Question about 1988 Oldsmobile Cutlass Supreme

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It jerks and shakes like it is missing when a accelerate.

The altenator fried the old computer and we put a used one off of a 91 corsica on it and it ran fine for a few weeks... i was told it needs programmed so i took it to someone and they said its a self learning computer.. idk anyways it said the TPI was bad and EGR Failure.. what does the EGR do besides emissions? it wasnt starting very good before i changed the TPI now it starts fine but is kinda sluggish taking off im not sure if i need to adjust the TPI more or what.. its being a money bucket..

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  • chevymatt88 Jan 12, 2009

    someone told me it will spit out codes for all kinds of stuff untill it re calibrated.. i have a new o2 sensor so i can do that but the egr valve is 250 bucks.. unless i go to a junk yard.. then idk what it is.. thank you...

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Throttle position sensor 30.00 should fix it

Posted on Sep 01, 2011

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Change the egr valve and also change the o2 sensor.

Posted on Jan 12, 2009

  • Robert Weiss Jan 13, 2009

    you might check your firing order and stuff cause my 89 buick century was mis-firing on 2 cylinders and it would absolutly shake you out of the car. just un hook the egr valve and if it runs better with the egr valve unhooked then that is your problem. the only thing that the egr valve helps is fuel effeciency.

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