No oil pressure until truck gets up to temperature


Asked by Mar 28, 2014 at 11:09 AM about the 2001 Dodge Ram 1500 2 Dr ST Standard Cab LB

Question type: Maintenance & Repair

So i have an 01 dodge ram 1500 5.2L. I recently changed out my plenum (easier than I expected). After a couple of weeks, now when I first start my truck I have no oil pressure for about 30 seconds then it comes up to almost 40psi. If I try to step on the gas before my truck gets to normal operating temp, my oil pressure guage drops down to 0 again. I'm confused if I need to replace sending unit, oil pump, screen, or what.

2 Answers


Basically I'm having the exact opposite of what everyone is describing. When my temp gets up to normal, oil pressure is fine, but when its cold, no pressure.. BTW I live in florida.


So I replaced the sending unit and same results. I even reset the computer by removing the neg battery wire, turning key to start position for 30 seconds, then reattach the battery.

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