How can i know if my car computer is going bad?

  • Thread starter Thread starter Jessica H
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Jessica H

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My oil light came on then turned off for one then my check engine light came on. it turns on after a few minutes of driving but doesnt turn off unless the car is shut off. now my ac unit makes Alot of noise when i turn the ac on. could that be why my check engine lights on or could it be a problem with my computer in my car.. i took it to advance auto but they said my car was too old.
i have a 94 pontiac grand prix se 4 door
 
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