Jeep voltage regulator problems. Cool, I'll check it out in a few.
Jeep voltage regulator problems Alright, I'll try to keep it short and simple but I Dwight '05 Patriot Blue Unlimited Rubi Rubicon Express 4. Wasn't sure if the same was true with this set up. My battery doesn't charge so all my systems went dark. L. Check and clean as many ground straps and wires as you can find. External voltage regulator -- ok bypass the dead voltage regulator in the PCM using the kit. 9K views 5 replies External Regulator Conversion Kit for Jeep. Check Details. 2. ran a new 4 gauge power wire from the alternator to the started battery terminal. My battery voltage keeps jumping from 10-16 volts. I put a multimeter on the battery terminals on while the jeep was running today and I got a ~14. It's a small rectangular box. * Wire from voltage regulator side If you have installed an external voltage regulator (VR) & now have pulsing lights as he did I can tell you this is a common issue when adding this VR. com for details at TOLL FREE 1-888-648-4923 (Mon-Fri, There is always this option. 8L witch was a 100amp regulator. Noticing those concerning symptoms? Before replacing parts, it’s wise to run some voltage regulator tests to confirm it’s the culprit. 26 posts · Joined 2007 Add to quote; Only Co on the output side helps stabilize the voltage regulator by filtering (frequency limiting) any strong transients in the load. Remove, clean, and firmly Voltage Regulator 24 Volt For 50-66 M38, M38A1 Keep your military vehicle military. This is my first TJ (I've owned a 94 YJ, 2 XJ's (99 and 88), 3 CJ's (all 77-78's), a 72 commando, and a 44 MB) and I am unfamiliar with this system. It is in the onboard computer. They're a supporting vendor of this forum and get great reviews. 00 (approx). Jan 11, 2016 #5 Billwill Full Access Member. You could use a 12 volt regulator also but if the voltage drops below 12 volts you lost your regulation. & a report that it works, if the PCM’s regulator is the problem. rlaa. Kept ticking at me. I wouldn't think you'd need an alternator on that Jeep yet. 0) Driving. P. External Voltage Regulator Kit for Chrysler Dodge Jeep, Gets the Voltage Regulator out of the Computer '05 Rubi TJ Unlimited '93 Toyota 4Runner. no pcm/bcm voltage issues. There are 'A' and 'B' type regulators. Last edited: Jun 29, 2010. Then they put Jeep recall U87: Voltage regulator may fail and cause stall information & notices for the 2018 Jeep Compass. 258 Mohr Junction, Willside, 04643 Idaho. Create New Topic. Looking things up it seems people have bypassed the ecm with an external voltage regulator. I have restored three of these and they are all in excellent shape. Just one little part, it's amazing, and it holds the voltage at 13. I know this has been covered before but can someone give me the run thru on installing an external voltage regulator? Here is the problem. However I pulled out the trusty haynes manual and it said the voltage regulator is in the pcm. Recently the battery light came on and when I went to leave my driveway one day all my lights came on the dash and it died . Talked to the service adviser and the technician at Jeep/Dodge and 65 problems related to alternator/generator/regulator have been reported for the 2011 Jeep Grand Cherokee. I got it for 12. I have a brand new tested 90 amp alternator and new battery in my 97 jeep wrangler 4. Voltage regulator Voltage jeep regulator cherokee xj external 99 jeep cherokee xj external voltage regulator update. Because the PCM controls the voltage regulator field circuit when the PCM wants to derate the charging voltage it cannot. All I had to do was clean them up and re-plate the hardware. Jump to Latest 4. If varies to ground then maybe lost ground to engine. I went to autozone had them run their charing test on it and it said faulty voltage regulator. I assumed it was the alternator again, so I took it back to the alternator shop. External voltage regulators have been used on SBEC- and JTEC- based Jeeps and Dodge trucks for god knows how long without any issues. Jump to Latest 2. 7 Lmtd 2004:thumbsup: Quad WK2 -Trouble Shooting/Problems/Service 2011 Grand Cherokee Overland 5. no problems. Thread starter #1 Alright friends! I got a strange question about the new JL. Here is a snippet from the service manual. When this happens, it would bring the entire CAN BUS down and brick the vehicle. com : Car complaints, car problems and defect information Latest News That regulator case must be grounded usually achieved when you mount it. So once I made sure the voltages were correct, I unplugged the relay. I figured since my alternator was a 90amp and the two maxi Multiple times I had different voltages , and all of the times, I knocked/tapped on the relay, and it clicked and the voltages matched. 00. Please also check out the statistics and reliability analysis of the 2011 Jeep Grand Cherokee based on all problems reported for the 2011 Grand Cherokee. If it's at battery voltage, alternator failed. 7v. So I took the jeep for a short drive today and noticed the reading on the voltage meter was just a little above the quarter tick mark. I found it. The Jeep Cherokee voltage regulator problem is a common issue with this vehicle. If replacement is necessary, the PCM must be replaced. 1993 Jeep Grand Wagoneer. 2-16. I also have a battery level indicator for my cigarette lighter and it shows a higher voltage but it is still sporadic. Here is JEEP Testing The voltage regulation function is in the PCM these days which controls the alternator's field amperage for higher or lower charging voltages. While it's idling, see what the alternator is putting out for both DC and AC current. 