New electrical gremlin

[Kingkat900]

So I just finished my triangulated rear 4 link. Now when I started the jeep to move it my gas gauge reads low witch its almost full. I also have the motobuilt fuel cell witch I installed a few months ago and has been fine.
Second is a service axle locker on dash. I have ud 60s with e lockers that have never gave me any trouble. I am lost on what the issue could be.

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[Kingkat900]

So I checked the f40 fuse and have power there for the lockers but no powe at the plug on the axles. Anybody have any ideas or had a similar problem????

 

[Beachcomber72]

Sounds like a bad ground feed. Or short to ground.

 

[Kingkat900]

Sounds like a bad ground feed. Or short to ground.

Wouldn't that cause the fuse to blow?

 

[Beachcomber72]

Wouldn't that cause the fuse to blow?

Generally but Not necessarily. But bad ground can lead to improper voltage reading which is what I first thought of based on the low gas gas gauge reading. I definitely could be way off base though. I’d just unplug and reconnect any taps or pigtails and make sure every pin and connections are seated properly.

 

[Kingkat900]

I will definitely try that. Just really strange when all I unplugged during the build was the rear locker plug and axle speed sensors.

 

[Beachcomber72]

Hmm not sure. Possibly the locker and fuel sensor share same ground to the pcm?

@mwilk012

 

[Kingkat900]

Hmm not sure. Possibly the locker and fuel sensor share same ground to the pcm?

@mwilk012

That makes sense, now the question is where that ground would be located.

 

[Beachcomber72]

That makes sense, now the question is where that ground would be located.

If that is the issue then it would most likely lie in one of the connections you disconnected or added if any.

 

[2019 JLUR]

When you did the lift install did you lower the axle enough to maybe pull to hard on these harnesses? Check both and make sure they were not tweaked.

 

[Kingkat900]

When you did the lift install did you lower the axle enough to maybe pull to hard on these harnesses? Check both and make sure they were not tweaked.

No one of the first thing I did was disconnect the locker plug.

 

[JLeco2022]

i would ring out all the wires to ground with a meter, my money is on a hardness

 

[mwilk012]

No power at the axle measured exactly how, on which pin from where to where? Do you have 10’+ of test leads?

There aren’t any ground wires to the locker harness. It’s direct connection to the drivetrain control module for every wire except the fused battery power.

 

[Kingkat900]

Problem solved!!!! Found a wire on passenger side that had been rubbing on metal and wore through the sheathing and grounded out. Thanks for the help.

 

[OldGuyNewJeep]

Problem solved!!!! Found a wire on passenger side that had been rubbing on metal and wore through the sheathing and grounded out. Thanks for the help.

Any chance you can post a picture or explain where the wire lives?

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