As mentioned previously, the problem seemed to ease a little over the weekend but the issue was still there in that if I depress the clutch while at a junction or come off the gas too quickly, the car would stall - not %100 of the time, but enough to make it very irritating as I thought the problem may have rectified itself after a few days.
So - I took it into my Vauxhall dealer, (I know... I know...), and they said after putting it on their machine that there were two problems:
1) Mass air flow meter, (whatever that is), needed changing which could cause the problem.
2) Car seems to be misfiring on cylinder 1 which could also cause the problem and would require a new coil pack.
Hmmm.... So I asked them to replace the Mass air flow meter, (£120 inclusive), but didn't want a new coil pack, (£180), as I don't believe my car was not firing on all 4 cylinders.
Anyhow - just picked it up and the problem appears to be better - but still not %100.
It hasn't stalled on me on my 30-odd mile trip home but sometimes when approaching junctions and I depress the clutch, it will get dangerously near 0 revs before picking up again.
So..... should I get them to replace the coil pack? Would it be plainly obvious if a 1.8 Zafira was not firing on all cylinders? When idling, the car sounds as smooth as it's always been - no funny noises, pops, bangs or anything. Is this something I could easily miss?
Any help advice appreciated before I shell out another £180...
Faulty airflow meters do not usually cause stalling- usually hesitancy and lack of power.
I wouldnt suggest you have been fleaced with a new AMM, but I would have changed the coil pack first.
Tim..