TBirdJKC
Registered User
So I pulled my TB last night to replace the gasket and figured I would throw on a BBK 75mm TB I bought from a fellow member in the spring. I put it on an went for a test drive and it felt like the butterfly was binding up when closed. I thought no big deal, the idle screw is probably misadjusted. Came home, popped the hood and moved the throttle by hand and strangely enough it felt fine. I pulled the IAC connector and the engine died. So I increased the base idle a bit until it was around 450. Reconnected everything and still the same sticking. I adjusted it all the way up to 1200rpm and still sticking at the pedal. What could this be? Worn bearings, damaged butterfly?