Hey i've been havin this problem since i swapped in a z6 a couple months ago. basically wen i'm drivin and i stop n im in neutral my rpms stay real high then if i lift the back of the pedal up with my foot it drops to normal. any ideas on what that could be? I do have a aftermarket TB and we had to adjust the screw a little bit cause it was too tight, could that have nething to do with it? lmk thanks

 

Throttle cable?

 

my z6 does the exact same thing, but only in the summertime. i've assumed that my throttle body valve is probably sticking, so i plan on cleaning one of these days

also @Grumblemarc

when removing the throttle body, is it necessary to replace the gasket? idk if its a paper or rubber gasket or what

 

I think it would be best to replace any gaskets. Especially if they're original. These cars are pushing almost 20 years.

 

well like i said its a brand new throttle body so the gasket is brand new...and now im gettin pissed cause its hot as ***** outside n now my throttle wont ****in move, my gas pedals stuck, and the cable won't come off cause i cant move it >_<

 

The throttle cable may be adjusted too tightly. There should be about 1/2" of slack in the cable.

 

well now the problem is the plates in the throttle body are stuck closed. idk how the hell it happend i adjusted the screw earlier, rev'd it, it looked like it was doin better then before and then the gas pedal got stuck. i got the throttle body off and the plates are completely stuck. any ideas?

 

The throttle stop screw is set at the factory and should never be adjusted. It's probably best to replace the throttle body at this point.