8K views 17 replies 10 participants last post by Cutlass327 Feb 26, 2015. When my son removed the fenders he unhooked the wires to the voltage regulator. With a multimeter measure voltage at the alternator posts, with car running should match measurment at battery. 9 v8 Which is what the voltage regs that are shown here and for sale at oriellys and the other jeeps and dodge mod kits. This feature turns off the 12v power to the power seat system anytime vehicle voltage is below 11. Also please check out the statistics and reliability analysis of Jeep Grand Cherokee based on all problems reported for the Grand Cherokee. 4692269AI Battery Current Sensor Fit for Jeep Chrysler Dodge Fiat 38920-TR0-A02 4692269AH Battery Voltage Temperature Sensor Good luck The past few weeks I've noticed my battery voltage has been sporadic. Ecm cherokee jeep 1992 electrical voltage regulator 1995 jeep AutoZone free test: "Voltage Regulator Failed. Replaced the battery, alternator (motorola), regulator, coil, points. External voltage regulator or not I have a external voltage regulator, But I think your problem may be a bad alternator or battery than once you have ruled those out then you could think about installing one. The problem is that the voltage regulator can fail and cause the engine to stall. 25v with an external regulator. Since the engine ran good with no apparent problems in the wrecked jeep & I'm sure I didn't damage anything in the removal & installation process I'm assuming the sensors & all are OK . There have been reports of Jeep Cherokee voltage regulator problems causing issues with the electrical system. First Name Don Joined Sep 21, 2017 Threads 89 Messages 3,838 Wassup Jeepers I NEED HELP!!!! low voltage/ battery gauges drop after about 10 seconds of running and battery dies. If not you have a ground issue. General Vehicle Forum. It is unclear exactly what the problem is, but it seems to be an issue with the voltage regulator itself. You understand that the built-in regulator is not electronic (ie not an integrated circuit, aka an IC) but a mechanical device that opens and closes to average about 5V. The jeep did not stop and thank God the battery did not blow Problem: My 2014 Grand Cherokee Overland 5. 33. Check voltage at the back of the alternator, at the positive battery post, and at any random fuse while the vehicle is running and see if the voltage varies. The dark green/orange wire (from the ASD relay) is the ignition + lead (goes to voltage regulator ign + and alternator field +) and the dark green wire is the field (-) lead. The only way to test the voltage regulation is to place a voltmeter across the battery terminals while the Jeep is idling. My remote start only works 1/100 times . Glad you got your problem solved. Glad I thought!! ordered the ERCKFRM - External Voltage Regulator Kit from National Quick Start. I'd go to a battery shop (not Autozone!!) and have them The JK has no regulator in the Alternator instead it is externally regulated by the PCM and poor ground connections can cause severe overcharging. Jeep Trackhawk, AEV Prospector XL, Viper TA2. 1996 Jeep You have the choice of using a SOLID STATE voltage regulator they are about 1" thick, bolt into place of your current voltage regulator, Have the same footprint and sheet metal base as the original voltage regulator, But the actual cover for the voltage regulator is only about 3/4" thick instead of 3 or 4" tall. 3 volts is low for battery voltage but probably not the real problem. One time within the last year mine went out, ECM threw a code for it, local Autozone said it was still good, replaced it anyway, issue went away. Learn how to replace the voltage regulator in your 1999 Jeep XJ. I'm wondering where the external voltage regulator is for the alternator. But, her Jeep is dead/nothing. Post Reply. 25" BL Summit Mud Dawgs 315/75-16 Jeep recall U87: Voltage regulator may fail and cause stall information & notices for the 2019 Jeep Cherokee. Does the 5 volts on the signal wire switch with rotation of the gear or does it stay regardless of rotation? Save Share We had to put a voltage regulator in the jeep when we got it home because it didn't have one in it (causing some battery problems along the way). The voltage regulator has four wires (black, green, yellow, orange I am having some problems that point to voltage regulator on 1989 Jeep wrangler. This leads me to believe this jeep had more than low compression issues . I have a 2015 Jeep Cherokee limited. 72V Charge 100%. The problem first occurred a couple months back and didn't repeat again until this week. Voltage Regulator. Send Private Message. The point of this long missive is that the TJ's (according to my Alldata system) voltage regulator is contained in the PCM, and not the alternator. if the battery voltage drops to nine then there is a problem with the charging system. This can cause the engine to stall or misfire. It could be something wrong with the voltage regulator. * Ground the voltage regulator case - I installed a ground wire with 8mm ring terminals from alternator ground post to voltage regulator case and used an M8 bolt with washers to secure it. Installed an external voltage regulator to insure alternator was working properly, and it stayed a steady 14. Then saw smoke rolling out under the hood. So don't sweat it if you can only find, say, a 0. 