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CJ-7 electrical problems?This is a discussion on CJ-7 electrical problems? within the Chassis and Body forums, part of the CJ Forums category; I just got my 1983 CJ-7 home last night. It's been setting in a garage since it was repaintd 3 ...
CJ-7 electrical problems?
02-27-2009, 05:16 PM
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#1
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Jeeper
Vehicle(s): 1983 Jeep CJ-5, 1987 Wrangler YJ, 1974 J-10
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I just got my 1983 CJ-7 home last night. It's been setting in a garage since it was repaintd 3 years ago. It hasn't been started. When I got it, the fuel & water temp gauges didn't work. They were all the way down to the left. After a few miles of driving, I saw both gauges were pegged to the right. I stopped & the gas tank held $17.00, I pulled the pressure release lever up on the radiator cap & nothing came out. I removed the cap & the level was good. Any ideas?
Thanks,
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Re: CJ-7 electrical problems?
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02-27-2009, 05:22 PM
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#2
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72 CJ5 Owner
Vehicle(s): '72 CJ5, V8, T18, D20, D44, D30
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That's one big gas tank you have there! It took $17 and was full! 
OK, enough idle chat.
Sounds like a short in the gauge cluster. The individual gauges work by grounding (resistance). If the sending unit shows zero resistance(full short to ground), the gauge swings all the way to the right (full or hot position).
Since the gauges have completely separate sending units, about the only place that they could be picking up a short to ground is around the cluster. The wires entering the cluster are separate so they would both have to be shorted to ground to affect both gauges.
That is where I would start...
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Re: CJ-7 electrical problems?
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02-27-2009, 07:56 PM
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#3
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Full Time Jeeper
Vehicle(s): '74 CJ-5,
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according to this diagram there is very few areas that affect both guages.
I hilighted the parts you should check into. Hopefully it works..
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Re: CJ-7 electrical problems?
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02-27-2009, 08:01 PM
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#4
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72 CJ5 Owner
Vehicle(s): '72 CJ5, V8, T18, D20, D44, D30
Join Date: Jun 2008
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Thats great! You have a diagram. I only have a 72 diagram.
Did you scan that? I tried zooming in but it gets a little hard to read. Can you save it as a larger attachment?
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Re: CJ-7 electrical problems?
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02-27-2009, 08:46 PM
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#5
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Full Time Jeeper
Vehicle(s): '74 CJ-5,
360 AMC Engine.
Accel HEI module/ TFI Ignition.
Holley Truck Avenger carb.
T-150 3 speed trans.
Model 30 Front diff. Drum Brakes.
Dana 44 rear diff (Lincoln Locked).
4" SkyJacker SoftRide lift.
2" lift shackles.
Front shackle reversal.
TJ fender conversion in rear.
35x12.50x15 TSL Super Swamper tires.
Optima Red-Top Battery.
Full Roll Cage w/ 4 point harnesses.
Custom Seating.
8000 Lb. winch on custom front bumper.
Join Date: Dec 2008
Location: SE OK
Age: 43
Posts: 1,588
Thanks: 3
Thanked 23 Times in 22 Posts
Rep Power: 3
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actually I get all my diagrams from autozone.com (repair section).
I'll look it up again and post the link
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Re: CJ-7 electrical problems?
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02-27-2009, 08:47 PM
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#6
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Full Time Jeeper
Vehicle(s): '74 CJ-5,
360 AMC Engine.
Accel HEI module/ TFI Ignition.
Holley Truck Avenger carb.
T-150 3 speed trans.
Model 30 Front diff. Drum Brakes.
Dana 44 rear diff (Lincoln Locked).
4" SkyJacker SoftRide lift.
2" lift shackles.
Front shackle reversal.
TJ fender conversion in rear.
35x12.50x15 TSL Super Swamper tires.
Optima Red-Top Battery.
Full Roll Cage w/ 4 point harnesses.
Custom Seating.
8000 Lb. winch on custom front bumper.
Join Date: Dec 2008
Location: SE OK
Age: 43
Posts: 1,588
Thanks: 3
Thanked 23 Times in 22 Posts
Rep Power: 3
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Re: CJ-7 electrical problems?
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02-27-2009, 08:57 PM
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#7
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72 CJ5 Owner
Vehicle(s): '72 CJ5, V8, T18, D20, D44, D30
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That is great! Even my old eyes can read that! Thanks!
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Re: CJ-7 electrical problems?
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02-28-2009, 02:39 PM
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#8
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Re: CJ-7 electrical problems?
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03-03-2009, 05:04 PM
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#9
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Jeeper
Vehicle(s): 1983 Jeep CJ-5, 1987 Wrangler YJ, 1974 J-10
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Your old eyes huh? How about mine, after all I am "The ole fart". Now would ya'll please ell me what I'm looking for & possibly how to get the panel out? I tried gettin' behind the panel. Not in this life time.
Thanks  |
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Re: CJ-7 electrical problems?
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03-03-2009, 05:56 PM
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#10
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72 CJ5 Owner
Vehicle(s): '72 CJ5, V8, T18, D20, D44, D30
Join Date: Jun 2008
Location: SW GA
Posts: 5,614
Thanks: 50
Thanked 542 Times in 79 Posts
Rep Power: 10
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I'm going to have to let a later model CJ owner chime in here... My early CJ has a completely different cluster then yours...
__________________
Vote For Us Daily
PM's to me may not get answered for a while, I'll answer them though...
Blogs are for personal messages - not for questions best asked in the forums...
Thanks, --CJ
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