strage throttle hang up!

[S99TA]

I have the fast 90/90 set up. my car will act like the cruse is on and if you push the clutch in the RPMs will stay up and if i tap the throttle it will come down. did some logging and when ever i had the problem the TPS % would be 2-6% with my foot off the throttle. can not duplicate the high closed throttle TPS % with key on engine off only when engine is running. i can get it to hang up when running and if i push the throttle body closed it will idle down. is it possible the engine is sucking the throttle body open? any one else have this problem? do they make a stronger spring for the fast 90mm throttle body?

[WS6FirebirdTA00]

FAST throttle body? If so, that is your problem, POS. Get a stronger spring for it.

[shaun]

Hey I had the same problem with two of these both turned out to be bent shafts,you don't notice until disassembled with the shaft on a flat surface.
Only bent by about 1mm but enough for the shaft to rub on the throttle body housing making it stick with light throttle applications.

Hope this helps.

[69lt1bird]

Do you have a two piece throttle cable? Traction Control vehicles have them. Make sure the cable is adjusted correctly of you do.