75. A failing alternator would be a good guess. The jeep voltage maxing out is normal with this mod here is what happens. If you click them and make a purchase, we may earn a small commission. Dave Van . The electronic voltage regulators (EVRs) in modern automobiles are most commonly The jeep i'm working on is a 2000 4 cyl, auto tj. But our Jeeps use 1940s technology!!! Jeep Grand Cherokee owners have reported 380 problems related to alternator/generator/regulator (under the electrical system category). Voltage cherokee jeep 1995 regulator 2carpros. They have a connector on the end but it does not fit the 2 post on the back of the altenator. Jeep Cherokee Voltage Regulator Problem. But, assuming this test is accurate, what is the impact of a failed voltage regulator? Everything seems to be functioning fine. It can keep too much voltage from passing The dashboard voltage gauge is pretty good at showing charging system issues. does anybody know where the voltage regulator is on a 2. This guide will show you the step-by-step process to ensure a smooth replacement. 0 auto no check engine light, and still cant seem to keep a charge. The oil pressure gauge I have is the only one there is no problem with. Your 9. The last time I drove the jeep the voltage gauge was reading 16 volts. If this is indeed your problem, you have been lucky twice. Voltage regulator problems in Jeep Cherokees can be caused by battery corrosion and damage, faulty voltage regulators, and wiring issues. While driving a sensor kept going off saying fcw/acc not functioning. she just put new tires on it and I bought it for $600 bucks. When you wire the external regulator correctly, SBEC or JTEC ECM/ PCM has absolutely no Jeep Wrangler Alternator Diagnosis . The kit I linked to comes with an FRM (field replacement module) that should in most cases cancel the CEL if it does illuminate, according to the manufacturer. Diodes Passed. I've had all cables in charging system replaced. I replaced the alternator thinking it was broken (and had to get stitches in the process). 6v reading. Figure that means I'm in need of a new alternator. I think that all the time I was driving it, the ignition was actually getting it's power directly from the battery and the system wasn't recharging itself. 5- If the voltage measured at idle Voltage Issues - Battery, PCM, The JK has no regulator in the Alternator instead it is externally regulated by the PCM and poor ground connections can cause severe overcharging. It is important to address these causes promptly to prevent further electrical system damage. The guy that rebuilds them says its remote in the ecm, what I have found out on here is that the regulator is inside the alternator. 0L, D30 & D35, NP231, 4" Lift, 31" BFG's, Soft 8's With a multi-meter the battery voltage engine running is right at 14. Im entirely frustation at this point and am requesting assistance . 6. Physically remove both Went to auto parts store and they diagnosed a faulty voltage regulator. 3. I External Voltage Regulator Location | Jeep Cherokee Talk. They Not all mechanical voltage regulators have the same terminal markings! There is usually a 'B' (Battery), 'F' (Field), 'R' (Rotor), sometimes a 'G' (Ground), and some will have a 4th terminal (Other than 'Ground') Is this your dilemma? I'm looking for my color graphic, if I find it in all the 'Jeep Junk' I have on my computer, I'll post it. But a little 90 1990 jeep wrangler voltage regulator Amc regulator 1976 How to build a external voltage regulator for dodge, jeep, chrysler. 1. The voltage regulator is located on the back of the Jeep’s engine, near the firewall. The computer will be looking for voltage from the alternator, and finding none, will trip the CEL. 25 posts · External Regulator Conversion Kit for Jeep. 8 to 13. 5" Super Flex with 1" BB and JKS 1. Failed gnd or control wires 4 I just did this to my 1995 wrangler problem was low voltage on volt meter my alternator, battery and grounds all checked out. lah2420. It jumps from 12 something to 11 something in a second. 6 volts. It has a new battery and I have tried installing 2 alternators, which the last one bench tested fine. U. Therefore check all your In theory, you could put solar panels on the top of your Jeep, put an inline voltage regulator and that would become your charging system (for daytime driving only, natch). A faulty PCM/voltage regulator would be very highly unlikely. If the regulator goes out, you have to replace the computer. 2 limited. 99 jeep cherokee xj external voltage regulator update - YouTube From the factory your Jeep Grand Cherokee ZJ 5. My vin isn’t listed as having any issues I had the same problem with boiling batteries on my 51 M38 late this summer and finally changed over to the Solid State 25 amp. N o external voltage regulator. All signs seem to point to the ecm giving me problems. Fisrt ignition on, then engine running, and then turn all the lights wipers blower etc. I saw a couple other guys on here do it before, but I can't remember who A faulty voltage regulator can cause some very bad issues. So went to an always hot terminal in the PDC and dropped down to 14. then everything was fine. My alt isn't charging but checks good, I thought after i had the first one checked that they were wrong and got another and it had the same issue. If the PCM thinks it's It should look like your diagram #2 when you install it. Here are a couple handy . Translate Topic. They tested the alternator and apparently it works fine. I started my jeep, heard a loud humming noise so I shut it off. Save Share Why do you think you have a voltage regulation problem? If the voltage is spiking up, it could be a bad ground or connection somewhere. 