2002 Volvo S60 Car has no throttle but drives around town j

Engine Performance problem
2002 Volvo S60t 2.4l 5cyl Front Wheel Drive Automatic/Trip 197000 miles

Hello. Recently my serperntine belt snapped due to a sezied AC compressor. The local shop changed the ac/pulled (which also got rid of the loud winding sound). Well the car runs GREAT around town except that when i step on the gas i get no kick at all. it will eventually get to 60-70 mph in about 20 -30 seconds but when i press down, nothing really happens except smooth and steady. I took it to ANOTHER guy that only fixes up volvo's and he said its not the 1k part that always goes, but 2 cheaper parts but he couldn't tell which. I think he said pedal sensor or 1 other part. Around town and (eventually) on the HW it runs great, no rough idle or antying except the Cruise wont engage. I could get the codes at autozone around the corner. I really would H A T E to take it to the dealer.