1992 Oldsmobile Achieva



March, 12, 2009 AT 2:43 PM

1992 Oldsmobile Achieva 4 cyl Front Wheel Drive Automatic 80000 miles

when this problem first started it idle at 60. Then it goes in the red zone after driving, so I put straight 40 w oil
Now my car idles 60 to 80
after 6 to 10 miles driving it is at 10 to 20

1 Answer



March, 12, 2009 AT 2:50 PM

Check the oi pressure with a oil pressure check guage. A good thing to compare it to is at least 10 pounds per 1000 rpms on the tach. Shouldnt be more then 20 pounds per 1000 rpms. It will be higher when the engine is heated as the clearences in the engine are tighter, when the engine heats up clearences will either get tighter or looser, causing the pressure to go down or up.

Please login or register to post a reply.

Vacuum Leak Test and Repair - All Cars
Clean Idle Air Control Ford Super Duty 5.4L