The oil pressure gauge (I know it really is an idiot light with a needle), appears to be stuck at the bottom until the engine warms a bit, then it "pops" to the proper position. Does this behavior indicate a bad sending unit?
My 2000 Explorer did the same thing. Took it to the dealer because the warranty was almost up. They said it was a bad sensor and replaced it.
Now our 2001 F-150 company truck is doing it. I'm not worried about it.
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