showoff

iTrader: (2)

I've recently been having a weird problem with my ls1, when the car is idle'ing if you try to go Wot off idle the car falls on its face...rpms drop to around 200-300 and the car sounds like its trying to stall but it never does...and soon as u come off Wot the rpms go back to normal and the car idles solid. If I feather the gas off idle it'll rev like normal and once I pass the regular idle speed(800-900rpm) I can go Wot, and the car will act normal and rev...
We've checked and changed the spark plugs, turned off the 02s, and disconnected the maf.. And its still acting the same, iam open to any suggestions..the car isn't down on power at all so iam sort of baffled by this problem, and iam a m6 not an auto if that helps...

P.s no codes popped up except a tps, although the tps is functioning fine because my nitrous is activated via the tps and there's no problems with that. We cleared the code, and it didn't change anything

StevieZ

iTrader: (3)

I sometimes get the same thing. I am pretty sure it is a tuning issue.

5.3LJimmy

iTrader: (10)

I was gonna say TPS before I saw mention of the TPS code. You need to hook up a scan tool and check the TPS operation through the entire range(Not just WOT). Make sure as you press the throttle the TPS is accurately reading the pedal position. A bad MAP sensor can also trigger a TPS code so make sure it is operating normally also.

showoff

iTrader: (2)

thanx for the suggestions ill checkout the tps today, and if it was a tuning issue i don't understand why the car would start acting up now out the blue..ive been driving it for 1-2months since its been back together and its never done anything like this before...but ill swap the tps real quick just do see if it makes a difference

mrchavs

turned out it was the spark plug wires i had no codes either and it would stumble after going wot at idle. thats my suggestion i got an 02 ta m6 ws6

BerryWS6

iTrader: (9)

Ive got the same problem, I was thinking it was in the tune. what wires did you have that went bad, were they stock?

StevieZ

iTrader: (3)

My wires are going on 4 years old so that may be my problem too.

KMS.1320

iTrader: (1)

Look at your fuel maps off idle, the tip-in fuel mix is likely too rich.