Vauxhall Signum engine management light - car cutting out

we have had the same problem with a signum and changed all the same parts that u have had changed and in the end it came down to the throttle position sensor and housing which has cured the problem. if you have any questions you can email me. good luck.

We have exactly the same problem. How was your problem rectified? Did you change the throttle position sensor? Thank you

i am having the same problems but also my car is exhausting ALOT of black smoke. i hav replaced my egr valve and air flow meter but no joy. is ure car deisil?

kallie can you let me know if youve found solution im having same proplem i know someone suggested changing throttle sensor and housing but according to vauxhall the 2.0 dti does not have this part were the 1.9/2.1 do please help if poss garage has no idea

I have had the same problem pretty much since buying the car 7 months ago.

It was serviced in october at a Now Vauxhall dealer at Heathrow, the computer diagnostics showed 11 vaults but they couldn't do anything about then cutting out/engine management light yet still charged me for the diagnostics!

I put up with it still, took it to another Now Vauxhall dealer last week (Richmond) they said they'd fixed it, charged me £100 said management light not on anymore. Next day the same problem is back, only this time it's not just town driving as before, but also when on the motorway. Light comes on, I drop it into neutral and coast until it goes off. Occasionally when town driving, the car will shunt as if it's breaking and I have to sit it out until the light goes off. Sometimes turning off engine and restarting solves it but it's always happening. One thing I noticed more recently, the first time I drive it each day it's fine, but then the next journey onwards it happens again.

At least now I know it's not just me - has anyone got any official word from Vauxhall?

I have had the same problem pretty much since buying the car 7 months ago.

It was serviced in october at a Now Vauxhall dealer at Heathrow, the computer diagnostics showed 11 vaults but they couldn't do anything about then cutting out/engine management light yet still charged me for the diagnostics!

I put up with it still, took it to another Now Vauxhall dealer last week (Richmond) they said they'd fixed it, charged me £100 said management light not on anymore. Next day the same problem is back, only this time it's not just town driving as before, but also when on the motorway. Light comes on, I drop it into neutral and coast until it goes off. Occasionally when town driving, the car will shunt as if it's breaking and I have to sit it out until the light goes off. Sometimes turning off engine and restarting solves it but it's always happening. One thing I noticed more recently, the first time I drive it each day it's fine, but then the next journey onwards it happens again.

At least now I know it's not just me - has anyone got any official word from Vauxhall?

Have you had a look at this similar problem: engine management light - car cutting out

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Well i am glad to hear this as i have a vauxhall signum 2.2dti elite. and it dose the same thing i have put it in to a vauxhall garage and after a diagnostic check it came back ok. i was told i had two vaccum pipes split and they repaired them. I was then told if it happens again bring it back but after handing over 100 quid and the car cutting out on me 3 times on the way home from the garage that was the last thing on my mind it is driving me nuts.it happens in town and on the motorway

I have the same problems, mine is a 2.2 petrol, done all the usuall things. New coil pack new O2 Sensors, cleaned out the egr valve and breather pipe. The only thing I have not tried is replacing the fuel regulator which is £130. The car chuggs in every gear aswell when pressing the accelerator. I can't believe that after all these years no one actually knows the cause of this problem. There must be someone out there who can help!

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guys on your signum car if u have a problem with the power cutting off and yr management ligts on u need to change plug sockets which is based on top of your engines .i had mine done recently and it works.thanks