Car will not idle at start up!
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Car will not idle at start up! Crap! Every morning I go to work my 02 LS1 won't idle for crap! 
Anyone had this problem. It coughs, spits, sputters, and will die when clutch is engaged. Fight this for about 5 minutes and it finally acts right! Runs fine after that until you let it sit for a few hours and cool down, then it does it again. The car is throwing NO CODES! HELP? Thanks... 
Anyone had this problem. It coughs, spits, sputters, and will die when clutch is engaged. Fight this for about 5 minutes and it finally acts right! Runs fine after that until you let it sit for a few hours and cool down, then it does it again. The car is throwing NO CODES! HELP? Thanks... Thread Starter
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Originally Posted by Steel Chicken
it would be somewhat helpful if you posted your list of mods and what tuning you have done so far.
make your tuner look at it when cold so he can see whats going on.
we might be able to help if we can see a copy of your tune or a log file from when its cold.
seems like a relatively "stockish" motor so theres no reason for the mods to make it idle like doodee. I would suggest the tune is borked or somethings wrong mechanically.
we might be able to help if we can see a copy of your tune or a log file from when its cold.
seems like a relatively "stockish" motor so theres no reason for the mods to make it idle like doodee. I would suggest the tune is borked or somethings wrong mechanically.
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Originally Posted by TAQuickness
sounds like your fueling is off while in open loop. You might want to make sure your tuner didn't just tweak your MAF or IFR table to get the WOT fueling in line.
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Originally Posted by Bigdeezs
If it is a wet nitrous system make sure the fuel is not leaking past the fuel solenoid. Mine did and it had almost the same problem. Just a thought.
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Originally Posted by ringram
any codes stored?
So do you have a data logging tool? We really need to know basic things like what the a/f & IAC counts are when it's doing this before we can tell you anything useful. Otherwise you'll be shooting in the dark. There is just too much that could cause this....
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From: Illinois
Originally Posted by 2002ws6
It is throwing no codes and none are being stored. I checked that this morning at Autozone when it was acting up. One important note is that it really seems to act worse as the weather gets colder. I am going to pull the TNT nitrous ring off and reinstall with black silicone thinking maybe there is a vacuum leak going on or something. Whatever it is, its not throwing a code so I have a feeling its something going on in that area.. I would think that if it was a stock componant, it would throw a code as I hear that the OB system in an 02 is notorious for throwing codes for just about every possible problem.
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Originally Posted by cincyrider
My guess is a vacuum leak. Had similar problem on cold mornings, replaced all the vacuum lines with silicone tubing and problem disapeared.
