Join Date: Aug 2001
Location: metro Detroit area Michigan
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Bad Oil Pressure
Hey all! Do I need a new oil pump on my 97 TJ with 4.0 liter I-6? At 3000 rpm or higher I get about 40 psi oil pressure, at 1500 rpm I get about 20 psi, and at idle I only get about 12 psi. If I do need a new oil pump, how hard is it to do? Can you get to it from inside the oil pan? Do you have to raise the engine to get the oil pan off? And yes, I have checked the oil level, it's full. Or is there any chance that the oil pressure sending unit could be bad, sending a low reading? Anyone ever here of anyone having that problem? Any tips or help would be greatly appreciated!
"It's a Jeep thing... and I DO understand"