2001 Jeep Cherokee V8 Four Wheel Drive Automatic 90000 miles
oil pressure drops to 0 when pressing accellerator when cold. Returns to 40 psi when returning to idle.
once engine warms, oil press stabalizes at 50 psi.
i use synthetic 10-30 oil and change filter at every oil change.
oil pressure sensor switch was defective and mechanic replaced it with an after market sensor, 2000 miles ago.
Saturday, December 5th, 2009 AT 10:17 PM