Just curious on if the oil and gas pressure should spike when you give it gas. I have a 4.0 jeep grand Cherokee My oil stays steady at 40 to on the dash no mater where your at on the rpm range. I also tested my fuel and it was around 45, give it gas and it didn't spike. Just want to know if that normal . I have an old Chevy truck with a 350 and when you give it gas the oil pressure rises. Just didnt know if the jeep stays around the same pressure.

 

What year? 96 and newer have a returnless fuel system and the pressure will not spike.

 

the factory oil pressure gauge is not as sensitive as a mechanical one, or even some other electric ones. i have a mechanical oil pressure gauge and a factory one, the difference is funny actually. i have a 94 chev for a shop truck also, so i know what you mean as far as oil pressure there! fuel pressure should move a little higher when there is no vacuum (ie: wide open throttle) on a return system.

 

That's what I thought. It's a 97.