Vacum issue D5 2004 165bhp

CLIVERALLY · May 23rd, 2018, 09:38

OK.
The message Engine service required appeared with the car loosing power.
It resets when switched off.
I have the generic code P2044.
I have checked for vac by removing the feed from the solonoid (small mounted on air box) to the engine mounts..the vac was present on idle and died about 12K revs.
I checked the vac to each engine mount..all ok
I have removed the tubo boost valve and cleaned it
I have cleaned the EGR
I have checked the turbo acuator under vac pressure and it works fine
I have checked fuse 11..all OK
So what am I missing here?
any help would be appreciated

aland · May 23rd, 2018, 10:23

Read this thread: https://www.volvoforums.org.uk/showthread.php?t=132443

Really need VIDA to see what it's doing. In my case it was seriously over-boosting because the VNT mechanism in the turbo was getting stuck under load, fixed with a s/h turbo.

But - you should check everything else mentioned in that thread first.

In my case, if I repeatedly booted it, got the message then reset, after 3 or 4 cycles the turbo/VNT was hot enough for the issue to go away for a while, and I then could boot it without going into limp mode. Yours may be similar.

CLIVERALLY · May 24th, 2018, 10:15

Turbo flaps sticking..fixed and back on the road

aland · May 24th, 2018, 10:17

Quote:

Originally Posted by CLIVERALLY

Turbo flaps sticking..fixed and back on the road

Flaps??
Do you mean the VNT - Variable Nozzle Turbo ?

May 23rd, 2018, 09:38	#1
CLIVERALLY Master Member Last Online: Apr 18th, 2024 23:55 Join Date: May 2010 Location: wetherby	Vacum issue D5 2004 165bhp OK. The message Engine service required appeared with the car loosing power. It resets when switched off. I have the generic code P2044. I have checked for vac by removing the feed from the solonoid (small mounted on air box) to the engine mounts..the vac was present on idle and died about 12K revs. I checked the vac to each engine mount..all ok I have removed the tubo boost valve and cleaned it I have cleaned the EGR I have checked the turbo acuator under vac pressure and it works fine I have checked fuse 11..all OK So what am I missing here? any help would be appreciated __________________ Clive "Lets turn up the juice and see what shakes loose"

May 23rd, 2018, 10:23	#2
aland Senior Member Last Online: Jan 17th, 2024 15:41 Join Date: Dec 2004 Location: Luton	Read this thread: https://www.volvoforums.org.uk/showthread.php?t=132443 Really need VIDA to see what it's doing. In my case it was seriously over-boosting because the VNT mechanism in the turbo was getting stuck under load, fixed with a s/h turbo. But - you should check everything else mentioned in that thread first. In my case, if I repeatedly booted it, got the message then reset, after 3 or 4 cycles the turbo/VNT was hot enough for the issue to go away for a while, and I then could boot it without going into limp mode. Yours may be similar. __________________ 2004 V70R 2008 XC90 D5. 2011 C30 2.0 Past: V70 D5, 855 T5, 940, V40 T4, S40

May 24th, 2018, 10:15	#3
CLIVERALLY Master Member Last Online: Apr 18th, 2024 23:55 Join Date: May 2010 Location: wetherby	Turbo flaps sticking..fixed and back on the road __________________ Clive "Lets turn up the juice and see what shakes loose"

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