NO Boost 2.0D

[kerrgreg]

Hi All,

My Euro3 2.0D had this issue at the weekend, looking for advise please!

Once warm, as I accelerate I heard no turbo spool nor dump release, and have no power.
There are no fault lights or warnings.
Full throttle resulted in little progress, as you would expect.
Car drove and sounded fine and strong, other than the obvious lack of turbo.
If i stopped the car and started it again, I had boost. which seems strange.

Around the end of June I cleaned up the throttle body for the first time using a guide much like this

Ive been looking around and found threads saying to clean up the throttle body again and that will help resolve the issue?

I am going to try that again, but am worried that it might not be the fix, however if it does, Id like to delete the EGR valve, its not clear for the Euro3 but can I just unplug and blank it. Or do I need to have it removed in the ECU?

[x DTR x]

Regarding blanking your egr valve on a euro 3, just blank it and unplug the light grey connector and should be fine.

[kerrgreg]

Thanks DTR

Ive cleaned up the inlet manifold today and it seems to be running better now.

Does the EGR not need a return signal with to the ECU?

And when blanking it, which end do you blank? I am tempted to completely remove it, but not sure what the ramifications of doing this would be.

[kerrgreg]

Some pictures of the intake system

Cleaned the Throttle body/MAF and stripped the EGR piping (some of it).



Some Gunk on the end of the brush after putting it into the intake manifold



Particles from the EGR system getting into the intake.



EGR Coal in my EGR valve

After cleaning car seems better now, we shall see if this resolves my turbo pressure issues.

[x DTR x]

Blank it at the egr where the grey connector you unplug is and that's it. I done this 2 yrs ago and no probs! Looking at the crap you are cleaning from yours, it can only do the car good so hope it sorts your problems out too

[SonyVaio]

Have your 2 x TCV's checked out (Turbo control valves).

[kerrgreg]

Thanks Sony,

Ive found this thread so know where that TCV is, where is the other TCV, I've been reading and know its at bottom of the engine.

Ive not had any issues since cleaning the MAF at the weekend and have been getting 55MPG on my 40mile round trip to and from work (160miles) this week.

[geoffco]

Originally Posted by kerrgreg

...where is the other TCV, I've been reading and know its at bottom of the engine...

The other one is down in the front right of the engine bay. Look down from the fuel filter / alternator and you'll spot it easily enough. I believe it's role is to actuate the opening / closing of the throttle body control flap.

Geoff

[kerrgreg]

So... All was well until this morning, where i had a hiccup and loss of power, I pulled over and all seemed ok, restarted the car and it was fine for the remaining 5miles to work

No fault lights again..

As such, Im ordering a VIDA and a TCV valve, the auto factors is saying they have part numbers one for turbo and one for egr/inlet.

Sony you were saying I can swap them is that the case? Im going to buy one at least and I can swap them over if the problem doesnt go away.

[kerrgreg]

So 500 miles later, and the fix was 2x TCV.

I bought the part from 2 different dealers @ £50

I fitted the first one, replacing the top right (when looking at front) and a few miles (about 50) later I got boost issues again, this time I could hear the turbo spooling lightly but not having any impact for driving. This is what lead me to fitting the one I removed to replace the other TCV which is located just next to the alternator, this solved the issue for a new more miles but again, I got the issues.

As such replaced the other Valve and it was ok for the next 300ish miles, both longer and short trips.