erratic idle and engine surge need help !!!!
hello everyone, i have a question. i just installed an iceman cai on my 02 neon sxt. everything installed correct and reset the computer. on first startup and drive, everything was good. i drove for about 1/2 hour and then started to notice that the engine rpm would "stick" around 1500 when the clutch was depressed. when i came to a stop, the idle would return to a rather high 1000 rpm. i checked that the throttle was not binding and no vacuum leaks also. is this the computer compensating the high rpm for the cooler air intake, and will it return to how it was before, after the computer adjusts? it used to idle around 700 with the clutch pressed. it feels like it is breathing better, but i don't like the stuck throttle feel.
update, the idle revs to redline and i have to shut the motor off or it will rev its self to death. the idle will surge up and down at 1500rpm. i cannot drive my car now. am i running lean? can the stock computer handle the cai? the car only has 34k miles, and i had no problems untill i installed the cai. if anyone has some advice, please let me know. i'm without a car untill i fugure this one out. my only option is to reinstall the stock intake and hope it fixes the surging???????
update, the idle revs to redline and i have to shut the motor off or it will rev its self to death. the idle will surge up and down at 1500rpm. i cannot drive my car now. am i running lean? can the stock computer handle the cai? the car only has 34k miles, and i had no problems untill i installed the cai. if anyone has some advice, please let me know. i'm without a car untill i fugure this one out. my only option is to reinstall the stock intake and hope it fixes the surging???????
Try reseting again ya ECU. disconnect the Neg for at least 15-20 min. Also, check the Air sensor hose/all HOSES. make sure you have install it firmly and have all, if any, packing from the switch from Stock to CAI(ie rubber stoppers, o-rings). The reason i say this, is to make sure nothing went in ya T/B
well, i found my problem. the small plastic pipe from the intake to the tb had collapsed at one end, creating a massive vacuum leak. and just as i suspected, it was running lean. i put the stock bellows tube back on for now. she idles at 700 rpm in neutral and it drives very nice. thanks for all the input. i bet that the heat from the fan softened the plastic and the fact of me getting on the car while it was soft just pulled the end of the pipe inward.


