Misfire Help
06-20-2008, 11:58 AM
#104
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06-20-2008, 12:35 PM
#108
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ha i might as well wait till next week when i get the meth on. i'm gonna wait and see what every1 says of the tune first
5hours 15 minutes each way
boooomp
5hours 15 minutes each way
boooomp
Last edited by Altiery54; 06-20-2008 at 12:35 PM. Reason: Automerged Doublepost
06-20-2008, 02:51 PM
#109
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damn you all lol..Im having a similar problem, but my car runs like ass at WOT also. It misfires around 4K almost EVERY time. And ive throw nthe p0300 code twice at idle, ad if i do leave the car urnnign for alittle longer then it does kinda idle like b/s...Please update this thread when someone figures it out..but then again why does my car **** upat wot and yalls dont??? Im replacing the tune (with a gm stage 2 tune) and coilpacks today and we shall see :/
06-21-2008, 03:03 AM
#114
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update..think i mite have fixed it. Changed the tune back to a gm stage 2 tune and its running great so far..ill update this if anything happens
lets pray
lets pray
06-21-2008, 10:57 AM
#115
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06-21-2008, 01:42 PM
#117
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thats good to hear bro. i really hope i can get mine figured out soon. it is totally bumming me out. i have my meth waitiing to be installed and my header/downpipe will be here very soon. so i need 2 get this figured oout asap
06-21-2008, 01:49 PM
#118
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o and also check the rubber hose that connects to ur intake manifold that goes to ur boost actuator. If that is off then that causes idle problems
06-21-2008, 01:57 PM
#120
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06-23-2008, 02:35 PM
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UPDATE:
The problem is not fixed. It happened today in every fukin gear and this time worse in first. I think its my injectors also. I still dont know why its happening to me at WOT and sometimes idle. This really sucks
https://www.cobaltss.net/forums/show...90#post2504090 <<<ppl help me please
The problem is not fixed. It happened today in every fukin gear and this time worse in first. I think its my injectors also. I still dont know why its happening to me at WOT and sometimes idle. This really sucks
https://www.cobaltss.net/forums/show...90#post2504090 <<<ppl help me please
06-24-2008, 10:03 PM
#122
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Unhook your O2 sensor to close loop the pcm so that it ignores most of the sensors.
This will help you eliminate quite a few things if the problem goes away with the pcm looped.
If you have hp tuner you should be able to start monitoring different sensor for iregular behavior at wot.
Another thing is your intrcooler pump working.High temps there could also cause you greif,
This will help you eliminate quite a few things if the problem goes away with the pcm looped.
If you have hp tuner you should be able to start monitoring different sensor for iregular behavior at wot.
Another thing is your intrcooler pump working.High temps there could also cause you greif,
06-25-2008, 12:02 AM
#123
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Unhook your O2 sensor to close loop the pcm so that it ignores most of the sensors.
This will help you eliminate quite a few things if the problem goes away with the pcm looped.
If you have hp tuner you should be able to start monitoring different sensor for iregular behavior at wot.
Another thing is your intrcooler pump working.High temps there could also cause you greif,
This will help you eliminate quite a few things if the problem goes away with the pcm looped.
If you have hp tuner you should be able to start monitoring different sensor for iregular behavior at wot.
Another thing is your intrcooler pump working.High temps there could also cause you greif,
06-25-2008, 12:05 AM
#124
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alright boys i have an update. i bought a tune from fast98 which helped out with alot of the problems, i for some odd reason am still misfiring at idle and less than 2K RPM's. at WOT it runs absolutely perfect no misfires at all. so 2morow night. i am taking off my TB spacer, cleaning my TB again w/ TB cleaner instead of water, and my biggest problem an air filter i bought with my injen that has atleast 5K miles from me and a think around 15K from the previous owner the thing is absolutely disgusting so that may be choking up the airflow cause i only have misfires when i'm slowing down and at idle, so i think that mybe i have bad air flow since that SOB is so god damn dirty. scans from hptuners will be posted 2morow
