volvo s40 2.0d 54 reg, turbo problem

[paulcodurham]

hi all, im having trouble with my car im looking for advice or if someone has had simular problems, here i go, the turbo doesnt boost properly, when you drive the car the turbo boosts but not as it should, if feels like its holding back and it works then stops for a second then kicks in then the car goes into limp mode sending message engine system service required and then the car sounds like a bag of ****, but then when turned off and restarted its fine untill i put my foot down,
i have had new turbo pipes fitted, also blanked off egr valve
also whe turbo is making quite a loud owl noise when reved up
please has anyone got any advice its been like this for afew month and starting to cost money, thanks all from paul

[Lee '71]

This is the sales thread (ie items to sell), you'd be better off and get some replies by reposting in the main section.

[paulcodurham]

im new to this lol ill have a look

[cumbrianmale]

Moved it for you

[copperknob]

It's not turbo fault you got its going into limp mode then when you switch off ignition it clears itself then drives ok..egr sticky ,fuel air leak take your pick get codes read and come back

[paulcodurham]

egr been blanked off, it was doing it befor blanking it off its not gone into limp mode for some time now im wondering if it could be the turbo boost sensors

[copperknob]

Could be I also had strange fault going into limp mode turned out to be glow plug relay .it was driven through water and shorted out kept bringing up tc valve could be anything get code read and come back

[paulcodurham]

had the car pluged in and its bringing up no codes. still have the problem with the turbo, when i drive it i cant take it over 2.5 thousand revs or the car goes into limp mode untill i switch it off and start it up again, the turbo is making a loud owl noise, checked all pipes for turbo and all seem fine also sometimes turbo stops working alltogether and sounds like the exhaust it blown, there is no smoke or anything, its got me baffled lol any suggestions? loike culd the wastgate be stuck or could it be a sensor?

[Cosmin L]

Originally Posted by paulcodurham

had the car pluged in and its bringing up no codes. still have the problem with the turbo, when i drive it i cant take it over 2.5 thousand revs or the car goes into limp mode untill i switch it off and start it up again, the turbo is making a loud owl noise, checked all pipes for turbo and all seem fine also sometimes turbo stops working alltogether and sounds like the exhaust it blown, there is no smoke or anything, its got me baffled lol any suggestions? loike culd the wastgate be stuck or could it be a sensor?

Hi Paul,

Had some similar problems with my 2.0D MY2005. My simptoms were: started the car and turbo was ok until i idled for more than 10-15 seconds and it cut out. If I restarted the car is was ok until idle. It was pretty consistent and there was no real difference in the sound of the car and it didnt go into limp mode. The problem turned out the be the ETM (Electronic Throttle Module), in other words the throttle admission valve. Maybe you should have a look at this.

Cheers,

[SonyVaio]

sounds like classic symptoms of either a rip/tear in a boost pipe or intercooler or pipe.