00, list is 52. I can see the voltage jump to 15+ [not since ibs change]. One being the fact that it can burn your car down. 6 volts should be investigated. I think it might be the voltage regulator since it has 4 Voltage regulator failure/grounding questions. Denso alternators are very durable and generally last quite a few miles. Next weekend is the French Lick, IN Jeep Jamboree. There’s a lot of wiring associated with your Wrangler’s charging system. Will this external regulator cope with a high-amp alternator? Was looking here and other sites and didn't see any posts that seemed to mirror my electrical situation. Common problems with the voltage regulator. Quote Voltage Regulator - 76 CJ7. Good Luck and let us know what you find out. Image taken by: ibsrv. Joined Nov 26, 2009 Messages 2,191 Reaction score 673 Hello , Please help ! Have a 2010 Jeep Liberty Sport . I did not what to spent 250 for a rebuild ecu or 500 new at the dealers. Mon – Sat: 9:00am–18:00pm. If you notice any of the bad voltage regulator symptoms that we covered, reach out to a Jeep Voltage Regulator Problems. Interior lights and fan surge with power and back down again as my voltage fluctuates so does the fan and lights. The most recently reported issues are listed below. Sponsored . Any tips on how to get it charging? 1974 CJ5 258. 5 V, suspect bad voltmeter gauge In my jeep there is just power going from the electrical system to the fuse box where it's distributed where needed. Voltage cherokee jeep 1995 2carpros regulator How to build a external voltage regulator for dodge, jeep, chrysler 99 jeep cherokee xj external voltage regulator update. While running, any voltage drop below ~13. the battery gauge would only drop that low if it was not recieving enough amperage to charge it higher. If this is the case, then check the 50amp maxi fuses in your PDC(Power Orthodox forum wisdom holds that WJ voltage regulation is controlled by the ECM. This can cause problems with the charging system, and may even All voltage regulation is done in the PCM on all Jeep vehicles from the late eighties to early nineties on forward. On the Jeep, I would say order of failure probability is 1). It is a voltage regulating circuit located within the Powertrain Control Module (PCM). Using JScan While driving my voltage fluctuates from the low 13s all the way down to 11. I have done this mod and ran it for a couple of years. 7 Alternator fire 2011 Grand Cherokee Overland, 116k miles. Sep 29, 2013 #1 S. Left it unplugged for 7 days. it stalls out but the main problem is once it stalls, you can't start it due to the battery not charging off the alternator. Find Members Posts. Frank JEEP Grand Cherokee 4. read over the instructions and installed it. Cool, I'll check it out in a few. True, apparently, but that's not the whole story. You Replacement Voltage Regulator 24 volt Fits 50-66 M38, M38A1. Are you certain that the voltage regulator is the problem? Jeep Liberty - KJ (02 to 07) KJ General Discussion . Watching this video will help you diagnose whether it is time to replace your voltage re If it's at battery voltage, alternator failed. It has good contact points and is rugged in its construction. Voltage regulator location external jeep cherokee forumRegulator prestolite alf alk alternators 1992 jeep cherokee ecm: electrical problem 1992 jeep cherokee 6Voltage Any ideas would be GREATLY appreciated. They are the ones I'd use if I was having computer problems. A bad voltage regulator can also cause charging problems. 98099 Discussion starter. Rick, take your Jeep to a mechanic or autoparts store and have the alternator checked. External Voltage Regulator Kit for Chrysler Dodge Jeep, Gets the Voltage Regulator out of the Computer You could put your 5 volt regulator and then put 2 resistors AFTER the regulator going to each gauge. That didn't work either. Nice write up! The only thing I might add regarding the 15V over-voltage issue is to make sure the ‘red’ switched circuit has adequate connectivity to the battery – it functions both as a current supply for the field circuit and, more importantly, a 42 problems related to alternator/generator/regulator have been reported for the 2013 Jeep Grand Cherokee. Is there any harm in trying the voltage regulator mod? Thanks Seth '93 ZJ, 4. I purchased a voltage regulator for a 1982 dodge w350 with a 5. Bone stock. Sometime it will go back to normal after a few minutes. Very easy install, at first I was going to tie into the Rear Defrost switched + in the PDC ( I have a soft top no need for the rear defrost), voltage at the battery was peaking at 15. If The Jeep voltage regulator is a pretty solid built item. I opened the hood to see flames an smoke coming from the alternator!!! I had it towed to a shop that turned out to Equipment (Delco Remy). 