I hav a 93 golf 3 gti 2l 8v <2e engine>. 3 months ago the sprocket at the end of the crankshaft broke. replaced it and set timing at 6 degrees. did diagnostics and ams, knock sensor and temp sensor came up as faults. adjusted ams, replaced temp sensor and knock sensor. then added injector cleaner, engine and radiator flush, left to idle then did full service. car ran fine for a month and now it stalls after 15min of driving but doesnt cut off. so wile idling i advance timing on distributor and without turning car off i manage to drive for 15min until it stalls again. when i try to give petrol it pulls back and backfires and has a missing sound. now i when it stalls i turn off, leave 4 30sec and start. goes 100% till 15min again. tried leaving idling for 2hrs at 2000rpms but never stalls. only when driving. cleaned throttle body ,adjusted ams and co reading still nothing. please help. email me on [email protected]. desperate. vw agents cant find fault. am at a loss.