i have been experiencing internittently alerts by the chek light followed soon by motor stalling. After waiting for a relative short time motor would start again and in most cases would work fine .Local mechanic and VW dealer looked into it ,rtor cap changed , a new relais in teh electronics, but problem still there.
I seem to know that stalling is going to happen before light come up, by a subdued humming noise and a certain resistance in the drive , which wouldnt be there when things are normal.
grateful if suggestions for cure or similar experiences with succesful solution. Thanks

Whens the last time you replaced the fuel filter and spark plugs?