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surging?

RICE KILLER

RICE KILLER

New member
so heres whats going on, when i start my car especialy when its cold it likes to surge, sometime all the way up to 1500rpm then it will run steady for a while with a few random surges. is anyone elses having this problem? suggestions? look at my signature for mods thanks very much for any help
 


who did your tune?

i had that, and it was the tune.

But check for vac leaks first.

how much vacuum at idle?

ALso can you check the Idle Air Counts at idle?
 
i have a friend who tunes my car he has tried to play around with it to figure out, since i know very little about tuning. but i did un plug the air idle controll and it idled smothly but at about 1100rm if that helps. the car has 0 vacuum leaks, that was the first thing i checked for and when it is idleing steady the vacuum gauge stays at 15 to 16in hg
 
does your friend have the ability to move the IAC valve through the steps? if so, try moving it through the steps to see if the car responds if it should. If not, its prolly the IAC.
 
chrisb said:
Im thinking tune with the 42s is doing it. unless there is physical promblem else where.
Click to expand...

i am actually running my stock injectors for the time beeing but i do have the 42.5s ready i just ahve not put them in yet sorry i should have specified.
 


matt5112 said:
does your friend have the ability to move the IAC valve through the steps? if so, try moving it through the steps to see if the car responds if it should. If not, its prolly the IAC.
Click to expand...
i will have to see if we can do that later today, and if you dont mind me asking what was off in your tune that was making your car surge?
 
He had a vacuum leak...but your running a tune for 42.5 injectors with stock ones in there? Probably the issue jeeves.
 
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