silverbeast

iTrader: (16)

Hey guys, i just installed my ported fast and like it says the idle is messed up. It will idle around 1100 rpm's until i start driving. When i press the clutch in between gear changes it will jump up to 2500 rpm's. The only way to get it to die back down is press on the brake and let the clutch out at the same time and bog the car. Going down the road i dont even have to give it gas it will pull itself and i have to ride the brake. Does anyone know what this might be? I dont think i have a pinched vacuum line but if i have to take it back off i will. Do you think i need to have it retuned to get the most out of it? The only other thing i did was install a piece of smooth tubing where my factory belows went. Anyway thanks guys for your help. Charles

black01_WS6

iTrader: (13)

it needs some of its tables from the tune messed with. You don't need a whole new tune, and it should't take to long to fix it.

Michael02hawk

iTrader: (26)

I would think you'd need to re-adjust your IAC counts, then re-adjust your TPS voltage, before tuning anything.

silverbeast

iTrader: (16)

thanks guys, i was hoping that was all it was going to be.

ls2 bait

iTrader: (11)

is this new? if it is maybe ur idle set screw is just turned out too far throwing the iac out of whack. try to turn it in some (closing the blade more) about a 1/4-1/2 turn at a time and see how u make out with that first.

Michael02hawk

iTrader: (26)

Exactly, but use a scanner!

jimmypop13

iTrader: (17)

check the voltage of the blue wire on bottom plugin on the throttle body. Around .6v will give you a stock idle.

You HAVE to do the idle relearn procedure everytime you mess with the screw. Also, this may be your only problem since you havn't done the idle relearn yet, so try it.

1.Unplug the bottom sensor on the throttle body
2. turn the key to the on position but don't start the car
3.Wait 30 seconds.
4. turn the key to off
5. plug the bottom sensor back in
6. start the car

ls2 bait

iTrader: (11)

+1 sorry i have a scanmaster so i negelct to mention that usually.

shooter

iTrader: (2)

Just wondering is this car is A4 or M6, I had a FAST on my A4 and it had a hell of time finding it's idle but I don't have a hole in my throttlebody blade. Taked and taked with friend, and from what i've been told A4 act up alot my them M6 to do?


thanks barry

jimmypop13

iTrader: (17)

taked and taked?

silverbeast

iTrader: (16)

Hey guys thanks for the help. let me answer a few questions.

- it is not brand new, i've had it on for awhile and decided to have it ported since Vengeance was running that special.

- The car was running great before i took it off as far as the idle goes.

- the car is an m6

now if i dont have a scanmaster can i use my old predator as a scan tool? what am i looking for when i do this? What could happen if i do this and dont use a scanmaster?Anyway thanks guys Charles

Ron@Vengeance

iTrader: (51)

Check all of your gaskets/O rings/vacuum lines. The port work should not affect your idle.

Ron

silverbeast

iTrader: (16)

Hey Ron, I know the port work hasnt fucked it up. Im just trying to figure out if i have a pinched vacuum line or something like that. The port work looks great!