Originally Posted by mello
Its in the all correct positioning when running and off but when the car is running and i unplug the vacuum and plug it, it sputters like it wants to cut off and the levers staysu teetering at midlevel....
If you unplug the vacuum line from the BCA and the rod does not fully extend, you either have a bad BCA or the butterfly valve the rod actuates is not moving freely. Remove the BCA, disconnect the rod from the butterfly valve arm, and see if the butterfly valve arm moves freely, If not, spray WD-40 where the arm enters the throttle body, and on the back side of the throttle body where the arm exits. While rotating the arm keep spraying until the arm moves freely. Put it back together and see if it makes a difference. If not, you may have to replace the BCA.
I think you have vacuum problems, but if the BCA rod does not fully retract when you pull the vacuum hose off there is something else going on as well.
Where does the rod from the BCA sit when the engine is not running? Is it fully extended?
2001 Bonneville SSEi (retired at 365,000 Kms.)
2014 Jeep Grand Cherokee Overland (yes, I know its not a GM)