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Is 70 to 75 PSI oil pressure too high for a 1985 jeep Cherokee?


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Answered 2006-08-31 01:14:21

On a cold engine this may be normal, but on a hot engine this is possibly a sign of a problem. Too much oil pressure can create problems. The oil pressure sending unit may be bad and reading incorrectly. You may have a stuck relief valve in the oil pump. If the pressure valve fails to open, pressure can reach dangerously high levels and may rupture the oil filter or force out oil gallery plugs. Replace the pump or valve (if separate) to cure this condition. Other causes of excessive oil pressure can include a restriction or blockage in the main oil gallery, or a combination of tight bearing clearances, partially spun bearing, high rpm operation and using an oil viscosity that

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Answered 2006-08-31 01:14:21

On a cold engine this may be normal, but on a hot engine this is possibly a sign of a problem. Too much oil pressure can create problems. The oil pressure sending unit may be bad and reading incorrectly. You may have a stuck relief valve in the oil pump. If the pressure valve fails to open, pressure can reach dangerously high levels and may rupture the oil filter or force out oil gallery plugs. Replace the pump or valve (if separate) to cure this condition. Other causes of excessive oil pressure can include a restriction or blockage in the main oil gallery, or a combination of tight bearing clearances, partially spun bearing, high rpm operation and using an oil viscosity that’s too thick. Don't ignore this. Have it looked at by a pro who can check the pressure to see if it is indeed too high.

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