2004 GMC Envoy "high octane cause engine light" Questions

...high octane gas. A common cause for stalling at idle is a "throttlebody" plugged with carbon. A simple De-Carbon service that cleans the carbon from the throttle plate and the IAC valve will almost ...

high of octane cause the check engine light to come on? I just bought a 2001 VW Golf and when I filled it up I put 91 octane in it then the engine light came on. Ive tryed the gas cap but light didn't

...high octane -grade fuel) Also a bad gas cap seal or not tightening it properly after fueling can cause that. (Manufacterers recommend replacing the gas cap every 2-3 years) Whatever it is , it is ...

...a high grade fuel for a few tanks.... also an octane booster can help I had the same thing in a 96 Ford Ranger 2.3. It was the bolt in the lower belt pulley on the front of the motor. Hope this

...in it from 89-93 octane. try not to use high test gas. see what happens. sometime it can cause a ping in the engine and the knock sensor will pick it up and throw a code. let us know. try this ...

...high octane additive. Got approx (4 gal) of bad gas. Drove 1 mile to home. Prob started immediately on starting the next morning.Treated gas for moisture.Got high octane gas (10 gal), added fuel ...

...high octane fuel. Still pings. Please help. Remove and inspect the spark plugs for heavy deposits or glazed-looking interior insulators. Make sure the plugs are the proper type for this engine. Heavy ...

...high octane gas. The service engine light can easily be tripped by weak detonation in the combustion chamber, causing very poor performance as well. Good place to begin before you start dumping $$ ...

...high test for gas but it still happens Don't use any higher octane fuel than what the manufacturer recommends, that will cause problems with cold starts and other poss issues due to the diff of the ...

...high octane you can find. Check wire connections to knock sensor (most common cause for 'restricted performance light, sometimes outside temperature plays a part). Then disconnect negative terminal ...