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[Tank]

Need help.Went with a friend to pick up a 1.3 CDTI  Vauxhall Astra Diesel estate on a 55 plate.All was fine until after about 20 mile on the motorway,when my friend went to accelerate for overtaking,the engine lost power and the engine electrics light came on(CAR WITH A SPANNER).She stopped the car,re-started it and it was fine then for about another 100 mile then it happened 3-4 times in about 20-30 mile,always when trying to accelerate for overtaking,always restarting and pulling away etc with no problem.Pulled in at services and called RAC.Course they found nothing,and we then drove home following the A roads which were busy but it never happened again,but she was hardly into 5th  or 6 th gear.Any suggestions please?? Thanks in advance for any help given

[greggmo]

it sounds like it is going in to some kind of limp mode. just a guess bro.

[Tank]

Yes mate you did say,but just thought it worth trying here too,RAC guy found jack poo

[Mike Pavelin]

Isn't it still in warranty on a 55 plate?

[Jonny Jeep]

If the light came on there should be a code stored on the computer. I'd have expected the RAC man to have plugged in a code reader. If he didn't I'd get it read somewhere as it could save a lot of time and money trying to guess at things.

[Dave69]

faulty ecu will be the answer from the garage and they will charge you for just trying it. get them to try one from another car before you splash out several hundred pounds. it sounds more like the ignition module which sometimes doesn't store the fault even though the check engine light gets shown. With the check engine light going out comming off and on might be a problem with the vauxhal spanner boys.  Al i can say is good luck and dont buy another vauxhall

[captain cavalier]

Had this happen on an 06 Saab 1.9 diesel turbo

If this is same engine (I know the 06 model is) first it was a software problem then it happened again and it was the egr valve sticking

First it was only occassionaly then it got worse

[captain cavalier]

Sorry forgot to say

If you turn thte engine off and restart it it limp home mode will not come on for a short while

[Bubba]

its turbo sensor problem andy p had sact same problem on his took the dealers a few atempts to sort dealers will know the problem its a known thing

[Tank]

aThanks so far for the answers.RAC man did run diagnostics and no fault codes came up. Local garage trying to say a gearbox fauly quoting 100`s but even i would not have said that,i was guessing electrical or fuel,so thanks to you seem to have narrowed it right down.Will check about the warranty thing too,but its just over 3 years old so dont think it covered.Cheers guys

[Panic mechanic!]

I was wondering if this lack of power is just when you are in the car tank? does it improve when you get out?  :evil:  

[Tank]

Alas i wasnt driving the said car in question as i was in another vehicle thankfully