Low/No Oil Pressure
#16
Earl, as always, thanks for the memory trigger!!!
Read this!! https://www.jeepforum.com/forum/f19/...fixed-1304679/
Read this!! https://www.jeepforum.com/forum/f19/...fixed-1304679/
#17
::CF Moderator::
Joined: Aug 2011
Posts: 43,971
Likes: 1,566
From: Prescott, Az
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
#19
::CF Moderator::
Joined: Aug 2011
Posts: 43,971
Likes: 1,566
From: Prescott, Az
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
#20
Looks that way. Maybe try for next year,
https://www.cherokeeforum.com/f54/20...orders-247902/
Heading over to the neighbors and try and make it til midnight. You and yours have a Happy New Years.
https://www.cherokeeforum.com/f54/20...orders-247902/
Heading over to the neighbors and try and make it til midnight. You and yours have a Happy New Years.
Last edited by EZEARL; 12-31-2018 at 08:37 PM.
#21
Old fart with a wrench
Joined: Nov 2010
Posts: 14,398
Likes: 730
From: Manlius, east of Syracuse, NY
Year: 2000 XJ Sport & WJ Laredo
Model: Grand Cherokee (WJ)
Engine: 4.0L
That truck makes me drool, Cruiser!
I'm taking the XJ out tonight for newspapers. Wish me luck.
I'm taking the XJ out tonight for newspapers. Wish me luck.
#22
Moderator CF K9-unit
Joined: Apr 2012
Posts: 5,842
Likes: 9
From: Alaska
Year: 2000 sport
Model: Cherokee (XJ)
Engine: New 4.0l from s&j engines
#24
Old fart with a wrench
Joined: Nov 2010
Posts: 14,398
Likes: 730
From: Manlius, east of Syracuse, NY
Year: 2000 XJ Sport & WJ Laredo
Model: Grand Cherokee (WJ)
Engine: 4.0L
Didn't your mother always tell you to take your boots off before coming into the house? The least you could have done is brush it off!
#26
Old fart with a wrench
Joined: Nov 2010
Posts: 14,398
Likes: 730
From: Manlius, east of Syracuse, NY
Year: 2000 XJ Sport & WJ Laredo
Model: Grand Cherokee (WJ)
Engine: 4.0L
Yeah, I know my limits. When I needed the heater core changed in my WJ, I took it to my professional mechanic buddy. Half way thru the install, I took some cash up to him and was scared ****less when I saw it laying in pieces! After all that work, the only things wrong were a footwell light that was loose and the glovebox door that needed adjustment to close easily. No squeaks, rattles, or electrical problems. That guy's good! THEN he tells me that was the first WJ he'd ever done!
#27
UPDATE: No luck. Pulled the elbow off and cleaned everything. Put it all back together and refilled it with Rotella 15w40. Verified (again) with a mechanical guage and it's still dropping to nearly zero at warm idle. Oh well, it was worth a shot. At this point I'm just hoping it holds together until warmer weather when I can swap the engine.
#28
Old fart with a wrench
Joined: Nov 2010
Posts: 14,398
Likes: 730
From: Manlius, east of Syracuse, NY
Year: 2000 XJ Sport & WJ Laredo
Model: Grand Cherokee (WJ)
Engine: 4.0L
There's got to be a simple answer to this low oil pressure with XJs. WJs don't seem to lack oil pressure, at least not any that I've seen. Could it be something about the way the oil pump is mounted or driven? With the "clean block" in the WJ, the oil pump is mounted internal to the oil pan and the filter and pressure sensor are on the main oil gallery for the lifters and feeds everything else. I mean they are driven the same, but the oil delivery is all internal without the passages outside to the filter adapter then back inside. I don't remember any problems with my 97 ZJ either, but I only had that for a year.
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