I've just gotten a 95 YJ 2.5L and the oil pressure gauge pegs out after start up. At a very slow idle, it reads less than pegged out. Do I need most likely, a new sending unit or a new gauge? Many thanks for your help.
My bet is clean the contacts on the circuit board behind the gauge and it will be fixed. I changed the sending unit on my 91 but mine would register low around 10 highway and 0 at hot idle. Try cleaning the contacts first as its free then if needed get the sending unit ( I paid $20 at autozone for mine)
Thanks for the replys. I did take out the cluster and cleaned and tightened the contact screws but after installation, it was doing the same thing. I'll pick up a new sending unit and put it in. Many thanks.