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00 XJ 4.0l - oil pressure too high?

D

dan42green

NAXJA Forum User
Location
Torrington, CT
Noticed while driving yesterday, the oil pressure just about maxes out the gauge (a little below 80psi), after it warms up it will settle down a little more at idle but start driving and it goes up.
 
Your oil pressure sending unit is bad. Just replaced one on a 99 doing the same thing.

Nick
 
Running a Fram filter?
 
hanaxj87 said:
Your oil pressure sending unit is bad. Just replaced one on a 99 doing the same thing.

Nick
Click to expand...

When I went out to run it a minute ago it did seem to fluctuate some and not in a normal manner. I think may be right.

Bosch filter I believe is on there or possibly mobil1.
 
Double check the head to firewall ground strap.
 
dan42green said:
Noticed while driving yesterday, the oil pressure just about maxes out the gauge (a little below 80psi), after it warms up it will settle down a little more at idle but start driving and it goes up.
Click to expand...

am I understanding correctly that it "almost maxes" the gauge at 80ps and only "drops a little" at idle? You've either got a bad sending unit or a shorted wire leading to the sending unit (through the gauge) as if the pressure were dropping due to a plugged filter, it wouldn't come up with engine speed.
 
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