2001 Jeep Cherokee oil pressure

HEAD2004

MEMBER
2001 JEEP CHEROKEE
6 CYL
2WD
AUTOMATIC
90,000 MILES

My jeep will hold at 40psi oil pressure until I stop and let it idle then it will fall to less than 20psi, and sometimes I have take it out of gear and accelerate to get the oil pressure back up to 40psi. This is all according to the gauge. I have replaced the oil pressure sender. Also is there a saftey device to shut the engine off when the oil pressuse get to low on this model jeep.

3 Replies

RASMATAZ

MECHANIC
75,992 POSTS

Check the oil pressure with a mechanical gauge at idle and 2K rpms then comeback with the readings-

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Friday, July 25th, 2008 AT 12:47 PM

HEAD2004

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Friday, July 25th, 2008 AT 2:03 PM

GREGDAWSON

MEMBER
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I have a 2001, 160,000 miles, hooked up a mechnical gauge where I removed sending unit and I register very low PSI at idle, but when you get to 2,000 rpm it jumps to 25 psi, at 3,000 rpm it jumps to over 30 psi. I was told it was fine to drop low at idle, but it should be over 8 psi at 2,000 rpm. Your sending unit could be bad, I suggest putting a mechnicial unit in place of the sending unt to see what the pressure is. Even a working electrial unit will not rapidly react and report pressure.

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Saturday, July 26th, 2008 AT 8:59 PM