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1989 Chevrolet 3 4 Ton Pickups Base Fleetside 131.5

1989 Chevrolet 3 4 Ton Pickups
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December 24, 2010, 11:50 am

Allen L
 

Question: Grounding problem for instrument cluster


OK...quick background. The temp indicator kept saying it was overheating...I used a laser thermometor to determine for sure that it was not overheating and was exactly at 195...right where it should be. I replaced the temp sender in the side of the block. Looked over whatever wiring I could see..and still it acts the same.

Very random about whether or not it will indicate correctly or not.

Anyway..I talked to some guys that said they had a similar problem and they added ground or made sure they had really good ground on their instrument panel. I've seen a couple other gauges occassionally jump around like they are getting weird signals.

Any thoughts? Or ideas on how to proceed with makeing this better??


December 27, 2010, 8:33 pm

Tyler O
Expert Mechanic

I would try removing the cluster and cleaning all the connections with deoxidizing electrical contact cleaner. Adding grounds from the cluster harness grounds directly to chassis can't hurt either. It's worth a shot.


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