Question about Jeep Grand Cherokee

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I loose oil pressure but the motor doesnt makes any knockin noises what might it be.

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The low oil pressure is caused by a number of things including restricted oil flow, worn engine parts, thin oil viscosity, dirty filter. You can raise the pressure somewhat by using 50 weight (racing) oil. Drain the old oil and replace the filter with new. If that doesn't help, take the car to a service center for an estimate and diagnosis.

Posted on Mar 15, 2011

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You don`t say if your car has a gauge or a light on the dash and if this is why you say you lose oil pressure, either way if the oil level is full and it is not excessively dirty and there is no engine mechanical noises, then i would say that the sending unit will need to be replaced.you really should have the oil pressure tested both at cold and hot temperatures.you may have a little oil pressure but not enough to operate the sending unit,so you could be causing engine damage by lack of pressure but not so little that it causes noise.

Posted on Mar 15, 2011

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