Question about 1991 Ford F150

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What causes the check engine light to come on then go off when you accelerate. 1991 F150 5.0 liter engine

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If the light was flashing when it came on, then it means your engine is misfiring.

A solid light can mean anything.

This light comes on when the computer detects a fault of some sort in its diagnostic tests. If it keeps detecting this issue, the light will remain off. If the light turns off, then it has detected that the issue may no longer be present.

In order to find out what the exact reason was for your light, You need to have your car computer scanned to retrieve the code that the computer would have stored when the light triggered. Most garages will do this free of charge. The code will tell you what may have caused the light to initially go

Posted on Sep 30, 2009

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Could be anything. Take it to advanced auto, or autozone, they can put a code scanner on it to find out why the light is coming on, (if there is one near you).

Posted on Sep 30, 2009

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