406oc.co.uk

I have no idea, but you could try looking to see what it is on servicebox? If it's the vacuum pipe to the turbo wastegate, you've probably found your problem

That's the Turbo wastegate actuator (boost) solenoid. The vac pipe has rotted through and come off at the turbo end. You use your car sooooo much that the heat and oil has made it crap out earlier than usual.

Basically the wastegate is now wide open and dumping the boost (in fact it can't generate any boost now).

The HDi turbos don't fail. TBH supa (and I hate saying this) but a trip to the dealer may be in order - especially given the numpty diagnosis by the other guys in your area

supafrisk wrote:But wouldn't you hear some kind of whistle from the turbo with the pipe rotted through?
Just to add, the pipe doesn't look rotted, the end is pretty much clean, as in not frayed etc, just looks full of crud.
So basically best to try a new vac pipe first, yes?

The Vac pipe just plugs into a diaphram at the turbo so it's won't leave a "hole" as such for you to hear the turbo. In fact the turbo will still be spinning up albeit under atmospheric pressure a bit like a windmill

Not sure why it's full of crud but a straight replacement with new seems a good place to start. Did the pipe blow off itself?

supafrisk wrote: my grollies poking out the top of my combats

That's the way

All I know is that turbo failure just never seems to be an issue on HDi's but sensors, wires and piping does. It's weird how the air line is full of crud though. TBH if the car was up in the air then the Turbo stuff can be reached ok but on your drive/road with axle stands/ramps it's a nightmare.

my grollies poking out the top of my combats

Drool Drool, slobber mmmmm

supafrisk wrote:my grollies poking out the top of my combats

Your whats?

supafrisk wrote:brown with pastel blue piping with Kermit the Frog emblazoned on the front

Can't say I've ever seen a pair of those

Good luck down at Mell & Kim's - what happened to Gazza? you sacked him?

Sorry to hear about your Grandad, hope it goes as well as it can tomorrow with car and funeral.

supafrisk wrote:I booted it home (15 miles away) and not once did the turbo spool up
I had two mechanics from two separate garages take a look and they are both under the impression that the turbo is well and truly scrued and have quoted between £900-£1000 to fix it

sounds like the same problem my mother had with her 307 hdi viewtopic.php?f=1&t=4395&st=0&sk=t&sd=a&hilit=307 it turned out the turbo was fine but they changed the particle filter in the exhaust and something else which they didnt tell her about as she got into an arguement with them but it cost about £600

Well, as far as I know that's a first

Do you ever do oil flushes when you change the oil? it is possible that the turbo has suffered oil starvation but usually you get away with alot on these as the oil lines are nice an short (not prone to clogging).

If it sounds like that it may just be the fresh air intake pipe to the turbo has come off?

Don't have them replacing the turbo if there's nothing wrong with it - make sure they know your onto them and suspect something simple like a perished hose or vac line etc. first.

My oil is flushed every time.

supafrisk wrote:"Well we tested it in the garage and had it up to 1800 psi boost pressure"

how much thats not a turbo thats a jet engine

I'd like to be a fly on the wall when you take it back supa, you rip into the bastards!

I don't suppose they gave you the old turbo then
Might be worth asking for it on the off chance.
See if you can take one of the mechanics out for a drive to prove your point! (Ooer! )

I don't think there would be anything wrong with asking them to wack it on the ramps and show you the shiney new turbo for piece of mind.

When I use Forte flush and new oil the dipstick actually shows clean oil for about a week and then it starts getting black streaks in it, then darker, blacker etc.

It is very true actualy that an old turbo will whistle loudly because of the excessive clearance at the worn tips of the exhaust turbine. My turbo is extremely loud like an old lorry at the same time EVERY HDi I've heard does a whistle.

You know Supa, when a turbo dies it can fill the intercooler/pipes with oil. If they didn't get this all out it may take a few miles to clear it (not the best way to do it but hey). You could whip the large hose off before the air doser and have a look inside for excess oil - if it's minging then I'd get the dealer to flush the intercooler piping right from the turbo (as any good mechanic should) to prevent it throwing slugs of oil at the inlet manifold (diesels don't really mind this as they will use the oil as fuel but it's not best practice IMO).

Let us know how you get on sweet cheeks.

Welly.