Question about 1990 Oldsmobile Cutlass Ciera

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My 88 Oldsmobile Cutlass Ciera is running rich and

My 88 Oldsmobile Cutlass Ciera is running rich. It uses alot of gas. The service engine light comes on when started and then goes off after driving. Then comes back on after a few minutes of idling. There is also a rich running smell that is very strong which can be smelt when driving and after parking. This did not start happening until I changed the o2 sensor.Other than these problems it has plenty of power but starts harder than it should.The car has 72,000 orignal miles on it also. Any suggestions would be appricated.

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The Oxygen sensor is very suspect. it is easy to damage on install, even with the correct tool.

Put the old one back in and test the car...

Posted on Jan 31, 2010

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My 1990 cutlass cierra is revving up and down when in park or idle or at a stop light and guzzling gas. My 99 dodge ram did this also and we replaced the oxygen sensor. is this the same problem as the cutlass?

Posted on Sep 06, 2010

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