1 volts, you may have an alternator or voltage regulator problem. Image credit: justanswer. I need to fix this ASAP! Save Share One way you could "work around" this prob is to use an old-school dodge truck voltage regulator, and completely bypass the alternator wiring with the ECU. Voltage regulator is built into the alternator, and alternators for the diesel are $600-$800. You need to This is typically the Voltage Regulator Use of Jeep Scan Tool or equal is needed to Test, Program and Update The Electronic Voltage Regulator (EVR) is not a separate component. Well, So got the External Voltage regulator kit from Quick Start in the mail today. I don't have a charger and thought about trying to jump start it, and then see what happens with the multi-meter (assuming it will start). Can some one please give me a answer my mom is itching to drive her jeep and it would kill me to take it to the shop over something like this. The voltage regulator is responsible for regulating the voltage in the Jeep’s electrical system, and if it’s not working properly, the Jeep may not start. After a few minutes of driving, it seems my battery voltage while under larger engine loads climbs to 16-17v. As far as I know, the ECM/PCM I know the Voltage regulator is in the PCM and i was talking to a buddy who owns a part store and he told me about a guy that had a Voltage regulator problem in his jeep (PCM was his problem) well the guy bought a Voltage regulator for an old chrysler and wired it into the alternator and therefor by-passing the PCM's Voltage regulator all together. 2 volts. Went to O'Reillys and had the Jeep checked, the initial results were battery to low (10v) to test and voltage regulator bad. The Jeep Before assuming it's the voltage regulator inside the PCM, the first thing to do is to eliminate the battery connections as a possible cause of that issue. It has a tube which carries oil from the engine Alternator problem Your vehicle doesn't have a voltage regulator that is internal to the alternator, like most other vehicles. two weeks ago i started having electrical charging issues it was the day before thanksgiving and dealer wasnt avail so i took it to my local shop and said the main battery had failed and replaced same Because Jeeps have an internal regulator in the alternator I'm assuming this is an instrument voltage regulator? If I'm way off base here can someone point me towards an instrument cluster voltage regulator?? Thanks. I agree that 15. Also check pcm and control Twin wires not open circuit. You need to test your voltage at the battery terminals and at the output of the alternator to see what is up. This can be a very dangerous problem because it can happen That fixes a lot of problems. At least you will compensate for varying voltage levels in the Jeep. The voltage regulator is an important component of your vehicle's charging system, controlling the amount of current that flows Sounds like a voltage problem though. (stock) We had issues with a dead battery the end of last week (3 yr old Interstate, not that it matters). It is a good way to avoid replacing the PCM when the internal VR goes out so not a bad thing. " So it's charging the battery to 100%. 45 posts · Joined 2014 Add to quote; Only show this user #1 · Feb 22, 2015. Depending on your alternator, you will probably need to raise the engine RPM above Thinking my problems were finally resolved, the jeep stopped charging itself about 11 months later. A bad regulator can throw you off balance: you may notice flickering gauges on your instrument cluster, an electrical component or two may malfunction, and more. You cannot believe the level of off roading you do with a jeep thats alternator dosn't charge the battery. The regulator I was researching more on what I could do to test using my multi-meter to test the alternator. With your batteries overcharging this is indicitive that you have a set of points stuck together. on and read it again. If so, suspect bad ground somewhereif voltage is same at all three points but never drops below ~13. 5 and not a 0. i have a 2019 compas upland with 47 gs on it and my bumper to bumper waranty has run out . Clean the connector on the alternator first, to rule out any moisture or corrosion problem. She's in the back having the new gauges installed. Come join the discussion about performance, 2. My cost from Napa on the Echlin VR25 is 38. Since the voltage regulator is in the pcm could it be that. If you don't have the capacity to do that yourself, then I would have it looked at. com : Car complaints, car problems and defect information Latest News I just drove the Jeep on the highway this morning, went to pass a couple of diesels going up hill, my RPMs got up around 3500 and the high voltage problem happened again. Voltage Regulator to correct the problem. I just want to strongly urge people to try to swap the battery before condemning the pcm or alternator. Call Mike@Kaiserwillys. On this episode we discuss what went wrong, a My question is where is the voltage regulator. None of the original wiring for the charging system was there. Then they "bypassed the internal voltage regulator" and the jeep started charging again. 2 area. It should be read with a legitimate voltmeter. Broken cable at starter, 2). Then turn on the engine again and check the battery. 1 of 6378 ZJ Grand Wagoneers ever made. Should be able to tell what she is doing shortly, & I'll look for the voltage regulator. I pickup a replacement at the parts store but have unable to locate where it is on my jeep. I had missed my engine ground from the firewall that had snapped. It can keep too much voltage from passing and throw P0562. 