EPC light on caused decelerate the speed; at 40m/hr, rpm stalled at 30 and tendency going up(not shifting to the next gear) Mechanic tried changing pedal censure, cleaned around throttle valve area. the next thing we should check TPS sensor or change, don't I?

Vehicle Parts & Accessories - Haynes - Repair Manual for 1999-2004 VW Golf, GTI, and Jetta