weird grounding issue on gauges?

[sonicvalley]

ok, really weird readings on the oil pressure gauge and engine temp gauge. oil pressure gauge always reads really high and fluctuates wildly, especialy when i turn on a blinker or the cabin fan. same thing with the engine temp gauge only it actually takes a while to warm up and then it acts weird. is there a GEM module or computer somewhere that went bad? is there a grounding cable that needs to be fixed? what is going on...?




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94 2.3 2wd XLT Supercab

 

[sonicvalley]

any ideas anyone?

 

[SMTGREG]

The ground for the inst cluster is located behind the right kick panel. remove the bolt holding the wire ternimal and clean every thing with a wire brush or sand paper then reinstall. there may be more than one ground so clean them all. Then retest if it still happens remove the cluster and clean the connectors.