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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2003 Chevrolet Avalanche 1500 Question: Can fuel from certain gas stations cause a engine light to come on ?
i guess anything is possible. yes gas could be water down.try a higher octane fuel like 89 instead of 87 that might help
Answer #2BIGDOG9791 January 11, 2013, 18:31Rookie
yes and if you dont get a good seal on your gas cap it will do the same
Answer #3Franksbakery October 22, 2013, 22:00Rookie
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.