I have a 1995 Buick Le Sabre. The check engine light comes on. The scanner

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b123153h

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when it's scanned and the computer does not read then normally it could be the computer has failed, or the ground to the computer however it should go to limp in mode and not drive to bad, my guess is the map sensor or mass air flow sensor is defective. Also the battery connection to the computer could be bad.
 
did not work, what could it be? It runs fine when the check engine light does not come on, but it cuts off when it does. My personal mechanic used his own scanner to scan it but it did not read.
 
Try getting it scanned somewhere else. I have a similar situation with my Lumina where one shop gets nothing and another gets a laundry list of codes.
 
When you have the car scanned and the light is out did your friend check the history codes? There are two sets of codes to read, current & history. Current for when the light is on now when tested, History when the light came on, then when out. After you get the code you can go to sites like http://www.autoreairs.about.com/ or http://www.obd2-codes.com/trouble_codes? pretty much anything with the obd2 in it. I hope this helps, Good Luck. :^)
 
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