Question about 2002 Jeep Liberty

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Oil pressure drops when I drive over 1500 RPM

My oil pressure light recently came on so I changed the oil and filter. That didnt solve the problem so we changed the oil pressure sensor. That didnt work either. We changed the oil again and found we found a jello like substance in the oil filer. There are no metal shards in the oil. Please HELP!

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Hi:
you dont specify details of your car, make and year, got ECM or not, if yes hook up a scanner in the port and check for active codes. if you dont have a scanner you can do this.

1.- remove oil pressure sensor and install a mechanical gauge 0-120 psi long enough so you can check from the driver seat.

2.- Start engine and check the oil pressure. the pressure must be between 35- to 70 psi with oil cold, when it gets hot pressure drops from 25 - 50 psi at idle. At 2500 rpms the pressure goes a litltle higher.
if pressure drops less than that values you got problem with your engine, then its time to get an experienced mechanic.

Hope it helps
DH

Posted on Dec 15, 2008

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Have them check the oil sending unit

Posted on Dec 15, 2008

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