sticking throttle

[biggsteve97]

Originally Posted by makman1297

Maybe you can pull it off and see if there are any strange wear marks in the bore of it and then just wiggle it up and down and see if there is any play, if there is time to a new one. I agree, no springs off of a TBI, did you check to see if your spring broke and is maybe jamming it up. Good luck

There is some play but it is no worse than any other used throttle body I have or come across. It has less play than the one currently on my buick so I hadnt put much thought into it. The spring appears to be in good shape and Ive looked down the bores with a light from both the top and bottom and could see no marks at that time. it was about 6 months ago after the second cable broke so I will need to check again. Im starting to believe there is something wrong with the bores or maybe the throttle shaft is twisted allowing the blades to contact the bores at idle. Its just weird it only does it with the engine running and not when it is off. Im thinking its time to take it apart and put some bore mics in and see. After thinking about it all day and some things on this thread and others, I believe my problem lies solely within the throttle body base. Ive just never had this problem with a throttle body before so I wasnt sure where to even start.