Question about 2005 Cadillac STS 4.6

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Fix engine light

Check engine light came on i noticed that the engine fan was also running. I had added some injector cleaner to my gas could this have triggered it?

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Not likely.... But as you just put fuel injector in make sure your fuel cap is tight cause if its not the computer will detect a evaporation leak in the gas tank. So tighten the gas cap and drive the car for a few days & see if the engine light goes off .. If not get the computer scanner to see what's going on

Posted on Feb 09, 2012


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I have 2008 chevy Impala 3.5l v6 Vin K an I have tried everything to fix the vehicle the check engine light comes on dash says engine power is reduced an runs fairly rough

Hi Christopher.
Have you tuned up the engine? Changed spark plugs, wires, and air filter? Another possibility is you may have some water in your gas and/or partially plugged fuel injectors. Pick up a bottle of fuel system cleaner with water remover at your local parts store and pour it into your gas tank on your next fill-up. If there is water in your gas and/or partially plugged injectors, you should notice a difference in engine performance in about a day or so, depending on your driving habits. Hope this helps. Let me know.

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Fill up your gas tank and ad a bottle of Lucas gas treatment/lube to the tank, be sure it's the treatment in a little clear bottle and not injector cleaner. After you've added the gas and treatment drive the car, with the head, driving lights, radio, heater, etc. all turned off. It may take ten miles or more but the check engine should go off and car will run normal. NOTE: Never jump start your car or use it to jump someone else's without referring to your owners Manuel.

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When a solvent/cleaner product is added to your fuel tank, carbonaceous deposits (basically the dirt and gunk accumulated over years) are flushed through the fuel system. This can cause major problems if the contaminants manage to enter your fuel pump and make their way past the seals. This can and has damaged good fuel pumps. Downstream of the pump is the fuel filter - once deposits reach the fuel filter, they may block it and reduce fuel flow. The next major problem areas are the injectors themselves (rather sensitive to dirty fuel) and the engine.
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