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Author Topic: XJ Alternator Issue/Questions...  (Read 2408 times)

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Offline bRIBEGuy

  • Budget Lift
  • Posts: 292
XJ Alternator Issue/Questions...
« on: January 25, 2016, 11:58:20 AM »
So I'm driving home from Rocky Mountain House yesterday in the XJ, and around Olds my battery gauge drops from 14v down to to the bottom (9v) and sets off the "Check Gauges" light.  Crap.....dead alternator is my first thought.  Made it home, parked in the garage, and left it overnight.

Today I go out to take a look, and the Jeep starts up just fine.  Gauge is showing roughly 12v today, and no "Check Gauge" light anymore.

Pulled out the multimeter, and got 12.35v on the battery, but this drops to 11.95v if the engine is running.

Thoughts from the crowd?  I'm still thinking it's the alternator, but I wanted to toss it out there before I throw money at it.
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'00 XJ Classic, 3" OME lift, 32's, custom stereo.

Offline morerpmfred

  • Talks waaay too much!
  • Posts: 1604
Re: XJ Alternator Issue/Questions...
« Reply #1 on: January 25, 2016, 01:49:52 PM »
Mine yj did the same thing. Test it. Turn everything on. High beams. Rear defrost. Heat on high. Wipers. And check voltage. Should be no movement in gauge. Not a tech.
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Offline bRIBEGuy

  • Budget Lift
  • Posts: 292
Re: XJ Alternator Issue/Questions...
« Reply #2 on: January 25, 2016, 03:57:16 PM »
Fully charged the battery and it came up to 12.99v static.

Started the XJ: Voltage dropped to 12.35v

Turned on the highbeams & fogs: 12.05v

Turned on the stereo: 11.97v

Dead alternator?
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'00 XJ Classic, 3" OME lift, 32's, custom stereo.

Offline EEP

  • UberWheeler
  • Posts: 328
Re: XJ Alternator Issue/Questions...
« Reply #3 on: January 25, 2016, 06:22:06 PM »
Not dead but not long before it craps out. Mine did the same thing.
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01 XJ, RE 3.5" lift, Smittybilt XRC front & rear bumper, X2O 8,000 lb winch, 33" MT/R's
, ARB snorkel, lockers and a bunch of other stuff
06 TJ, 2" lift, 31" Goodyear Territory's.
14 JKU, wife's urban 4X4.

Offline hps4evr

  • Administrator
  • Talks waaay too much!
  • Posts: 2959
Re: XJ Alternator Issue/Questions...
« Reply #4 on: January 25, 2016, 06:33:44 PM »
Mine did this last summer... Alt and battery died by the time I got to calgary. It's a sign from the jeep gods, change the alternator.
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YJ=Y’all Jealous

Offline bRIBEGuy

  • Budget Lift
  • Posts: 292
Re: XJ Alternator Issue/Questions...
« Reply #5 on: January 25, 2016, 07:57:04 PM »
Thanks guys.  Sounds like my suspicions were correct.
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'00 XJ Classic, 3" OME lift, 32's, custom stereo.

Offline EEP

  • UberWheeler
  • Posts: 328
Re: XJ Alternator Issue/Questions...
« Reply #6 on: January 26, 2016, 08:30:30 PM »
You need a hand they can be a pita to change
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01 XJ, RE 3.5" lift, Smittybilt XRC front & rear bumper, X2O 8,000 lb winch, 33" MT/R's
, ARB snorkel, lockers and a bunch of other stuff
06 TJ, 2" lift, 31" Goodyear Territory's.
14 JKU, wife's urban 4X4.

Offline bRIBEGuy

  • Budget Lift
  • Posts: 292
Re: XJ Alternator Issue/Questions...
« Reply #7 on: January 27, 2016, 07:38:18 AM »
Quote from: EEP on January 26, 2016, 08:30:30 PM
You need a hand they can be a pita to change

Thanks for the offer, but I'm just gonna wimp out and drop it off with Eric & Dave this time around.  This week is pretty busy, and I don't know when I can get to it otherwise, and I'm hoping to be running for Sunday.
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'00 XJ Classic, 3" OME lift, 32's, custom stereo.

Offline bRIBEGuy

  • Budget Lift
  • Posts: 292
Re: XJ Alternator Issue/Questions...
« Reply #8 on: January 28, 2016, 08:15:12 AM »
New alternator is in, gauge is sitting back near 14v, and the world seems to be as right as it ever can be for a jeep again.

:)
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'00 XJ Classic, 3" OME lift, 32's, custom stereo.

Offline powerguys

  • Stocker
  • Posts: 12
  • 403-265-1010
    • Treasure Electric
Re: XJ Alternator Issue/Questions...
« Reply #9 on: February 04, 2016, 09:05:33 AM »
Hey if you guys need any New alternators,starters,winch motors or solenoids give me a call or parts to fix your unit in bRIBEGUY case a $25 dollar brush holder would have fix it.
Rich 403-265-1010
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Rich Cottam - Owner / operator
Treasure Electric - The PowerGuys
403-265-1010
alternators / starters / winch motors / inverters / solenoids / Interstate Battery dealer
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