I took my car in to the vauxhall dealer as it was intermittently cutting out after startup. If I started it and revvved it then it would be fine.
The garage said they could not get it to stall and there were no error codes on the ECU. They then proceeded to upgrade the ECU software from v5 to v6.
I went to the garage to pick it up. It started fine. As I had to fit the child car seat the engine idled for a while before I drove. I got to the exit of the garage and waited to join the main road, during this time it stalled.
I ran back in and they came out with the ECU reader - no error codes.
They are stumped but suspect the throttle body possibly a dry joint. £300 for the part, after that it must be the ECU they say. They offered to dry and get a 'donor' throttle body to try it out but that would take a few days.
I tried to drive away again but as it stalled immediately I left the car at the garage and walked home. So the problem is now worse but at least 'recreatable'.
"The garage is clutching at straws" says my neighbour who maintains his own cars and recommended I post a forum entry here. He also said if the ECU is a problem there are companies who can check them for a fee (any recommendations?).
A mechanic I called reckoned it would be cheaper to source a throttle body over the internet (who is a reliable supplier?) and he could fit it for me.
What should my next step be? I've called the garage and told them not to do any work until further notice.
Thanks in advance for any tips.
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there is a known problem with the fuel temp sensor on this model, basically the sensor is replaced for one that has gold wireing contacts (less resistance) you could disconect it and see if its been changed already you wont always get a trouble code with this fault either so worth a look, my bet would be crank sensor, unless the throttle body is realy gummed up may be worth a clean up (cant hurt it and may improve things) egr faults on this vehicle usually occur on light throttle at steady speeds unless they are stuck open then they cause poor idle hunting etc but usually after driving not from start up
Thanks for all the thoughts everyone - in the meantime the garage found the EGR was sticking, they cleaned it and it was still sticking so they replaced it - all OK now! And they only charged me for the part!