98shlude

My TB won't shut all the way. It's only open about a millimeter.

It is causeing my idle to bounce and is really getting on my nerves.

I have tried wd-40 plus another 4 types of lube but nothing seems to work.

Any ideas on how to fix?
Thank you

Fabrik8

Is there a throttle stop screw?
Usually stuck throttles are caused by one of four things:

1) Mis-adjusted stop screw or other stop mechanism

2) too much throttle cable tension, or a kinked cable

3) Throttle plate misaligned on/in the throttle shaft, causing the throttle plate to not be concentric in the bore of the throttle body.

4) Throttle plate mounted backwards; only a problem if the throttle body has a tapered (or angle cut) edge around it. Usually the throttle plate won't seat properly when flipped around.

98shlude

well i tightend the stop screw pretty hard, but didn't change anything.
the cable isn't kinked but, i cant hold my speed with outthe throttle body shuting.( i have loosend and tightend the cable numerous times but nothing seems to work)

in # 2) are you suggesting that i take out the plate clean it and put it back on as best as i can?


thank you

Fabrik8

No, just that you check that the tension hasn't been changed during the throttle body install.