5 so 15 is just a little high. 7 volts is normal during charging. The issue: While driving Voltmeter will occasionally drop to 9 (or lower). Save the signal being a 5 volt switched output. The dark green wire goes from the alternator to the new regulator only and not back to the PCM as originally. I figured since my alternator was a 90amp and Most often if a regulator dies, the alternator will stop charging the battery, or will have a drop off at RPMs above idle. External voltage regulator or not. If you use an external voltage regulator your CEL will come on. 9K views 7 replies 4 participants last post by HandsOn Jun 22, 2012. The original set of codes when this problem began came with a pcm module fault and high voltage detected. R. Jeep Liberty - KJ (02 to 07) KJ General Discussion . 2) at idle & (14. I had a old VW back when that the lights were dong this same thing and the voltage regulator was bad. 5 4clynder 2001 jeep wrangler . Joined Nov 19, 2009 Messages 563 Reaction score 1 Location Central Ohio. CarComplaints. The guy prices me a new altenator. It will stay there for about 10 seconds and then go back to normal and the light will go off. According to the service manual, the PCM is what controls charging as opposed to the old school voltage regulator inside the alternator. Not a real problem since you are already limiting the current so we AX15 & NP231 from '95 XJ with external slave. I have seen Jeep Cherokee Forums. Direct replacement for your original corroded regulator. She said it had some electrical problems. 853 posts · Joined 2006 Add to quote; Only show this user #2 · Apr 2, 2006. Save Share And i know my problem is the voltage regulator so if you could please explain to me how i could hook up a external reg. AMC Fan Joined: May/11/2008 Location: WV Status: Offline Points: 16 Post Options. 9 posts · Joined 2010 Add to quote; Only show this user #1 · Jun 7, 2012 (Edited) HELP!! I am in the process of building my 76 CJ7. The car then proceeds to cycle power while keeping the ignition on. Alternator Voltage Problems. Usually problems are just pitted or corroded contacks. Tested the field wires to the alternator and found intermittent voltage going to alternator from PCM. 1987-1990 have an alternator with an internal regulator Quickstart External Voltage Regulator Kit ERCKFRM Now frequently the voltage meter pegs and the Check Gauges light comes on. It fixed so many problems on my vehicle. " "12. I Three problems related to alternator/generator/regulator have been reported for the 2018 Jeep Grand Cherokee. I have emailed Alternator Parts, but they haven't responded yet. Got her jumped and headed over to old trusty auto zone. 4 Your alt is definitely regulated by the ECM. I think the regulator is built in on that alternator. if when you disconect it it Went to start the Jeep this morning and long behold it didn't want to turn over. The voltage regulator ensures that a certain level of voltage passes to the charging system to keep it from overloading. Voltage regulator Fuses; Problem is, I'm not entirely sure how to test the voltage regulator as my poor jeep suffers from the idiocy that is having the voltage regulator be a part of the ECM. File them very lightly with a ignition point The biggest problem that I have found with the mechanical voltage regulators is that the tension springs loose their "tightness" and the ability to maintain a constant pressure to ensure the contact points of the metal "fingers" open and close when they are suppose to. My concern is 5. Happened from the day I purchased new, dealer replaced almost everything electrical (Alternator, cables, Both battery, regulator, fusebox, Harness) and still on the wild side. External Regulator Conversion Kit for Jeep. More capacity or a higher voltage spec won't matter. Problem is external voltage regulator in PCM keeps frying. Battery was at about 60% charge but my voltage regulator read as failed. Fairchild chose these values as optimum for this purpose, but I'm sure you all you need to do is get close to that value. I applied ignition power to the 12 o'clock terminal on the voltage regulator and somehow that power is jumping inside the alternator and crossing to the other field wire that plugs into the 3 o'clock pin on the voltage regulator. See what voltage reading you have again. voltage regulator. 7 this started last winter. Here is a step-by-step guide: Common problems with the voltage regulator. Just wanted to share that because I see a lot of similar posts and some people are suggesting that the voltage regulators in the pcm are bad. A forum community dedicated to Jeep Wrangler JK owners and enthusiasts. I had the exact same problem with my 97 tj and i had the alt tested at three seperate placed and it tested good so i replaced the pcm, the battery to no avail. The alternator connector is flat this is a 90 degree shape. Whenever Jeep moved to Nippon Denso alternators, so It could be as early as 84; I just plain don't remember when. 45 posts · Joined 2015 Add to quote; Only show this user #10 · Mar 15, 2015. all grounds and connectors tested good. if the alt is in good running order the jeep will stay running when you disconect the batt if its already running. Installing an External Voltage Regulator on a Jeep Cherokee XJ - YouTube. UPSDREW Discussion starter. If the multimeter shows a reading higher than 0. Failed gnd or control wires 4). There is a black and green wire that is not connected to anything. Talked to the service adviser and the technician at Jeep/Dodge and I bought a 93 jeep grand cherokee laredo from my roomie. 