okay I just did the TB mod while I had the intake manifold off and everything went fine except when I got my car started my idle rose up to 3k rpms for the first 30 secs or so (didn't do it before) then fell down to about 1500k and was jumping in between 1400-1600, vrmm vrmm vrmm vrmm ect...I'm thinking the throttle plates are sticking open somehow, but I am confused....please help!!!!

P.S. I've tried reseting the TPS, and idle and no effect...

 

vaccume leak maybe? Check every thing. Re-calibrate the TPS don't just jumper the connector.

 

no vac leak, that is what I mean I recalibrated it, didn't know you could reset it by jumpering it....thanks for helping though

 

did you re-adjust your throttle cable? maybe it is sticking on something. CHeck all the linkages. But this still sounds like a big vac leak or the TPS

 

yes I checked all of that, it is doing the same thing as when has my fast Idle cam was opened to much....

 

take the fast idle thing out. Block it off and throw it away.

 

it is, I did the TB mod

 

i thought that just involved removing the secondary plates on the TB. I did not know that. have you checked the BAC? or is that gone too?

 

TB mod includeds removing the fast idle cam and coolent passages through the TB, as well as the 2ndary plates plates, when I say I have reset the Idle I mean I have reset, BAC, Varible Resitor, TPS, and checked for vac leaks....

 

well I am out classed here you need guru help bro. I don't know what could be causeing it then. Sorry

I want to go to austin tommorow too but I don't have cash

 

I don't understand my throttle plate are closed! I'm so stumped

 

you probbaly need to screw in the throttle stop screw on the top. that will close the plates more. a 1500 rpm idle is pretty normal after doing the TB mod. now you just need to lower it. 2 ways are that screw and the BAC.

although it should be a pretty steady high idle I think... you might have a vac leak..

I'm doing the TB mod right now so I won't know off hand what happens till it starts up tomorrow

http://www.1300cc.com/UIM/

 

yep tried both of those, like I said before the throttle plates are totally closed, I unscrew the throttle stop screw and then it deosn't even touch the stopper, I'm beggining to think its the TPS even though it was working fine before I did the TB mod....thanks for you help Scott always nice to hear from ya

 

there is a 2nd screw on the bottom too.... might try to take the TB off and loosen that one up if you can't see anything else wrong.

 

yeah checked that one too, he whats that thing next to your charcol canister? and wow S5 Throttle bodies are alot differn't that S4...2 TPS?

 

it's my oil catch can, check out the "plans" pic

and ya S5 has 2 TPS. that's the only diff... that ones been ported too. maybe that's why it looks diff.

 

Dunno if you've seen this, but maybe you'll find something helpful...

http://www.teamfc3s.org/info/articles/idle.html

 

hey how did you make that can...is it just a open can? I removed the rats nest and am just running the line from the oil filler neck straight to my TID for now just to be safe, but I have noticed a **** load of residue in the upper intake manifold....also I just went out for a drive and it drive fine the idles also steadies out at 1500rpms with it in gear...

 

home depot

http://www.members.shaw.ca/smacken/can002.jpg

 

i had similar problems,and everyone sayd it was a vacum leak,i was sure it was something else-sure enough,it ended up being a vacum leak.how did u check for leaks?carb cleaner spray has worked well for me.good luck!

 

yep I sprayed carb cleaner all over and no effect...

 

could be the upper intake manifold not tightened down or the gasket, also the TID usually has cracks in it

 

hrmm I'm getting a new UIM mine has a small crack closests to the front of the car, but I sprayed carb cleaner in it and nothing happened, I don't think that the problem.... the UIM has the TB on it so I'll just use it stock....

 

did you use a new gasket? also all the nuts and bolts are back on the upper intake manifold (four nuts one long bolt).

How is the power? Is it all still there?

James

 

yep power is fine