timrud

My car has been running a bit funny for the past few weeks. Basically I put it under any load over say 2000rpm it hesitates, feels down on power and smokes more than Bob Marley. Then it goes into limp mode, you turn car off and it is fine.

I'm now thinking its the veins on the VVT. Going to have a go at cleaning them out at the weekend, any tips on doing this? BKD engine BTW

cossiejay

i had this on my golf tdi and it was the egr valve

timrud

Was it blocked up?

When it had its mot I got an advisory saying slight oil leak on the turbo. I'm thinking that might be contributing?

I shall check the EGR valve before attacking the turbo I think!

Did it bring the management light on? Mine says "boost out of regulation" or something like that.

Seriously pissing me off TBH. Smoke is embarrasing and I have to drive like a grandad to stop it going into gimp mode. And any road over 60mph is a no no.

Gazzonator

iTrader: (9)

It could be either the EGR valve or the vanes sticking in the turbo.

Try removing the EGR valve and putting a bit of thin metal (coke can or similar and bolt the valve back on and see if it cures it.

Also check each and every little vacuum hose under the bonnet as if even just one has popped off or split, it can cause a lack of power.

You can check to see whether the vanes in the turbo are sticking by putting a pressure/vacuum pump on the actuator and operate the pump. The rod of the actuator should move easily and smoothly. If it appears stiff or juddery, there's a good chance the vanes are sooted up and sticking.

DazC

iTrader: (1)

Blank the gas flow from the EGR to the inlet manifold, or from the exhaust manifold to the EGR valve.

EGR causes no end of grief on diesels.

66doug

Had exact same problem on my 1.9tdi passat and it was a blocked pollen filter.

as355f1

now i find that amazing !!!!!!!!!!!!!

as355f1

try unplugging the airmass and blast it up the road just to rule it out, does sound like an egr or turbo problem though

Barry_GTi

HAHAHAHAHAHAAHAHAHAHAHAHAHHAHAHAHAHAHA

Agree with others, could be a boost leak, EGR or possibly Vanes on Turbo.

PeterRST

iTrader: (1)

Be very careful here though! Those VW engines recirculate quite a lot. I used a piece of tin can once and it blew straight through. Was just pure luck that it didn't end up in the engine but got tangled up in the EGR. So I'd recommend to use at least 1 mm strong metal to be on the save side.

Christian and Beccy

iTrader: (14)

Now that HAS to go down in history as one of the all-time diagnostic FAILS.

Csm

As Frank Carson would say............

It's the way i tell um

timrud

Already changed the MAF (or whatever it is called on these).

Will report back on my findings later. It is deffo getting progressivly worse though. More smoke and less performance

PeterRST

iTrader: (1)

DPF blocked?

Any fault codes?

I had a 2006 1.9 TDI PD with a worn out camshaft and similar symptoms.

timrud

I don't believe the 140bhp bkd has a dpf? I could well be wrong though!

The fault is boost out of regulation.

First started going into limp mode on the same stretch of uphill motorway. Now just doing it more and more often.