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  1. XJ Cherokee Technical Forum
    So I've got a 01 xj 4.0 battery light comes on after I hit the gas an it will only act up when shifting as if it was gonna die but it doesn't once I get pass my gears runs great I tested battery an alt unhooked the battery an did a full load an all that runs fine checked every connection I could...
  2. XJ Cherokee Technical Forum
    So we bought a 1995 Jeep XJ and it was running fine for about a week, then it died and we were told to replace the battery. Battery replaced and ran for the day, then we broke down and battery was dead, was told to replace alternator, alternator ordered and replaced and ran for two days, now it...
  3. WK2 Grand Cherokee Forum
    Hi, guys. I'm posting this because I need your help. I did deep research on the forum but couldn't find anything similar. I've had my 2014 Jeep Grand Cherokee Limited V6 2WD since new, and it now has 96k miles (156k km). So far, it has been the best SUV I've had. However, the nightmare began...
  4. WJ Grand Cherokee Forum
    Hey all! I recently got my first jeep 🙌🏾😁 it’s in…rough shape, which is fine, it was pretty cheap. It’s a 2004 GC Laredo, V8 I’ll be the first to admit I know very little about cars, and I was hoping there was someone here who could let me know what’s going on. Yesterday , I start the vehicle...
  5. YJ Wrangler Technical Forum
    Hi all, I have a 95 Wrangler YJ 2.5L manual transmission that is having an intermittent low voltage problem. About 85% of the time when I start it, my voltage gauge reads around 11.8. This matches the reading I get on the battery when it is running. Sometimes the voltage will go back up to...
  6. KJ Liberty Forum
    Please help. I got a 2003 Jeep Liberty Renegade about 2 months ago. I had it checked out by a mechanic - got 3 control arms replaced and they said it was showing codes for a bad fuel pump, but the work could wait. I also had a failed belt tensioner, so I got it replaced along with the...
  7. WK Grand Cherokee & XK Commander Forum
    Hey guys. 07 CRD that isn't charging, and it may be an ecm/pcm issue. Has anyone swapped in a 2 pin alternator with an external voltage regulator? If so, what Alt did you order, or can I rebuild my oem alt with proper components? Any guidance would be appreciated TIA CD
  8. JK Wrangler Technical Forum
    So I just wired up all the stock speakers and 2 boat speakers on the roll bar of my 2013 2 door Moab wrangler. i have the amp running to the battery with a remote wire that turns on/off the amp with the Jeep. However, I think it’s taking to much power away from the Jeep because it died in my...
  9. KK Liberty Forum
    Hi all, My 2012 KK is not charging. I think I need a new PCM, and I'm curious if I'm missing anything before I go buy a new one. The day I first got a low battery signal I replaced the battery, original was 10yrs old so it was time anyway. After I put a new battery in, the alternator got REALY...
  10. KK Liberty Forum
    Alternator and battery are brand new. Through process of elimination, I believe I have narrowed it down to the alternator is not receiving the control signal. I need to test the continuity of the 2 wires that connect to the alternator but I don’t have the wiring diagrams to figure out which PCM...
  11. YJ Wrangler Technical Forum
    95 YJ 2.5 auto trans, getting code 41 (alt field) and 46 (battery overcharging). Am getting 20V DC and 60V AC at the battery when its running. Just repaired ECM capacitors and delay start is fixed. Couldn't visually see any damage wires from ECM to alt. Put a brand new alternator in, problem...
  12. WK Grand Cherokee & XK Commander Forum
    Greetings fellow Jeep people! 2008 WK Jeep Grand Cherokee - 3.0L Diesel, 205k miles Last week the alternator went out (probably from oil weeping out of the oil fill cap). I replaced the alternator, which is a decent project in itself, and everything was great until a day later when the battery...
  13. Audio, CB/GMRS/Ham Radios, GPS, & Electrical
    Good afternoon Everyone, My name is Rick, i just bought my first 1992 XJ 2WD 4.0 My ALT PWR 2 FUSE under the hood is blown i just want to know what's the function of this fuse, if its my main issue or should i look for something else that could be causing fail alternator symptoms on my...
  14. TJ Wrangler Technical Forum
    HELP! I have on 05 TJ with the 4.0L and an AT. Completely stock. No mods. The battery was replaced in January and the alternator a few days ago. The check gages light came. Changing the alternator didn't help. I watched the guy at Advanced Auto test the new one - fine. Alternator output...
  15. ZJ Grand Cherokee Forum
    I have a '95 Grand Cherokee that has over the years been providing lower and lower voltage. After checking all the grounds (and replacing the alternator), I decided the charging circuit in the PCM is failing so I bought an external VR. This brings the charging voltage way up (it's hanging around...
  16. XJ Cherokee Technical Forum
    (Yes! I've searched the forum for an answer to this mystifying issue!) My 91 XJ started with an issue about 2 weeks ago of only running for 10 min or so then shutting off and refusing to start. Had already replaced crank sensor, o2 sensor, map sensor, throttle position sensor, manifold temp...
  17. TJ Wrangler Technical Forum
    I recently had to replace the alternator on my 2003 TJ 4.0. The OE Denso alternator had a crack in the casting and I needed to replace it on the side of the road, apparently a fairly common problem. I decided to see what upgrades would fit without any modification (bottom of page). First, I...
  18. YJ Wrangler Technical Forum
    90 YJ 4.2 bypassed computer installed MSD distributor years ago, Then last year she needed a new alternator and yep I probably picked the one with most amp out. So the charge is going to the ignition module and apparently that is what is burning ignition module since i have replace it over 6...
  19. WK Grand Cherokee & XK Commander Forum
    First time forum poster, looking for some help on my 08 WK Jeep with 160k. I recently moved to a more rural area in the Pacific Northwest USA and I'm having a bear of time finding a competent mechanic for this Jeep. This despite the fact that it sure seems like I live in the area with the...
  20. Engines & Drivetrain
    I have a 2008 Jeep Grand Cherokee Diesel Engine with 300000kms. Recently I had the alternator replaced by a mechanic. He placed a new alternator and we also installed a new battery. After a few days of driving with no problems, the battery light came on. I sent the car to the mechanic but...
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