Hi all, i have had my astra for just under a year it has around 77k miles on its on a 53 plate and its a MK4 1.6 16v twinport. Basically the car was fine when i started driveing it this morning i got about 2 miles down a stright road which i stopped for about 3 traffic lights, turned right on to a bit of a bumpy road and stopped for a junction. When i stopped the car was hunting for a idle speed up and down from 15k revs to 5k revs so i turned round to come home, pulled on the drive and let the engine idle and it was finebut i got a really bad egg smell comeing from the exhaust back box but no smell from the engine bay. I reved the car to around 50k - 60k reves turned it off and started it a few times and the idle speed seems fine but the smell is there. I have the car booked in at a mates garage on monday to have the diagnostics checked but it think it will come back with no faults.
Any ideas ??.