I have a 2005 Nissan xterra oil gauge thats at High all the time
the oil and maint. has been well kept
could this be a sensor , pressure sender sensor
can this be driven for a long period of time without fixing
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Re: oil pressure needle at H
Sounds like an oil pressure sening unit un plug it whilf its running and see if the gauge goes too zero,if not then the prob is the gauge, the sending unit is only about 15.00 at auto zone and easy too put in
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First thing is find out if the oi pressure is really high. Remove the oil pressure sending unit and hook up a oil pressure test gauge kit, if the pressure is within normal then replace the sending unit first. (requires a special socket)
Well it could be a bad oil pump or a bad Oil Sending Unit. If you have an oil pressure gauge you can pull the sending unit and stick the pressure gauge in there and see what the reading is. I would thing 60PSI would be suitable.
I believe this Oil Sending Unit is on the front (possibly the back) of the oil pan.
Just remove the connector and put a wrench (or a deep socket) and twist it out and replace with a new one.
Make sure the oil filter is snug and not leaking as well.
Check your oil level too and make sure it is properly filled.
inner timing cover oil gallery gaskets are more than likely your problem...you can make your own for 10 dollars or give nissan 500 for a new cover as they dont supply the gaskets....check the oil pan for gasket material...thats a sure sign they blew out but they may be gone and still holding together so its not always accurate...