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2003 Chevrolet Avalanche 1500 Question: Can fuel from certain gas stations cause a engine light to come on ?

 

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boss24, Dunlevy, PA, May 01, 2012, 10:57
 Rookie

Replaced both kock sensors a one year ago. Now having a problem with engine light coming on (knock sensor low voltage input) when I fill up at certain gas stations. Light stays on until next fill up, then goes out after a few miles on the new tank of gas.

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  • Answer #1

    Greg's Orange Auto (14194 Answers) , Orange, CA - (714) 361-9386
    globalhelper May 01, 2012, 12:59
     Master

    i guess anything is possible. yes gas could be water down.try a higher octane fuel like 89 instead of 87 that might help

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  • Answer #2

    January 11, 2013, 15:31
     Rookie

    yes and if you dont get a good seal on your gas cap it will do the same

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  • Answer #3

    October 22, 2013, 19:00
     Rookie

    Yes, bought Cheap gas several times . After awhile smelled like sulfer, rotten eggs, light came on. Filled tank with high octane gas twice light went off. Did not use that gas again and had no problems.

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