I have a 1998 jeep cherokee classic. It was purchased about a month ago. Well the oil pressure gauge was showing 40 when engine started and after it got hot it would drop to 10 at idle. So we replaced the sending unit. Nothing happened. Then our mechanic replaced the oil sensor and now it is reading 40-45 while running and once hot at idle it sits at 18-20. Is this normal?

 

Yes that is normal your fine

 

I have a 95 Grand Cherokee with the V8 318. I did the same thing. Replaced oil pressure switch and oil gauge is still near 0 once Jeep heats up. Oil is full and there is not clicking in the motor. What is my next step? Is there an oil sensor on my Jeep too?

Thanks