Help needed, my 99 1.8 sports engine management light comes on only when the car is standing still for more than 10 mins and then starts to misfire. Just over a year ago had a new ECU which was £££’s as some of you might know, took it to the dealers 2 weeks ago and they said it was lambda sensor (new one fitted by myself 6months ago). Took it to dealers on Friday to have the part fitted (£193) got into car let it idle for a bit then light came back on. According to the mechanic who fitted it he said it still wasn’t right and told reception, obviously forgot to tell me and still charged me the £193.
Does anyone know what could be wrong or have had the same problem?
Do Vauxhall mechanics know what they are doing? And am I being shafted?
Thank you for your input.