OK guys I need your help and input
Why? because mechanics don’t know and I cannot afford to buy another car.
1.8xe, 52, club, saloon.
The present situation is that it will not idle, therefore impossible to drive. The census is that it is starved of air and that the throttle body needs replacing. It runs slightly better with the air pipe off and quite a bit better with the evaporative emission pipe off allowing more air in, the idle revs can be regulated by restricting air pull through this inlet, at which point the engine runs smooth. There are no stored or live fault codes stored; when I left the garage.
I have had the car back from the garage because of money i.e. their mounting labour charges for investigation. So I have got to do it myself!
I drove the car back (not far) with the EEC pipe off and I have checked for codes and got P0100 (Mass or volume airflow malfunction) but because I had the pipe off and it did not show up on a mobile tech I am unsure if this is a true fault. I really need to try out a known good one!
The EGR is now blanked completely so is out of the equation.
It as had
Top end rebuild/refurb (skimmed, 16 valves etc) – the cylinder pressure has been checked and was fine and even across all, I do not know the figures.
New cambelt – rechecked and fully inline
New plugs, coil pk, air filter, oil and oil filter (rechecked and ok)
Throttle body as been cleaned and cleaned again
When I had the car back following the head rebuild it idled at 1100 and was fairly smooth (but it was not whining, my interpretation of the engine sound). I had a good go at cleaning the EGR and the revs dropped to 600 but was lumpy. I took it for a run and it started missing ‘code showed up as intermittent misfire on cylinder 2’ (mobile tech) this as not showed up since although it as not been on a run only revving and the short journey back from the garage.
So you can understand why I need your assistance because the garage have been on to the Vauxhall helpline and they cannot suggest anything except change this then that etc
My thoughts are that I need to change the MAF sensor to at least eliminate it but after paying so much out I am reluctant on a guess.
Therefore over to you guys