1999 Vauxhall Corsa • 100,000 miles

HI I have a 1999 1.0 corsa envoy, my idle sensor control valve went a few months ago, I found that disconnecting it cured the high revs it caused while ticking over, a few weeks later though, the car started cutting out after driving it for about 15 minutes and wouldnt start again for about half an hour, it only seemed to start again when the battery was just about dead and it was onle y just turning it over, iv been told this might the crank sensor but dont understand how the engine runs fine then just suddenly cuts out, thanks for taking the time to read.
December 8, 2012.

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