I need a specification for a C4 throttlebody. At idle, there is a gap between the bore ID and the plate (at the bottom of the bore). I think the only place to find this is the GM manual and it's a critical adjustment for idle air control.
I need a specification for a C4 throttlebody. At idle, there is a gap between the bore ID and the plate (at the bottom of the bore). I think the only place to find this is the GM manual and it's a critical adjustment for idle air control.
I didn't find anything useful in the '93 manual, but the '87 manual gives a process/procedure to set the throttle blades to a setting that will deliver a "default" minimum engine speed (which I infer is in case the IAC fails closed).
I didn't find anything that discusses a gap or mechanical clearance adjustment, if I'm understanding your post correctly.