I have a 2000 Jeep Cherokee - Oil pressure problems
I replaced my oil pump 13,000 miles ago and now the gauge goes to 0 and the check engine light comes on when I pull up to a stop light. Then when I take off it goes back up to about 30 psi. Every once in a while it jumps up to about 60 psi and goes down to about 20psi at an idle. Then next time I drive it it goes back to the 30psi and 0. Does this mean a bad oil pump again or could it just be the gauge?