Question about 2000 Jeep Grand Cherokee
When jeep is idle or going under 20 miles per hour gage goes from 40 psi to 0 psi
At idle, at operating temp is there any ticking from top end of engine? Are there any knocking noises brom bottom end?
If no noises, change oil and add some Marvel oil to clean out galleys. If that dosent work, change oil pressure sendingf unit. Also, if you have a mechanical oil pressure gauge, hook it up and take a direct reading. Oil pressure (in any vehicle) at idle should NEVER be less than 15psi. Generally in 4.0 jeep engines it's never less than 30, with a high reading at driving rpm of about 40-60! (but, you did not mention what engine you have)
Posted on Dec 28, 2008
The same problem but the costumer is telling me that he has changed the engine . I coll the tech that change the engine he cleen te pick up but did not change the seel and i got 10 psi on idel and 70 on the highway.
Posted on May 17, 2009
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Posted on Jan 02, 2017
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