Peugeot 407 2.0 hdi (136) SV 2005

[greenep]

I have just purchased the above car, it has done 57k miles and seems to idle fine. My only concern is that it seems massively underpowered. I didn't notice it in the test drive as it was about town and I didn't get a chance to hoof it, but when I drove it home it quickly became apparent. It's almost as if the turbo isn't kicking in at all!

My question is, what are the symptoms of a failing or failed turbo? Does the engine run like a pig or is it just underpowered like mine?

Any help advice appreciated?

Thanks.

 

[wotan]

If the blades have burnt off the exhaust side of the rotor, then there will be no turbo output, and the performance will be that or less, of a normally aspirated engine.
Does the car have a waste gate? if this is stuck open then boost pressure will be lost here too.
If you could buy or borrow a boost gauge, and pipe it temporrilary to the air outlet from the turbo, you could then observe what output the turbo is actually giving.

Wotan

 

[greenep]

Hi Woton, really appreciated your quick reply, showing my ignorance here but where would I find the waste gate if there is one?