Hi everyone o need some help with my gauges. My oil pressure gauge and fuel gauge max out and stay there with the truck on or off I can move the gauge back to the low point as soon as I give it power it just Max's out. Are the 2 gauges related like in the same wire? I tried a different cluster from another truck and it owes the same thing? Just trying to figure out if it's not grounding. If the fuel sending unit is bad will that cause it? Thanks

 

These are 2 different circuits and do not share the same signal wire. How do you move the gauge back to the low point? You probably have 2 bad sending units or bad wiring to the gauge cluster. Unplug the wire to the oil pressure sending unit and see if anything changes.

 

I just took the front cover off and moved them by hand. I have 2 different cluster and they both do the same thing. I have unplug oil pressure sensor and the fuel gauge and then still just max out