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Q:

intermitten check engine lite on 1997 Isuzu Trooper

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
Check engine light goes off and comes on and it seems to be related to when I put gas in the car. (Not always but too many times to be a coincident). Any ideas on how my putting gas in the car can affect the check engine light going on or off?
(1) Answer
The engine light alert you about a fault in the emission control system, the gas cap not closed properly could cause the Check Engine Light to go off. To better troubleshoot the problem I would recommend you to retrieve the diagnostic codes stored on your vehicle's computer.