Turbo problem

[pete99]

Why can I never find these thanks anyway I'm looking on the German ebay now, Thanks

WHY ? because when you dont want/need one- they are always cheap and are lots about..
And when you want/ need one --there are none available.
Its sods law !!

Before anyone says anything --I KNOW its a old post.
Reason I'm looking at it--is because today after having my audi A6 C5 1.9 sat on the drive for 3 weeks-- (only started and moved back and forth to let me get my van out) --i had to do a 50 mile return trip.

2 miles to motorway- then into non-van comfort. Boxed in by traffic- but eventually pulled out onto 'runway 3 '.
Coasted along at 70 for a few miles-and decided to blow the cobwebs away.
Up to 85 -and that was it -- 'like a limp ****' eager to go- but just couldn't rise to the occaision.
Dropped to 80 -and that was it . No 'Mojo' left.

Average speed camera area came up--so slowed to 50 . Had to drop into 4th to keep speed up.
9 miles to my destinatation- so just played it by ear.
Inside lane- looked at all instruments, (normal) listened for funny noises (none).
Got to destination- 15 mins later- back in car - and set off back home .
ALL normal- ran like a train (sort of-- no delays though).

My mind was going 20 to the dozen MAF etc - Turbo (hope not).

Acceleration/speed was normal (mach 1) .
Not run it since .

Anyone think its coz it has been 'stood' for a while--in all this crappy damp weather ?.

ps --sorry to hijack this thread in a belated sort of way .
Pete

[martin1810]

Best guess. It went into limp mode because of overboost and coked turbo vanes. When you switched it off, it reset. While it's like this give it some long hot runs just below the threshold of dropping into limp mode. If it drops into it a few times you will learn what revs to keep below. This might blow some carbon out and free the vanes a bit.

[pete99]

Best guess. It went into limp mode because of overboost and coked turbo vanes. When you switched it off, it reset. While it's like this give it some long hot runs just below the threshold of dropping into limp mode. If it drops into it a few times you will learn what revs to keep below. This might blow some carbon out and free the vanes a bit.

Thanks Martin-- I'll follow your advice.

Just gotta say though-- I only do around 3k or less in the car each year .
Bit sad really - but--it looks good sat on the drive ..
Dont quite like the thought of it sat on the drive too long though

[rob_bot]

Anyway, two days ago I had the whooshing of air that has been described here with the lack of power also. It happens about 1500-2000 RPM and has got louder and worse over the past few days (and 800 miles). It is constant when using the turbo not intermittent.

Now when I drive it (with the turbo in) I get the noise (very loud with the window open) and it hesitates to deliver the power - almost like it is cutting out for a brief moment. Then loads of grey/black smoke out of the back and then off. The smoke disappears then.

Anyway after reading this and a few other posts I tried to find the leak and the illusive L-pipe that always has the 4" split in it (where exactly is it!) as I am convinced it is an air leak.

I took off the inter cooler's 90 degree pipe (the small one at the top) to look at the pipes below and they all looked OK. However the inside of the pipe was pretty oily/sludgy and around the housing that it goes into (whatever that is but chrisvrscrx has some pictures of it in an earlier post), that was oily too. As too was the connection down at the front bottom.

As it is very loud I am assuming it is coming from a BIG pipe rather than the little vacuum hoses. Sound reasonable?

Anyone fixed theirs yet?

Found the problem shortly after as the bottom intercooler pipe. An earth strap (I think) had rubbed a hole in it which then got much larger much quicker causing the hiss to become a whoosh. £70 odd for the pipe from the dealers and all sorted.

Just in case anyone else has the same problem...

[Davob]

Hello,

I have a 05 passat estate 1.9tdi highline (auto) Today, I was driving the car and it was going great. Stopped off to go to the cash point, got back in the car and got the "Emissions Workshop" error on the dash and the car would go up to tick over and then stall. I tried to start it a few times and manged to get it into neutral and the car would rev without any power and loads of white smoke.

The AA came and he said that it was a dead turbo as there was oil coming up the dipstick when he took it out. Does this sound right? Anyway, it has been towed to a garage and they informed me over the phone it sounds like a turbo gone even though they had not looked at it. I am going to see them tomorrow and ask them to check the pipes and and the egr as suggested here.

If anyone could give me any other advice it would be much appreciated. Does it sound like the engine could be damaged also?

Cheers

[Davob]

Hello,

Now the garage where I have my car are saying that it is the EGR Valve. Could someone tell me if this sounds correct with this type of error as the price of this over here in Ireland is 300 euro

Thanks a mill for anyone that has any ideas

[passat 130 tdi]

Hello,

Now the garage where I have my car are saying that it is the EGR Valve. Could someone tell me if this sounds correct with this type of error as the price of this over here in Ireland is 300 euro

Thanks a mill for anyone that has any ideas

to eliminate the egr simply take the big air pipe off it make sure the flap inside is closed and then refit the big pipe , now , take off the vacuum pipe from the diaphram on top of the egr and blank off the hose . you will have a warning light on the dash but at least this way you can see if the egr is playing a part in the problem or not.

[Davob]

Hi,

Thanks for that, much appreciated. I will let the garage know.

Cheers

[rob_bot]

you will have a warning light on the dash

What warning light is that? I had mine disconnected for 50k and had no warning light (or obvious issues).
AFAIK all the EGR does is makes your engine eat its own poo to meet emissions so it doesn't need to be connected anyway.
Sure someone will be along to correct me/explain further if that is not the case..

[passat 130 tdi]

What warning light is that? I had mine disconnected for 50k and had no warning light (or obvious issues).
AFAIK all the EGR does is makes your engine eat its own poo to meet emissions so it doesn't need to be connected anyway.
Sure someone will be along to correct me/explain further if that is not the case..

post 2004 - 2005 ish models , the light comes on ( emissions warning )