'91 Sable Check Engine Light

courtesy of Bob, The Auto Answer Man

Hi Bob,
We own a 91 Sable wagon, 3.8, 6 cyl. Within the last couple of months, the check engine light has come on more and more frequently. We took it to our mechanic who put in on a diagnostic machine. It couldn't find a reason. He said the next step would be to check the fuel injectors. Do you know what could be causing the problem. It appears to do it more when the car is pushed, even just a little. It goes out, sometimes right away, sometimes in a couple minutes. Any suggestions?

The fuel injectors will not directly turn on the check engine light. There is NO feedback from them to the computer. Now, unless they were allowing too much or too little fuel, that would set a rich or a lean condition that would be stored in the computer. Whenever a check engine light comes on, it sets a trouble code in the computer. Now, if there are no codes present or the codes are conflicting, then I would suspect that the computer is going bad.
Good Luck!
Drive Safely!
Bob, The Auto Answer Man

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