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Hello everybody.

I have a Volvo V50, (M/Mw76/V50), 1.6d, 80KW, year 2006, engine D4164T.
I have some problems with the engine.

The faults codes are:
ECM - 68BD Intercooler bypass throttle - Faulty signal
ECM - 9150 Inlet control valve - Signal too low
ECM - 6890 Intercooler bypass throttle - Signal too low
ECM - 9120 Inlet control valve - Signal missing
ECM - 688D Intercooler bypass throttle - Signal missing

The full body of this parts -Bypass air control valve + Throttle valve control unit - are new.
First times when the faults codes starts, the Volvo dealer check the wires, ground connections, fuses... and after that recommend changing the whole part.
After they change it, the fault codes come again. They change again the whole part in warranty, but again the same fault codes. At that moment they tell me that they believe is the ECU.
I send the ECU to BBA England to be check and they tell me that the ECU is fine.
Back to Volvo, they say that is the ECU.
Contact again the BBA England, they check again the data and the ECU is fine.
I buy Power Probe Short Finder ECT2000 and it never shows a broken wire.
I make measurements of the voltage/resistance of the wires of the valves and I have this values:

Measurements of voltage:

For the Bypass air control valve -- A14.4
pin #1 - 4.96 V
#2 – no wire
#3 - 3.2 V
#4 - 12.15 V
#5 - 0V
#6 - 0V

For the Throttle valve control unit A20.1
pin #1 - 4.96 V
#2 – no wire
#3 - 12.15 V
#4 - 2.77 V
#5 - 0V
#6 - 0V

Measurements of resistance:

For the Bypass air control valve -- A14.4
pin #1 - 1 ohm
#2 – no wire
#3 - 1 ohm
#4 - 1 ohm
#5 - 0.7 ohm
#6 - 1 ohm

For the Throttle valve control unit A20.1
pin #1 - 1 ohm
#2 – no wire
#3 - 1 ohm
#4 - 1 ohm
#5 - 0.7 ohm
#6 - 1 ohm

The engine is tremble like hell, but not slow /rare, more like shivering. And when it stop/shut off, it doing a post-combustion... is still rotate a few more time and finally stop with a very strong tremor / vibration. The acceleration is slow, it's feeling a lack of power and when I go over 3000-4000 r/min get dark smoke on the pipe.
I was to a garage and try to force the regeneration of the Particle filter but when start to accelerate, the engine start to move as if it had broken the engine supports and the whole car start to tremble so they stop the regeneration

For the reason that is the same engine as the Peugeot, I thought to write here, maybe happened to others also.
If anyone has any ideas is more than welcome.
Thank you.
 
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