View Full Version : "HELP" Throttle Body Question

04-07-2004, 08:09 PM
What is the valve on top of thr TB? What is it for? etc. etc.
I am asking this question because I found this valve? or what ever it is. laying on my valve cover, and saw that it went in on top of the TB, could here it sucking air and as I screwed it back in my idling got better until it began to tighten up, then the idle slowed down. Turned it back until the idling settled in at around 800rpms. What does this thing actually do? :( And how critical is it?