Hello all. In working on fixing up my 91 S10 Blazer i've come across some issues from her sitting up for a couple months. Most recently, the oil pressure gauge is pegged at max, with key on and engine running or with key off. I disconnected the sensor and the gauge still is pegged at max. The truck has digital gagues, so I'm guessing my cluster is to blame? Any help is greatly appreciated, I wanna get her back on the road! Thanks!

 

is any other gauges acting up? or is it just the oil pressure?

 

Just the oil pressure gauge is acting up. All others work just fine.