1998 Dodge Ram 1500 sport 3.18 5.2L v8

Asked by Aug 09, 2016 at 12:14 PM about the 1998 Dodge Ram 1500

Question type: Maintenance & Repair

My trucks oil pressure sits real high when first starting.
After running a bit it comes back down to normal and
rides there for a bit unless I go above 2500 rpms then it
shoots almost all the way up. What could cause this?

1 Answer

77,875

Stuck oil pressure bypass valve. Before you tear it down to replace the oil pump make sure it is that, and not a gauge or sender messing up, Put a manual gauge on it temporally, that will give you an accurate reading both cold and hot. I have seen some senders do the same thing read way high until they warm up then tend to read right or just a little high, and a few gauges that just are not correct.

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