Vivaro 1.9TDCi Poor Performance

[Itsme]

'56 plate Vauxhall Vivaro 1.9 TDCi

Very poor drivability, No power.
Goes into Limp mode if revved above 2800RPM.

DTC read with OPCOM - P1125 Boost Pressure Regulator Solenoid (0) Excessive flow detected.

Vacuum Pump appears to be working properly.

Solenoid/wastegate vacuum pipes appear to be in good order, wastegate is actuating.

Power to solenoid good.

Would be grateful for any suggestions.

Cheers

[davito1]

is likely to fail the valve or valve turbo jam because of carbon dirty

[Albanais]

'56 plate Vauxhall Vivaro 1.9 TDCi

Very poor drivability, No power.
Goes into Limp mode if revved above 2800RPM.

DTC read with OPCOM - P1125 Boost Pressure Regulator Solenoid (0) Excessive flow detected.

Vacuum Pump appears to be working properly.

Solenoid/wastegate vacuum pipes appear to be in good order, wastegate is actuating.

Power to solenoid good.

Would be grateful for any suggestions.

Cheers

Remoove the intercooler and wash it with carcher, in same time start the engine and hardly accelerate a couple of times. Pac every thing back and if it will not wwork again change the elektrovalve responsable for the turbo. 2 days ago I have had a similar problem, I allready fix it.
Hope it helps, cheers

[Itsme]

Remoove the intercooler and wash it with carcher, in same time start the engine and hardly accelerate a couple of times. Pac every thing back and if it will not wwork again change the elektrovalve responsable for the turbo. 2 days ago I have had a similar problem, I allready fix it.
Hope it helps, cheers

a bit reluctant to change the solenoid and waste the better part of 45 quid just for the sake of it but don't know how to make a definitive test on the valve.

[Meat-Head]

if the fault occurs stood still, can you 'tap off' the boost or put a pressure gauge on it?

[Albanais]

Do allready what I have sugested first then live the selenoid at the end. Make a continity test, if you have continuty its okay but some times the breather it can be clooged by the dust so make first the test, then try the selenoid.
Cheers

[Itsme]

is likely to fail the valve or valve turbo jam because of carbon dirty

Sorry missed your post.

Not sure if valve has failed as wastegate actuates as soon as engine starts as it should do I believe.

when you suggest "valve turbo jam because of carbon" exactly which bit do you mean?

[lagas]

you can check valve with vacum gauge and see it's works propertly or not.

[Itsme]

if the fault occurs stood still, can you 'tap off' the boost or put a pressure gauge on it?

Hi MeatHead

At standstill the engine will not rev above about 2800 rpm. Driving - I could push it faster and as said as soon as its about to spool up the turbo - Engine electronics light on and Limp mode.

Not got a boost guage to hand.

But I will pull off a pipe tomorrow and see if there is any pressure.

You suspecting Turbo?

[Itsme]

Do allready what I have sugested first then live the selenoid at the end. Make a continity test, if you have continuty its okay but some times the breather it can be clooged by the dust so make first the test, then try the selenoid.
Cheers
\
By continuity do you mean the solenoid electrics? If so have already checked power supply to valve and is ok.

Which breather pipe are you referring to?

[easytech]

I had the same thing going on with a 3.0Dci Movano.
Actually the railpressure was to low and gives a turbo pressure fault.
In my case it was the pump in the tank.
Try driving with opcom and watch the rail pressure.
Should be around 1350bar in my case it was +/-950bar.

[Meat-Head]

Hi MeatHead

You suspecting Turbo?

Sorry looking at ~~~~.

google vnt-15 look for 'gas turbine' in the result

NO IDEA what turbo it has

[Itsme]

you can check valve with vacum gauge and see it's works propertly or not.

Haven't got a vacuum guage either.

I'm an agricultural mechanic on a farm, not much call for boost and vacuum guages.

I was once told by a Deutz mechanic that had been called out to a farm machine that "without the proper tools to do a job you may as well go stand in the corner of the field an Pi** in the wind" I can agree with him at the moment.

[Itsme]

I had the same thing going on with a 3.0Dci Movano.
Actually the railpressure was to low and gives a turbo pressure fault.
In my case it was the pump in the tank.
Try driving with opcom and watch the rail pressure.
Should be around 1350bar in my case it was +/-950bar.

Will check that but it cannot be the pump in the tank - later Vivaro's don't have one.

[lagas]

Haven't got a vacuum guage either.

I'm an agricultural mechanic on a farm, not much call for boost and vacuum guages.

I was once told by a Deutz mechanic that had been called out to a farm machine that "without the proper tools to do a job you may as well go stand in the corner of the field an Pi** in the wind" I can agree with him at the moment.

I suggest that you check the vacuum with the tongue, mouth. Aslo need to check for leaks in vacuum system.

[Meat-Head]

Try not to use your mouth, as it can be enough vacum to collapse a lung or 2.

Oh that would mean one member less.

[lagas]

mouth is using for check's for leaks, when engine is turn off. Tongue for check vaccum. In working system vacucm is abaut -0,6 to 0,5 max

regards

[Itsme]

Hi just an update

As stated earlier vacuum is alright as the waste gate arm actuates as it should.

Swapped out Boost Pressure solenoid for known good one - no improvement.

Removed pipe from turbo inlet and lo and behold turbo is siezed solid.

Now looking for a supplier of reasonably priced replacement turbo.

Any suggestions?

[Meat-Head]

essexturbos midlandsturbos meat-cityturbos

[Itsme]

essexturbos midlandsturbos meat-cityturbos

thanks Meat-Head.

Got one on the way via local motor factors.

[Itsme]

mouth is using for check's for leaks, when engine is turn off. Tongue for check vaccum. In working system vacucm is abaut -0,6 to 0,5 max

regards

My mouth and tongue are reserved for things which are much more pleasurable than checking for vacuum.

[lagas]

My mouth and tongue are reserved for things which are much more pleasurable than checking for vacuum.

This is true. Good luck