Re: 00 alfa 146 t spark 1.4 rev problems please help
I had the same problem last month!
A few people on here suggested it could be a faulty stepper motor..
So i got my self on ebay and found someone who was selling a complete throttle body with the stepper motor etc on it and won it for £7.51 !!
Fitted it on the car and it sorted the problem out straight away!
If you want to change just the stepper motor I wouldnt bother, Id try and find someone on ebay who is breaking a TS engine and try get the stepper motor off of them - but fisrt ask them if the car was idling properly before they dismantled the car!
Hope this helps mate