Hi All

My lovely S has recently started stalling intermittently, I thought it would be cured by a service so waited and unfortunately it hasn't.

Symptoms:
When driving under normal conditions the car is fine, pull up and she holds her idle at around 1K and is smooth.

Once you open her up a bit say a good hoof down 2 miles of fast roads vteccing all the way to 90mph then pull up and you can hear the car struggling to maintain its idle, almost like its choking, then it will stall at nearly every opportunity after a while she will return to normal??? Sometimes by the time Ive stopped shes already stalled????

Any ideas, I wanted to narrow the field before I take her to the stealers for a look?

Thanks very much

Ron