Hi,

We have a signum 2.2 dti and had nothing but problems, the spanner light comes on once you start driving and the car loses power (really embarrasing when going up hills) it has been happening for ages our local garage couldnt find a fault so we took it to vauxhall for a diagnostics test and these were the fault codes

P0638 THROTTLE CONTROL CIRCUIT NEGATIVE DEVIATION
P0638 ELECTRONIC THROTTLE SENSOR CIRCUIT HIGH INPUT
P0340 CAMSHAFT POSITION SENSOR CIRCUIT RANGE PERFORMANCE
P0380 GLOW DEVICE CIRCUIT LOW VOLTAGE

so after this they said it needed a replacement throttle body, new ecu fuel pump and no 1 glow plug replacing as you can imagine all this from a vauxhall dealer will cost more than the car is actually worth...

can anyone help by giving us any advise or any vauxhall specialist that could diagnose the problem that is causing it to loose speed any help will be very much appreciated i have been reading some forums and people have had similar problems and it has turned out to be a cheap solution!!

Many Thanks