Engine miss fire - Car Troubleshooting


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Engine miss fire

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Skinnyox316
New User

Jan 11, 2014, 4:10 PM

Post #1 of 5 (1923 views)

Engine miss fire	Sign In

2005 chevy trailblazer 4.2 inline 6. Car is sputtering. Check engine light came on. A friend plug computer in and it said a miss fire. Cranked it back up and ran fine. A week later, started sputtering again. I changed spark plugs and still sputtering. Later on that evening, I cranked up and ran fine and check engine light went off. Ran good all week. Cranked up this afternoon and back to sputtering. Any ideas?

Discretesignals
Ultimate Carjunky / Moderator
Discretesignals profile image

Jan 11, 2014, 4:30 PM

Post #2 of 5 (1910 views)

Re: Engine miss fire	Sign In

What was the trouble code number?

Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.

Skinnyox316
New User

Jan 11, 2014, 4:34 PM

Post #3 of 5 (1907 views)

Re: Engine miss fire	Sign In

Don't know. We were out of town over Christmas and it was my fiancée neighbor who owns shop. About 7 ours away. We drove it back with out any trouble. All I know is that he said it was a miss fire. It's got 120,000 miles and never had plugs replaced.

Discretesignals
Ultimate Carjunky / Moderator
Discretesignals profile image

Jan 11, 2014, 4:43 PM

Post #4 of 5 (1902 views)

Re: Engine miss fire	Sign In

If it is a misfire and the computer picks up on it, it should set either a P0300 code or one of the other cylinder specific misfire codes (P0301-P0306). Would be important to know which trouble code number is popping up to help narrow down the problem if possible.

Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.

Skinnyox316
New User

Jan 11, 2014, 4:51 PM

Post #5 of 5 (1896 views)

Re: Engine miss fire	Sign In

Ok. I will be taking it up to O'reillys tomorrow. They will check it for free. I will repost as soon as I know. Thanks again...

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