Right for maybe 3 months my Vauxhall astra 1.8 (year 2000) has been cutting out power (as if it had stalled) while driving it usually when you slow down in lower gear to press the clutch down to change gears and had been gradually getting worse until on friday (29/01/11) I was driving it and the car cut out maybe 5-6 times within 5 minutes and it was quite a struggle to keep the car on without cutting out, which meant constantly having to rev the engine if i was about to stop. I also noticed there was a bit of power loss when driving it when this happened. I eventually got it onto my drive way and got out the car and it sounded like the car was panting trying to keep itself on. Since then I havent driven it.
Its probably worth mentioning that if I drove the car at about 80mph on the motor way for more than 5 or so minutes the engine management light would come on and then as soon as I bring the speed down after 5 minutes it would turn off.
Im due to take it to a garage tomorrow or wednesday perhaps (when i can get the time off work) however was wandering if anyone knew if this was common in astra's and what the issue could possibly be?
PLEAAAASE REPLY IF YOU CAN HELP DIAGNOSE??