Question about 1990 Buick LeSabre

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Where do you connect diagnostic computer in a 1990 buick lesabre custom?

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  • mj510 Apr 11, 2011

    it's jerking and when i'm going down the road the check engine light flashes

  • mj510 Apr 12, 2011

    Thank you so much for your help! I had the car checked yesterday and the said it was the "cam sensor" had an error,


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Under dash in the center at bottom. What is wrong with it.?????

Posted on Apr 08, 2011

  • honeymokey
    honeymokey Apr 11, 2011

    Find out what the code is and get back to me.. My guess it is the egr valve. On this car you can take the egr valve apart and clean the carbon build up under the solenoids. Also check for vacuum leaks at the three way tee at the end of the vac. hose coming from the cruise servo. I have one of these cars with over 305,000 miles on it.


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