Having problems with your 1991 Buick Park Avenue ?
Oil guage drops then goes to high range
\015 After driving for awhile my oil pressure guage goes haywire then settles back to normal center, now its pegged on high all the time.\015
Sounds like your sending unit needs to be replaced cheap fix and if your oil pump losses all its pressure you will begin to hear knocking coming from your motor from the top under the heads.
Repair Help & Product Troubleshooting for 1991 Buick Park Avenue
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