The warning label on the throttle body said not to clean it but I did and now it's not starting. Cranks over just fine and idled good before I did this. The reason I started messing with it was at speeds 45+ there would be some bucking or hesitation but definitely not transmission related. I had a new Ford TPS sensor laying around so I decided to change it for a shot in the dark. When I took the TB off it was gunked up pretty bad, I threw everything I had at it, Purple Power cleaner, Sea Foam, brake cleaner, came out looking newish. Put in the new TPS sensor and IAC (Ford) for good measure. Cranked it, wouldn't start, I put the old parts back in, still won't start. Checked and verified 5 volt reference at the TPS and voltage climbed on my meter as I manually pulled on throttle cable, everything was within specs. As I understand it, the warning label is there as a precaution because the coating in the actual body might be harmed. I've cleaned plenty of TB's before with no issue so this has me baffled. Did anyone ever hear of a no start resulting from cleaning the TB?