2.0D no power at low rpm

[vaynah]

2004 S40 2.0D

So yesterday the car has developed an intermediate loss of power at low rpm. Happened twice now, coming to a complete stop in traffic, then when trying to accelerate the car just crawls forward with no response to rpm until 2k when the turbo kicks in, all good from there. So so far only happened in 1st gear.

Tried searching on the forum, a few people had same problem but nobody gave a definitive answer.

Any idea anyone?

[DannyG]

Mines started doing something similar, same engine on an 06 plate.

When you put your foot down do you hear alot of air escaping, or a whistling? Mine had a high pitch whistle very briefly and this has now developed to a more defined blasting of air noise, which suggest to me that I'm getting boost leak somewhere along the vacuum hoses, causing lots of turbo lag.

Might be something similar to you.

[gswede]

Have a look here. This thread is for the TCV itself, it could of course be the whirlgate/WG, controlled by pressure signal from the TCV that is coked up with grime making response time drop.
http://forums.swedespeed.com/showthr...0Diesel-engine

[vaynah]

Gave the car to my local garage. They just phoned me and said there was a small hole in one of the pipes, when engine was running bubbles were coming out. Hole fixed, they said to drive it and see if fault reoccurs.

Will report back

[vaynah]

Took the car yesterday evening. 2 short trips car seemed fine, I was over the moon. As I was pulling out of Asda car park, 1st gear was fine but from 2nd it lost all boost, putting it back to 1st didn't help either. it was just crawling forward. If I applied throttle it would jidder back and forward, so just let off throttle and in a few seconds it got a turbo boost and all back to normal.

So unfortunately fault still not found.
One of the forum members recommended to clean the boost sensor and check tsv for leaks. Will ask a garage to this over the weekend.

Attaching photo of where they found a hole and taped it.

[msh]

are you talking about the red tape on the clear plastic pipe
mark

[vaynah]

Yes that's one mark

[msh]

Hi
that's the fuel pipe from the filter to the high pressure pump
if it fails it will leave you in the sh@t ( broken down needing recovery
I would get it replaced asap and as the fuel system will need to be bleed after I would replace the fuel filter at the same time
the bad news is I enquired about the price of the pipe a couple of years ago due to a broken clip which I cable tied and was told approx. £50
mark

[vaynah]

After doing some more digging I am thinking it's the sticking throttle body.
Same problem described here: http://www.volvoforums.org.uk/showthread.php?t=209860

[vaynah]

Cleaning the throttle body did it for me.