Guage reads no oil pressure
#4
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Year: 2004
Model: Grand Cherokee
Engine: 2000 4.0
1st,confirm with mechanical gauge or replace sending unit. Mine does the same (verified 4psi with mechanical gauge). It used to annoy the heck out of me until I finally decided to quit worrying and just drive it. That was a year and many miles ago....the 4.0 is a strange motor.
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Year: 1987
Model: Cherokee
Engine: 4.0 HO
It just did it the other night. It was weird as all else. The exhaust sounded like the header was just unhooked from the block and then when it stopped my oil pressure guage read zero. The weirdest thing is it shows twenty to twenty five pounds until it warms up. Then it drops to zero.
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#8
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Year: 1993
Model: Cherokee
Engine: I6
#9
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Year: 1987
Model: Cherokee
Engine: 4.0 HO
It runs fine though. Which is why I'm thinking only the sending unit being fouled out. I haven't had a chance to look.
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