Super High Oil Pressure

[Dwaxy]

92 tbi 350. When I start it cold the oils pressure is so high the guage can't read it. Once I drive the truck for a while and it's warmed up the oil pressure comes down to normal when idling. When I accelerate past say 2800 rpm my oil pressure begins to rise fast and eventually the gauge can't read it again until I let off the pedal. Help?

[barry G]

if there is an oil cooler..

there is two reliefs related. (I actually use one in my custom subaru - made for the gm trucks, like 5 bucks a piece)

 

there is also a ball relief external at the oil filter housing.

 

the worst case scenario is the oil pump relief itself. That would be a deeper operation to fix.

 

if you feel like experimenting, get a new cheap oil filter, and find a way to poke a whole in the filter part.

 

this will verify the outside relief problems...compared to internal.

 

 

there is so much reliefs bouncing around, I had a miracle with the billet filters and stainless mesh. A stable line of flow to let all the other stuff play nice.

 

Another thing these trucks do is make a dirty oil cooler through time. the gooper that decides to move is what takes the reliefs eventually.

All oil filter related as initial cause, more than heat and other subjects.

[Black02Silverado]

I'd try another gauge. Is the one you have electrical or mechanical? If electrical, put a mechanical in it's place and go from there.