Miss fire codes

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01-26-2011, 07:25 AM

#41

fasterbbc

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Quote:

Originally Posted by Gas Man

WOW... didn't know you were that far up.

yeah Buddy. I did my time where you are at. LOL I am from the area so good to be home. By the way the 18" low profile

in the snow and ice. so becarefull. If they fix the problem I will be adding the Brembo brake kit (or it will be forsale) and getting a set of snowies for next year.

01-26-2011, 07:27 AM

#42

fasterbbc

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Quote:

Originally Posted by camaro98z28

Sorry i didnt read the missfire on cold start? Fuel injectors, coil, crank sensor and so on. I want to bet its a sensor issue. Timing not adjusting properly. New cars are so sensitive to any deviation.

It shouldn't be a sensor sense it only effects the #3 cylinder. But the new motor will knock out the cylinder as the issue.

01-26-2011, 09:37 AM

#43

ChevyMgr

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Have they ever run a compression test when the engine was cold?

01-31-2011, 06:42 PM

#44

fasterbbc

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engine update

Dealer called today the new motor is in. So I swung by at 5pm. New motor is in the cradle and ready to go back into the car waiting for a seal. cool.

BUT, I checked out the turbo sense it was out, curious to see how much soot was in it. First thing I noticed is on the 3 bolt flange opening the cast divider has a 2 inch long crack right down the center. Mechanic wasn't so I couldn't ask him directly but the service writer didn't think they were replacing that. I sure can't see why they wouldn't. I will be calling back tomorrow to make sure. I can't imagine that causing a #3 missfire but this is at least the 3rd time it has been out and I can't believe they haven't replaced it just to make sure. and if no other reason to avoid a future issue.

any thoughts???

01-31-2011, 06:49 PM

#45

fasterbbc

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Quote:

Originally Posted by ChevyMgr

Have they ever run a compression test when the engine was cold?

yes it was with spec, leak down was less than 5%

02-02-2011, 10:48 PM

#46

fasterbbc

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Dealer called this afternoon the new crate motor is in. they have tested the car at cold (think todays high was 20) and so far no miss fire codes. Picking up tomorrow. will see.

02-03-2011, 03:55 PM

#47

fasterbbc

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just picked it up and so far so good. 21 miles and 2 start ups.... LOL hope this was it.

03-07-2011, 12:09 PM

#48

fasterbbc

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Update, well I have loged daily start ups from -10 to 40 F and have yet to have an issue. So I guess the problem is solved. my guess is the rings were mariginal in the Number 3 cylinder. my caution on buying one is don't pass off the missfire as something minor as it usually is. Happy Motoring.

07-29-2012, 09:33 AM

#49

Andy2.0

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Has anyone ever had a problem with cylinder #1? Could a cat-less down pipe or IC and IC piping cause this?

07-30-2012, 09:27 AM

#50

fasterbbc

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I don't have an answer for you on the #1 cylinder. However I am now at 54k miles and no issues. motor replaced at 18k so evidently something was wrong with my #3 cylinder, piston or rings.