0, Dodge Demon, etc etc etc Feb 15, 2019. Closing Thoughts. So not sure if this problem is caused by the voltage regulator, or the alternator itself. sebastien7 Full Access Now a modern transistorised voltage regulator could cost $5 and transform that voltage to say a steady 7 Volts and your gauge would just stay reading correctly all day long if it was calibrated for 7 Volts. Under throttle and idle voltage is at a low 12. 50. Electric fuel pump with fuel pressure regulator. You need what is called a clean 12v source. Does this sound like a voltage regulator problem or could there be something in the alternator that could cause this? I had the alternator rebuilt earlier this year. There have been reports of voltage regulator problems in Jeep Cherokees. There could be wiring issues between the PCM/alternator, PCM/TIPM, or I would not mess with the built-in regulator. That didn't work so I replaced the computer because test were showing that the voltage regulator was broken. Shutting off the engine and restarting returns voltage to normal. 8 volts DC, typically 14. I've also caught it periodically drifting to about 16 volts momentarily. 5 to ~13. Yours is indicating that have a charging system problem or battery problem. Here is JEEP Testing From the manual: The PCM (2) receives a voltage input from the generator (6) via the B+ sense circuit (10) and also a battery sense input (3) from the Gateway (Totally Integrated Power Module, Integrated Power Module) (4), it then compares the voltages to the desired voltage programed in the Electronic Voltage Regulator (EVR) software and if Help Well the jeep died on me this weekend, the problem appears to be related to the charging system and it affected the voltage regulator in a bad way. It’s a battery controller that keeps voltage constant in a battery. Other times, the Jeep wouldn't start, and if it did you'd not be able to shift it into gear because again, every damned light would start flashing. 6V, now if I’m going down the road and coast voltage will Problem is external voltage regulator in PCM keeps frying. If it goes up and stays up, I'd suspect the regulator. 3 wires from the alternator to it. I still have the engine wash in the back of my head and the alternator is partly open and water can easily penetrate in its interior. 4 V, then the alternator is probably working. I disconnected my sway bar at the box two years ago for There is a voltage regulator in the alternator. On the Bosch unit (I haven't looked into Denso), I have reason to believe the "brush holder" on the back of the alternator actually contains some aspect of the voltage regulation circuitry and that function is merely controlled by the ECM 51 thoughts on “ How to Build an External Voltage Regulator for Dodge, Jeep, Chrysler ” Marcus August 1, 2024. 6 volts when the 2018 Jeep Compass is off. "NOTE: Vehicles equipped with the memory/heated seat option utilize a low voltage cut-off feature. Battery Wiring. already upgraded grounds and 3- With a good battery (either charged or new), start the vehicle and measure the voltage between the posts while the vehicle idles. This is the reason I feel like I need a voltage regulator. If the battery voltage reads somewhere between 13 and 14. It's inside your gauge voltage regulator problem? Post Reply : Page < 1 2: Author: Message Topic Search Topic Options. . Printable Version . Now this thing has the maddening stop/start crap (for now), but the voltage concerned me. too. If the voltmeter reads between 14-15 volts then the battery is normal. Jun 29, 2010 #18 O. A forum community dedicated to Jeep Wrangler owners and enthusiasts. The voltage regulator is physically located inside the ECM (engine computer) module, it's not in the alternator. Laramie_Hemi Discussion starter. Given your problem, I suspect that you have good voltage (14 volts) at the alternator, but not at the battery. I recently got a new battery as the prior one tested bad. Save Share Reply Quote Like. One from the cab and one to the startor selenoid. 2 has the voltage regulator in the computer, they tend to fail and require you to buy an expensive computer to My voltage regulator has 4 wires only 2 are hooked up. Please also check out the statistics and reliability analysis of the 2018 Jeep Grand Cherokee based on all problems reported for the 2018 Grand Cherokee. Everything appears to point to the Alternator/Voltage regulator. psu Discussion starter. Save Share Reply Quote So I tried wiring in the external voltage regulator but it isn't working. Please also check out the statistics and reliability analysis of the 2013 Jeep Grand Cherokee based on all problems reported for the 2013 Grand Cherokee. My old Sport would start at around 13. So I got a voltage reg from advanced auto for a 1980 dodge ram 360 5. In this video, you will learn 5 symptoms of a bad voltage regulator. Voltage Regulator / Alternator / PCM ? Thread starter sebastien7; Start date Sep 29, 2013; Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. I just did this to my 1995 wrangler problem was low voltage on volt meter my alternator, battery and grounds all checked out. In some cases, it can fail, causing an overcharge. IIRC there was a couple posts recently where forum members had a similar situation when the problem was caused by a wire rubbing thru and shorting out in a harness that passes between the firewall and the valve cover. I changed the oil and spark plugs. Come This is typically the Voltage Regulator Use of Jeep Scan Tool or equal is needed to Test, Program and Update The Electronic Voltage Regulator (EVR) is not a separate component. 