2000 Ford Fairmont losing oil pressure when car warmed up

2000 FORD FAIRMONT
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MADENT
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Engine Performance problem
2000 Ford Fairmont 6 cyl Two Wheel Drive Automatic 274000 kilometres

Hello...
The car oil pressure gauge drops dramatically after the car has been driven for a while..
an example would be when stopping at traffic lights..
I have had the oil sender unit replaced and this has made no difference...
When the pressure drops, there are no noises or rattles to indicate a problem and the car actually runs perfectly...
when I strat the car to begin with, the oil pressure gauge takes a few seconds to go up and I could leave the car idling for an hour without a problem..
It only seems to be when the car has warmed up and driven..Also the car is not overheating at all..
As I said, it runs perfectly apart from this problem...

Thankyou
Feb 3, 2010 at 6:59 PM
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HMAC300
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this could be anything from an electrical problem to an actual engine problem. Best thing to do here is when it's warmed up and the oil pressure drops, get a mechanical gauge put on it and see if it is the same. It could be a bad gauge among other things. It could also be a bad oil filter......
Sep 15, 2010 at 5:53 PM
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