High oil pressure

[pbeck]

I have a 89 cavalier with a 3400 in it and I haven't had any problems other than the oil pressure gauge!!! I t is constantly reading 80 psi and greater. The oil pressure sending unit is new, and this is driving me nuts. Any help would be great.



Thanks, Paul

[Superdave]

which sending unit did you use?

you need to use one for the original 2.8, it should be the longer one.. the short stubby ones are just for dummy lights.

[pbeck]

The one that was in my 2.8 was the wrong thread size. The one I am running is out of a 97 venture van.

[merlot566jka]

thats the prob, use the one for your car.

also check your fuel pump relay and fuel pump fuze, make sure there both working.

[IsaacHayes]

one (long one for gauge) from a beretta will fit, but not sure if it will work with you ECM. I'm guessing it should. I bet the Lumina one is a short dummy light sender.

[pbeck]

What year beretta do I need it from?

[Barry]

Yeah, thats your problem. I put a full cluster in my beretta, and my oil pressure guage is pegged...