why is my car cutting out whilst travelling? on 1990 Volkswagen Fox

my car vw fox GY engine can travel well going 120km/h or even 140km/h but then sometimes it cuts out like there is not enough petrol it just start jerking whislt driving. i have checked fuel supply its fine, but it still sometimes does this. at times u can travell the whole day with no problem. please help me!

by in Clinton, IA on November 12, 2012
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2 answers
ANSWER by , November 12, 2012
seek a diag and est due to it could be several issues
ANSWER by , September 28, 2014
I had the same problem with my fox.It was the module and coil that went dead