Opel Vivaro 2013 2.0 TDCI 115 - Power drop - pressure sensor and turbo OK

Hello,
in my Vivaro suddenly lost power while driving. I plugged in the CLIP and the error DF569 - DEF2 came out, which means that the boost pressure is too low.
Although the car regained power twice more for several seconds, but now permanently does not turn above 3 thousand revolutions (even at a standstill).

In the CLIP while driving, unfortunately, the boost pressure is almost identical to the atmospheric pressure despite the fact that the recommended (set) boost pressure is much higher. So the conclusion that there is no boost completely.
The suspect is the boost pressure sensor - the question is whether a faulty boost pressure sensor can cause such an effect ?

I second question, is the boost pressure sensor on the M9R 630/692 engine located at the front on the intake manifold (not on the pipe) as in the attached photo ?


In the third photo I marked the pressure regulator, which I checked with the other car where it is also the same and it is working.

I did such a seized turbo. Less than 120tys on the odometer was.

decybel91 wrote:

I did such a seized turbo. Less than 120tys on the odometer it was.

Suggesting the turbocharger is seized?

Is the clutch switch working?

Clutch switch? This is a car with a połautomat (robot on the transmission changes gears and clutches the clutch). The car drives normally, changes gears.

And did you put on the turbocharger? Does the impeller spin slightly?

decybel91 wrote:

Are you putting on the turbocharger? Does the rotor spin slightly?

This is one thing.

You can take a vacuum measurement at the control valve.
You can still fasten the vacuum to the turbo briefly, the second operation will be to check in the parameters without vacuum.
Then measure the boost sensor signal on the running engine with different RPMs.

Added after 3 [minutes]:

Yes it's the boost sensor

I replaced the boost pressure sensor but nothing at all helped.
So I guess the only answer is the turbo died. In addition, I noticed that as I was now adding gas to the max, the car cranked up to about 3,000 rpm it immediately smelled burnt oil....

The car went to the workshop, which found that the turbo, took out gave to regenerate and put on and.... still the same !!!
Still does not turn in at more than about 3 thousand revs, no turbo. However, we noticed that the pipe going back to the turbo, at the intercooler is jammed ie as if the turbo is not getting air. Intercooler checked, unobstructed.

Could this be the fault of the throttle on the intake manifold, that for example jammed? From what to check?

p.s. what is this thickening on the return pipe to the turbo (in the photo I marked ) - filter ? is the direction of air flow as I drew with arrows?





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There is another exhaust gas pressure (vacuum) sensor so called solenoid valve (8200762162) which I have not checked, could it be the one giving the error message as in the first post I wrote? I attach a photo.

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What ailed the turbo that it was reconditioned?

Again , have you checked if there is vacuum at the turbo pear? Is the valve working?

decybel91 wrote:

What ailed the turbo that it was remanufactured?

It's generally hard to say, I haven't seen the turbo, the workshop blindly took it for remanufacturing although it was in working order.

Added after 39 [seconds]:

jurekk55 wrote:

Once again , have you checked if there is vacuum at the turbine pear? Valve operable?

Could you specify which valve ?

Turbine control valve and vacuum to it

Are you talking about valve number "1" in the attached diagram? If yes then checked listed.

.

Not the one on the right above.

Nr1 was defective ?

How much vacuum do you have.

The one marked in the blue circle in the picture below, I replaced and it is operational.
The one in the red circle no I replaced.
Pressure sensor on intake manifold replaced, working.
Remediated turbo working.

.

Check the hoses the rubber ones from the turbo to the engine. Aren't any of them delaminated.

I struggled with passat https://www.elektroda.pl/rtvforum/topic2224111-30.html

viper111 wrote:

We have noticed, however, that the pipe returning to the turbine, at the intercooler clamps up ie as if the turbine is not getting air. Intercooler checked, unobstructed.

When the control is not working, no such phenomenon occurs. Have you seen the turbo disassembled? You can still check if there is a loose air draft from the air filter to the turbo. Did you experience this problem immediately after installing the new turbo or after time? Generally it's a simple fault and the topic is dragging on for a second week.

And on the old and on the new turbo was this problem.
The new turbo is fully reconditioned.

viper111 wrote:

So I guess the only answer is the turbo died. In addition, I noticed that when I now added gas to the max, the car cranked up to about 3 thousand revs it immediately smells burnt oil...

One piece of information I still do not find, after overgassing you felt the stench of oil , in the exhaust or blowing.
The second you checked the intercooler if not flooded with oil.

Yes after overgassing (revs max 3k) at a standstill you can immediately smell burnt oil - that's how it was on the old turbine and that's how it is on the new remanufactured turbine.

Apparently the intercooler they checked to see if it was unobstructed and it is (but they didn't remove it just blew it with air I think).

Hello
How did you come out with this problem. I ask because it is currently the same thing in my car. We are now looking for the reason for the malfunction by replacing sensors etc.

They haven't diagnosed it yet.The car needed so I drove like this (stretches of 5 km a day) but it takes oil with this kind of driving.
Just tomorrow the car is supposed to go to the workshop again.
At my place the sensors are new, the turbo is new, the pipes are seemingly ok.I wonder if the throttle is by any chance jammed....????

Hello

Is there any progress in the battle with the bus? I have the same thing at my place, low boost pressure error, general lack of boost pressure, I have replaced the solenoid valve, pdpressure conoy, throttle valve, checked the intake leakage and vacuum before the solenoid valve, I still have a turbo left to remove. From the information on the web, it seems that the flap in the egr cooler may break off and block the impeller after the hot turbo strobe, so the turbo does not pump. I haven't disassembled my egr cooler, only from another bus (same as mine) and I don't really see which flap could break off there, there is one solidly mounted to the stem that directs it. With the removal of the turbine is a bit of a hassle, so maybe the author of the topic has clarified something with this fact?

Greetings

A piece of the exhaust manifold reinforcement breaks off, not the EGR cooler.

Hello have you solved the problem I have the same case that the error is the same and also the hose from the intercoler pulls inwards thank you in advance for your answer

decybel91 wrote:

A piece of the exhaust manifold reinforcement breaks off, not the EGR cooler.

And which piece breaks off?

I think I found the cause of the power drop, "pipe sucking" etc. !!!
As I wrote replacing the turbo didn't help anything and the pipes didn't hiss anywhere, showed no leaks. Finally I decided to look into the car myself and starting with checking the throttle. As I took off the throttle I noticed that the EGR cooler and more precisely the control of it (steel cable) is broken off (I attach photos). I suppose that this is the problem!


Now I have a question, because there are two types of EGR sidewalks, optically they differ only in the exit of one pipe of coolant circulation (I attach a photo) are they different in anything else ? I am thinking about welding this pipe from my old radiator.
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I have a question if you were able to solve the problem because I have identical symptoms .

Well yes, I solved the problem as I wrote in post #28 !