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Old 06-28-2013, 07:26 PM   #1
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Gauges Cut In And Out When Going Over Bumps

If I go over a bump, my gauges will drop to zero and quit working. Mainly my tachometer and speedometer. Most of the time, all the other gauges will continue to work. Also, the airbag light will come on and stay on until the gauges start working again. Usually when this happens, a light slap to the dash will fix it. However, there have been times when it doesn't. I'm sure there is just a loose wire or connection somewhere. But I'm afraid if I take the dash off, there is going to be a spiderweb of wires, and I have no clue where to start looking. I was hoping maybe someone could point me in the right direction and tell me specifically what wires to look for that may be causing this. If it matters, I have a 99 sahara

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Old 06-28-2013, 08:05 PM   #2
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The dash is very easy to take apart and little to no wires. Remove the cluster and unplug the 2 leads. Clean then and check the wires. Should just needed a good cleaning. Do a fourm search on his to remove dash it's real simple could of screws that's it

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Old 06-28-2013, 08:37 PM   #3
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Tweak the male tabs slightly for better contact on the back of the cluster. Dont forgrt dielectric grease.
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Old 06-28-2013, 11:25 PM   #4
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I had a similar issue in my 1999. I removed the cloister cleaned the terminals and greased them with dielectrical grease. Never had anymore problems.
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Old 06-29-2013, 07:05 AM   #5
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This is real simple. They are talking above about the connectors that run from the cluster to the Jeep wiring harness. Pull them apart and clean with a good electrical contact cleaner. You can find aerosol cans at Radio Shack. Then bend the contacts a tiny bit so that they will fit a little tighter. Dielectric grease as stated is the final thing to do. Should work perfect and handle any bump in the road after you finish. Very common problem.
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Old 06-29-2013, 08:42 AM   #6
Knows a couple things...

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Here's a link that might help do the above suggested fix... TJ Jeep Problem with Instrument Guages.

I fixed my '97 TJ's instrument cluster in a similar manner a few years after buying it new & no more problems after that.
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Old 08-02-2013, 08:51 PM   #7
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Thank you for all this, I have the same issue in my 99 jeep. Will do this in the morning. Until then, I've downloaded a speedometer app lol. Thanks.

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