Hello all I am after bit of help
I own a 2001 astra coupe turbo
Problem is missfire between 3000-4000rpm which put emmision light on, put on tech 2 and showed missfire 2,3 and 4. Fuel trim rail 1.
put new plugs in and cleared codes and run worse. so put on new coil pack but no different.
then i,ve removed one of the cats. checked for vacuum leak. checked injectors. changed oil and filter, new fuel filter, put fuel system cleaner in. and giving it a compresion test. still the same. so give it to vauxhall boys on fridy and they said that the ecu had gone. they changed that then said the first lamba was not fluctuating and givin constant reading of 450 so they changed that today sat. then say theres slight hesitation on low revs and they think it the amm.
Go pick it up and pay the £691.01 and drive away get 200 yrds and missfires again, go back but only mastersh*t techs there and say come back monday. after moaning for ages get a car off them.
just wondering if anyone has any ideas as i payed all that money
£11.84 non return valve ( i broke this on top breather)
£15 car pass
£78.75 lamba sensor
and the want anoter £89 for the amm as they think it might be that now but the tech 2 not showing anything
Could it be that is the problem and thats what is was all along but they put ecu on.
Need help got to go back on monday.