Hi Ian,

>>>>they say vaux policy on warranty claims are they have to be proved.

In there words they have to get a donor car to borrow the ecu off to prove the fault.<<<<

You can understand them having to prove the fault, but wasn't this a permanent fault? Why on earth should a dealer have to use a donor vehicle to prove such a fault? And how long did it take them?

WRT your fault I had a Corsa Z12XEP in a few years back with the same symptoms after another garage had already fitted a pedal sensor. My conclusion was the Throttle body driver in the ECU was at fault which could have been caused by a faulty throttle body. I suggested trying a throttle body first (just in case) as I would be recommending changing it along with ECU anyway. New TB and then new ECU fixed it. I often recommend the suspect driven component is changed as a precaution when I have diagnosed a faulty ECU. (e.g. for ign primary driver fault I would also recommend new coil).

Back to dealer warranty policy, I recently had a Corsa Easytronic with a clutch problem, I had fitted a new Easytronic control module 9 months previous and now it would not actuate the clutch!!! Live data was showing moving of the clutch but I could not see if any actual movement of the pressure plate was taking place. I advised box out in order to check mechanical condition of the clutch components and while it was out the garage fitted a new clutch.

The car then came back to me for bleeding and programming. it took a lifetime to bleed it, but then could not complete the "touch point adaptation" programming. On checking for fluid pressure none was being generated by the integral master cylinder, although live data was showing clutch movement. there is no sensor in the bell-housing so this movement is calculated and based on master cylinder piston movement. I concluded a module fault and was advised by Vauxhall parts that I would have to book it in to the dealer.

It took two weeks and a lot of phone calls for them to confirm fault and fit new module. They should have been able to diagnose that in less than an Hr!!

Regards,

Mike