I see this thread is a few years old... but did you ever find an answer to this?
I've had similar challenges with my 05 Zafira A and it's been in and out of the Vauxhall dealership for the best part of the last 2 years.
Yes the EGR valve has been checked, the fuel injector pump has been replaced (twice!) and they've bypassed big chunks of the wiring loom too.
If anybody has any ideas or can recommend somebody around Northants/Leicestershire who would have a clue I would love to hear from them.
|