V50 2.0d light throttle hesitation

[gmullins]

Hello All,

I've been reading the EGR valve thread and have noticed that two of the posters 'chris S40' an '7050man' have referred to a hesitation at a light, constant throttle in the 1800-2200 rpm region.

My 06 V50 2.0d, 47000 on the clock with FVSH also suffers from this problem which appears to be slowly getting more prominent over time.

The cars been on diagnostics at the mian dealer and shows no faults, and the induction hoses and vac pipes have been checked for leaks. An independent found an issue with the MAF which was subsequently replaced, however this has made no difference to the light throttle hesitation.

Does anyone have any suggestions as to what might be the cause and fix to this problem?


Many Thanks,

Gary

[PUFFDRAGON]

Hi Gary
Got same problem on my V50,did you ever solve it ?


Thanks Pete

[Simmy]

try cleaning the throttle body and map and maf sensors

[Baker3570]

Hi I have the same issue I've done the below and still the same

Replaced fuel filter and also cleaned out the housing
Cleaned egr (also blanked and unplugged)
Cleaned maf
Cleaned out throttle body and sensors
Fitted new fuel pressure sensor on the fuel rail
Replaced the fuel pressure regulator on the fuel pump

I've now been told its more likely to be an injector just waiting to get it booked In for an injector leak off test

[Gremlin682001]

Gents, had a similar but not exactly the same issue on my 05 2.0d. It may be worth checking all of the pipe work checked over for leaks, I won’t bore you with my saga but it was all down supposedly to a air leak in the air charger intake pipe and that’s caused all manner of issues.

[Baker3570]

Originally Posted by Gremlin682001

Gents, had a similar but not exactly the same issue on my 05 2.0d. It may be worth checking all of the pipe work checked over for leaks, I won’t bore you with my saga but it was all down supposedly to a air leak in the air charger intake pipe and that’s caused all manner of issues.

That's what I intend to do before going down the injector route don't suppose you have a picture for the layout of all the pipes like a parts catalogue break down?

[Gremlin682001]

Originally Posted by Baker3570

That's what I intend to do before going down the injector route don't suppose you have a picture for the layout of all the pipes like a parts catalogue break down?

Not at the min as I’m away from my home pc which has got the Vida on it, I can tell you which area you need to be looking in, at the back of the unbind is the egg on the right as your looking at it, to your left is the inter cooler and then from underneath, you’ll find the turbo Andy the inter cooler pipe, that’s one you need to check for leaks, it would be worth doing a smoke test which will certainly show up any leaks, does your turbo operate normally ?

[Baker3570]

Thanks will try look at this soon but yeah it drives OK turbo boosts as it should does however have a slight "whistle" type of noise on boost depending how harsh I accelerate

[Baker3570]

Just an update on mine I've just replaced the fuel pressure regulator on the high pressure fuel pump and it seems to have sorted it not 100% still niggly on tick over but drives alot better