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1992 Lexus LS400 Question: check engine light due to gas cap being loose or worn,is what i was told.

 

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Visitor, 4.0L V8, Evansville, IN, May 02, 2011, 20:40

check engine light is on .had it diagnosted I was told the gas cap was causing problem,I changed cap and light is still on.

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  • Answer #1

    patrick mannion from Greg Solow's Engine Room, May 02, 2011, 21:14
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    It takes two "drive cycle trips" to "turn off" the light. The computer looks at certain criteria before it will naturally turn off the light, if not a scan tool is required to turn off the light.

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  • Answer #2

    Visitor, May 04, 2011, 21:32

    ventilation line restriction in gas line.

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