2002 Buick LeSabre Q&A
2002 Buick LeSabre Question: oil psi reads high with no other problems with car.
My 2002 Buick LaSabre's check engine light came on a few days ago. We had it put on diagnostic machine and it said our ignition control module was bad. Replaced it and it runs great but the oil gauge is reading 129 psi. Car is running fine though. Had it put on machine again cause the check engine light just came on again and it said catylitic coverter was bad. I am concerned about the oil psi being so high though. Any suggestions? Also, the oil psi was normal until the problem with the ignition control module went out. - Visitor
the 420 code is cat efficency. replace it to cure the light. the oil sender unit may be at fault. have someone do a sweep test on the dash unit to confirm. Roy - mastertech6371