Another idle thread, sorry..

Shiloh · Jul 16, 2016

So I've got my 1g talon tsi up and running finally. Running great with plenty of power, etc.. Only issue I'm running across is the idle. I've deleted the fiav, isc, and the egr. I've checked the tps and its properly adjusted. I have the throttle stop switch ( one wire switch on the throttle body) unplugged and adjusted correctly. Only thing I use to adjust my idle is the biss.

Things happening are, my idle will increase to 1500 till I tap it, then it drops to around 900. But as I continue to drive it the overall idle increases to where I have to use the biss to turn it down again. From what I'm reading the throttle cable is most likely culprit, but what else could it be at this point?

enriquez2000 · Jul 16, 2016

If you tighten the throttle cable too much it will raise your idle as the car gets hot. Happened to me last summer

dsmrestorator · Jul 18, 2016

The above post makes sense. Try loosening the cable to see if idles more consistently.

enriquez2000 · Jul 19, 2016

Howd it turn out? Its a s easy as lossening the 2 -12mm bolts and adding a hair of slack.

Shiloh · Jul 20, 2016

Sorry I never got around to replying. Definitely not due to my throttle cable at this point. I just recently rebuilt the entire motor, new clutch, rebuilt the wiring harness as well. i went through more adjustments yesterday so now timing is set, idle is actually holding at 1000 thus far with new throttle body gaskets and injector o rings. But it still has a miss. It's more so a rough idle now that gets worse when the fan kicks on. I believe it's vacuum leaks at this point but still have to look further.

Thank you for your help, and if anyone has anymore Input it's greatly appreciated.

coloradotuner · Jul 20, 2016

I had the same problem after driving around for a while and the car warming up at stop lights The Car would "rev it self up" to about 1500. I took apart the throttle body and replaced the throttle body Shaft Seals, BISS, New Gaskets, and PCV, And the idle problem went away completly.

Here is a good source to help you http://www.dsm.org/how-tos/tttt/tttt3.html

Shiloh · Jul 20, 2016

See that's basically what mine is doing now. Rough idle that sounds like it's cammed but on the way to work this morning it was more consistent around 1000. Then it would rise up to about 1200-1400 randomly. I'd tap the gas and it goes back to 900-1000, smoothish, but cammed sounding still. If it's any consolation I have the 6 puck act 2600 sprung and I can take off smoothly. Just rough idle.

Also, biss o ring was good and new. Entire engine has new gaskets and vacuum lines with all emissions gone. Only the throttle body shaft seals at this point could be a culprit.

GRAVEDIGGER · Jul 20, 2016

If you haven't done the throttle body shafts yet that could definitely cause your symptoms. You can use a boost leak tester to check for leaks at the throttle body shaft too BTW.

Shiloh · Jul 20, 2016

Yea I have a boost leak tester, just been so busy chasing every other bug lately. Blew all my coolant out today. yesterday was my oil cooler LOL

. I'll get the shaft seals ordered anyways just to verify a good throttle body altogether.

Shiloh · Jul 21, 2016

Well I'm not for sure but I believe I just fixed the whole issue with the popping, rough idle and everything alltogether. Throttle cable is def. stretched as its not even going 100% wot. But my 02 sensor was universal and I didn't wire it in properly I guess. I redid it and wala, cel is gone. I believed it was on due to emissions LOL

.

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Another idle thread, sorry..

Shiloh

enriquez2000

dsmrestorator

enriquez2000

Shiloh

coloradotuner

Shiloh

GRAVEDIGGER

Shiloh

Shiloh

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