04 Chevy trailblazer has a missing a motor what else could it be

Asked by Scott Apr 20, 2020 at 11:16 PM about the 2004 Chevrolet Trailblazer

Question type: Maintenance & Repair

I replace a camshaft sensor I have
replaced coil pack I put new plugs
in it and still missing

3 Answers

The only thing I think you could be is maybe fuel injectors

5,345

If no CEL codes are present, clean your throttle body first. If still present, probably your motor mounts. Hard to notice when in park, but noticeable when in in D while stopped at a stop light. Since they're hydraulic , hard to tell if they're bad by the eye unless they're leaking. Use AC Delco, as others off brands will crush prematurely, and you're back where you started.

120,695

There are lots of things that can cause a misfire, and it's best to have codes read as this could narrow it down to which system. You didn't check/replace the plug wires, and that could be the cause. Then there's anything that can cause a fuel imbalance, like a failing fuel pressure regulator or defective injectors. Then a compression problem.

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