Misfire after i changed spark plugs, checked all my coils, and cleaned throttle body?

Asked by Mar 22, 2016 at 08:21 AM about the 2004 Chevrolet Colorado 4 Dr Z85 Extended Cab SB

Question type: Maintenance & Repair

I put brand new spark plugs and checked all my coils. I also had my throttle
body cleaned and still yet it is misfiring. Could it be the mass air flow sensor or
an o2 sensor?

1 Answer

72,235

May be a bad spark plug wire, or low compression in a cylinder. There should be a code stored in the computer that would indicate what cylinder it is. Have the code read at like Auto Zone.

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