Suddenly the other day the oil pressure gauge goes weird. As soon as you turn the key on, the gauge reads at max and stays there. A few days later I had the cluster plates off and physically moved the needle to zero, then turned the key on and it kicks right over to max again! What's up???

The only thing I was doing with the car at the time I noticed this was running a jumper wire from the auto shifter switch to the ECM (the idle control wire). I was doing this because the car used to be a 5 speed, but I bought it without an engine and tranny and then swapped in an 5.7TPI and 700R4 that I had as well as the main engine harness and ECM. I wonder if there is a link here?

 

personally I dont trust the stock gauges and would look at getting a autometer one as its more reliable. Its just an opinion tho but if you wanna fix the stock one try a different gauge or cluster if you have access to one. That way you can eliminate the cluste its self

 

Weird, the gauge just started working again all by itself.