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Old 04-05-2009, 12:32 PM
Thread Starter
Join Date: Feb 2009
Location: Connecticut
Posts: 167
Cool What's acceptable oil pressure in a 2000 4.0?

I had another thread here, my guage was fine then all of a sudden one day it dropped to zero and the CE light went on. You can read it here - https://www.wranglerforum.com/f5/oil-...ick-26936.html

I just put a mechancal guage on it, and these are the results

Cold on start up - 40lbs at idol

Driving around 1,700-1,800 rpm 50

Full warm

Idol - 8-900 lbs at 5-600 rpm

15lbs at 1,000 rpm

20lbs at 1,500 rpm

30lbs at 2,000 rpm

anyone who wants to chime in here, great. I hate the thought of changing the bearings, I also hate the thought of pulling the pan and changing just the pump only to find out that wasn't it. This is my DD, so I have to fix what has to be fixed, but not start ripping too much stuff apart.

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