Hi,
Took my car to Vauxhall main dealer with the following problem -
2001 2.2 CD auto petrol.
very rough idle on start up
poor acceleration.
ecu light on.
It feels like fuel starvation. I have to let the car warm up for 3mins or so before I can press the accelerator or the engine will cut out.
ECU light never goes out.
Vauxhall said I had a code for the O2 sensor which they replaced. This made absolutely no difference.
No they say it is the throttle body which needs to be replaced.
What makes me mad is they replace a part, it doesn't fix the car then expect me to shell out for another part which may or may not fix the problem.
What do you do in these situations? as far as I'm concerned the diagnosis was wrong and therefore I shouldn't have to pay for the o2 sensor.

Any advice gratefully accepted.
Thanks,
Steve
- now with fault code