So I just had a new clutch put in and that is all good did the break in and everything is fine. Not long before that I put a new IACV in and a new TPS in. Everythign was wonderful for a bit and now I am having as stated in the title occasional hesitation in the lower rpms when. Possible causes?

 

Was your old TPS working ok? Maybe put it back in and see if the hesitation goes away... Just a guess.