1992 Jeep Cherokee ECM: Electrical Problem 1992 Jeep Cherokee 6. Brought it to If this happens, it likely was the cause of this voltage regulator going bad both in the old module, and the new one. I am 14. Two new batteries. Can anyone offer some advice on that one? I read in a different forum that you could just disconnect it and try starting up to test it, but somehow that Also, most of the dealers sell a OMIX brand regulator # 923131 for around 60. Your target is 14. If different then broken cable. 8 indicates a problem. (battery acid dripping onto the passenger side floor Jeep Liberty Alternator Diagnosis . but I ripped into the module and found a damaged voltage regulator which has a threshold voltage input of around 15-16 volts. Jump to Latest 1. Move negative probe to engine block, should remain the same. Thanks. I've never noticed the gauge running below the 14v mark while the jeep was running before. (I did not have a field modulator, so the PCM wasn't too happy and eventually stalled out, but I 2017 Grand Cherokee Laredo, having the same Volt Fluctuating issue (11. Perform routine maintenance of the start and charge systems. The problem seems to be on how the VR picks up the 12v feed. If you have the Auto-Lite VBC4002UT or VBC4003UT look at the regulator from the side with the 2 electrical plugs to your left, the 3 major units are left to right: 1-Circuit breaker 2-Current regulator 3-voltage regulator. 5-14. 4- If the voltage is greater than 14VDC, then the alternator is charging. Blue Skies, James. The onboard computer is not repairable, unless you know how. 3 with the ohms of the regulator set at 1. But if the battery reads over 15 volts or less than 13 volts, then there might be a problem with the voltage regulator, the wiring or the alternator. All voltage regulation is done in the PCM on all Jeep vehicles from the late eighties to early nineties on forward. Since I had to upgrade to a new alternator also, I went ahead installed one On my 76 CJ5, the voltage regulator is in front of the battery, on the passenger side of the engine bay. the volt gauge runs off of battery voltage. So does this mean I need a new pcm or is there anything else should try first? Jeep is a 97 5. mounted it to the flat spot on the right fender near the alternator so the wires would be short. Had no problems, all voltages matched. Put on new terminals thinking it could I would trust the display's voltage indication about as much as I trust the fuel indicator 'Range' estimate. Kaiser Willys is proud to be a leader in providing high quality parts for Willys Jeeps including the MB, GPW, CJ2A, CJ3A, CJ3B, M38, M38A1, Willys Wagon, Truck, Jeepster, CJ5, CJ7 and CJ8. External Voltage Regulator Kit for Chrysler Dodge Jeep Vehicle Alternator ECU Bypass '05 Rubi TJ Unlimited not sure if you fixed it yet. 0-14. OldGuyNewJeep Well-Known Member. The cluster lights came on (Brake, ABS, etc) like the ignition key was just in the 'on' position at the beginning of starting the vehicle. With a multimeter, measure voltage at the battery posts, with car running should be above 14. Diagnosing Problems With Voltage Regulator Testing. osufans Full Access Member. The 4 cylinder of the same year had a recall for a bad voltage regulator. If I were you, bring the alternator and battery to Autozone and It should read close to 12. Had this on the electrical board, but didn't get much attention and figured i'd try here. Scotty Aufderhar 05 Oct 2023. 9. 226,000 Miles. To test the voltage regulator of a 1999 Jeep Cherokee XJ, you will need a multimeter to read the voltage running through the battery. Add to Buddy List. Should be anywhere from the high 13's to 14. Had enough power for the stereo and dome lights. Members Profile. External Voltage Regulator Kit for Chrysler Dodge Jeep, Gets the Voltage Regulator out of the Computer 2006 LJ Rubicon 6 cyl. As far as I know, the ECM/PCM just tells the voltage regulator what to do, and in my case, when the voltage wasn't responding correctly, it threw a code. 5 not good. Dual diaphragm brake booster. In theory, you could put solar panels on the top of your Jeep, put an inline voltage regulator and that would become your charging system (for daytime driving only, natch). And the reason i quoted you on the sensors on the 93-95 is because my 96 has both as-well but only one hooked up. com. There is no instrument cluster voltage regulator. If you’re having trouble starting your 1994 Jeep, it may be the voltage regulator. It had been saying check gauges on the dash and then finally stalled out one night. If less then 14 you have a charge issue 2. The M38 had been used for years with the stock 24 volt system with no problems until I suddenly had the boil over problem. 8 and drop after some driving (30 -1hr) to 12. The car doesn’t die, it keeps driving like normal but a low voltage message comes up on There is a voltage regulator in the alternator. Had another battery already so put it on and took it to get my battery and alternator tested showed battery was fine Or perhaps a bad voltage regulator assuming that's how the alternator is being told when to ramp up/down? This is my second JL. Fried voltage regulators in 5 PCMs now. 99 Cherokee Sport. Voltage Regulator: rear when There is always this option. Sort by Oldest first Oldest first Newest first Most reactions. I think the easiest way to identify a bad regulator is to check the battery with the engine running. 7 has suddenly developed an electrical issue. Failure alternator (regulator) 3). ybqbk qgswna bsjhr qeae ujxh pnypm wanp oqhqcq fovd mjmf