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Idle issues.

  • Thread starter Thread starter TDCRacing
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TDCRacing

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Car surges at idle only. Doesent seem to be a real pattern with this but i do notice it a lot more when the engine is cold rather than warm. This just started not long ago and cant remember doing anything to my tune before it started. The engine will surge in small amounts lets say from maybe 600-1000 then will slowly climb to like 600-1500 then eventually just kill. starts right back up and pretty mucch does the same thing.



Give it a little gas and hold it it is fine. Also when it's doing it it is only in neatural. As soon as i put it in drive or reverse it stops.Another thing i noticed was when driving and comming to a stop the rpms surge up maybe around 400 or 500 rpm's and the car jumps foward a little and then everything is fine. Going to check the iac now. And just for kicks i adjusted the idle to 850 across the board so i could rule that out. Trims are out of wack but have been way worse with no problems. Working on that also.



Ideas?


Mod list in sig
 


Not sure if this is tune related or not...but so far it's not loking like it...here is a screen shot of the car when it is running on my scanner....any one with tune related experience-See anything out of the ordinary?




chartdisplay.jpg
 
May have figured this out. will post up the results later tonight.
 
Well After my exhaust fell off while driving, I went back home and re-attached the Y-pipe to the rear header and crossover once again. This time it made a little better seal than it did last time....but is STILL leaking pretty bad. Anyway after this the surging stopped. It was Leaking pretty bad before also. I mean I cant belive it was something that simple yet I went through hell trying to find it. I mean I unplugged almost every sensor that the car has on it,even the O2 sensor trying to trouble shoot this problem....o well....I knew the surging had gotten worse so i was trying to think of parts or other problems that had gotten worse also. Those two things were spark plugs and the leaking exhaust....



So i guess this problem like many others was kind of like ''Where's waldo''....You look for ever and when you finially find his ass he was right in front of you the whole time.




I cant belive I Over looked my biggest on going problem that i've had with the car while trying to trouble shoot this new problem.
 
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