The electric current may have spiked the ECU or blown another circuit.

Read the HJ Frequent Questions about Small Claims Court. It's the garage's responsibility...

I pressume it was welded useing an electric welder Mig/Tig,if it has not been done correctly it has probably blown a numerous number of electric components and if its spiked the ECU then its probably US and requires replacing.The garage that did the work will have to pay they should carry insurance for this sort of problem if not they will have to pay out of their own pockets could be very expensive.I hope its nothing more that an ECU reset, but you can damage electronics simply by connecting a multi meter incorrectly imagine what damage can be done when you connect a welder.

Edited by Andy Bairsto on 08/11/2010 at 14:12

Are you sure it was just gas on its own,its not very good for car bodywork giving a very poor weak weld .Even so the garage has an obligation to put it right and not next week but now they should also have given you a courtesy car as well.

I agree comments on gas welding. My local garage uses gas welding only to brun off old exhaust systems..

Be aware: once you challenge them and find they have lied about anything, you need to be prepared to see evidence destroyed. Take photos of everything as a precaution.. before hand.

oh dear it sounds like you need to visit a specialist who can start to unravel the mess.

melted wiring loom sounds most likley, why on earth were thye gas welding ? can't belive they were not using a MIG and even with a MIg heat transfer can still burn wiring and seat belts. Worth unreeling the belts to see if they are intact !

I remeber having a car in for MOt after some welding and checked the belts and they just kept comming untill a melted end appeared.