Hi we have an 02 TDI octavia, every now and then it just looses power, we've been advised to change the air flow meter, it made no difference, you can start the car drive off and all is fine, 10 minutes into the trip, try and pass another car and theres no power, almost like the turbo's been turned off and it won't gain the power back until the car it switced off and restarted, then theres full power until it decides to loose power again, any advise would be appreciated.

Sounds like the vanes are sticking in the turbo.

That sounds just like my Superb 130PD, over 3 years ago, the dealer took weeks to get it sorted (12 weeks in garage I think), I got rid since it was the 3rd major problem I'd had with the car.

If the engine problem hadn't happend I'd probably still have the Superb now.

Current car (Saab) is a bit heavy on the juice so I'm considering another Skoda, maybe another Superb :eek: - well I thought the car itself was brilliant, dealer no so.

Vince

Hi we have an 02 TDI octavia, every now and then it just looses power, we've been advised to change the air flow meter, it made no difference, you can start the car drive off and all is fine, 10 minutes into the trip, try and pass another car and theres no power, almost like the turbo's been turned off and it won't gain the power back until the car it switced off and restarted, then theres full power until it decides to loose power again, any advise would be appreciated.

How many miles has it done?......

Sounds like sticky vanes in the turbo given the info so far.

72000 Thanks

Sticky vanes in Turbo, does that mean a new Turbo, or can the sticker vanes be cured?

Thanks

Official answer is a new turbo. However, they can be cleaned- someone in 'member services' offers this as a service.

The MAF (airflow meter) doesn't cause this sort of problem: I would agree it's probably sticky vanes, but you should check the N75 and the vacuum pipes to the VNT actuator too. If fact, you might get an improvement just by working the vanes back and forward.

have a look here:

TDIClub

Sounds very much like sticky vanes to me as well. Which tune of engine is it, because this issue is most common on the 110 (TDi).

110 tdi

I`ve had a similar problem recently, see my thread....Octavia 1.9tdi 110 bhp Elegance Estate, poss turbo problem? may give you some ideas?

probably sticky vanes. look up garrett vnt turbo on you tube for an animated display of how it works

cliver

Is a neurotic over-boost sensor not another possibility here?

It's happened to my 110TDI too - but only when wellying it!

Does it seem like there is less turbo lag when setting off? I noticed this when mine had the stuck vanes.

Turboturbot - it can be quite intermittant, mine would go a couple of weeks without doing it. With this problem is seems to go into limp mode at 3,000+rpm so it only tends to be when you welly it. There are two fault codes which are indicative of stuck turbo vanes, just can't remember what they are. Given the number of people it's happened to it's more likely to be the turbo than a sensor fault, but you never know.

Could it also be the N75 valve giving trouble?