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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I'm assuming you added fuel injector cleaner to your fuel tank rather than using a direct pressure cleaner through your fuel injectors.
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