A4 1.8T Quattro Cab 2005. TURBO REPLACEMENT ?

dares_uk

dares_uk

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Hi


I have a A4 Cabriolet 2005 with 1.8T Quattro. 162bhp ??

My turbo is being replaced tomorrow,
I asked the garage, is there a upgrade turbo that could be fitted as my cars been re-mapped,
and as the turbo had been replaced last July just before i bought it,
There shouldnt be any reason for the turbo to go so soon. ?

Garage have said they couldnt find/source a turbo that would be a straight replacement,
any upgrade would need other new parts and modifications.

is this true?
I believe my turbo is currently a KO3. is there a better turbo to fit whilst its being done
that would cope with the remap better?

any other things to check apart from oil supply that may of caused the turbo to go ? etc.. ?


thanks for any help
 
Very unusual for a turbo to go that quickly unless it's been subject to oil starvation (clogged oil pickup strainer )or too much boost requested from a bad remap.
What symptoms you are experiencing? Smoke, loud spool up, no boost?
K03s from a 180bhp 1.8T would be the bolt on upgrade if you currently have the standard K03 fitted.
 
loud spooling noise, then boost leak, & lack of power.
car was re-mapped in feb, last turbo done last july.
my car standard should be 163bhp.
 
In that case I would be eliminating the boost leak before writting off the turbo.
 
when garage first inspected to diagnose, they stated colour of turbo was why the say the turbo,
looks like it had got or been getting extremely hot. more so than it should.
 
any one know some where in devon / exeter to get one of these?
as cars in the garage tomorrow, if not its gonna be a standard turbo again :s.
 
The Borg Wagner k03-073 IS a standard A4 B6 turbo (just on a different spec than yours). Any place that sells you the turbo on your car should also be able to sell you a k03-073.

This is the OE part number: 06B145703B.
 
well, got the car back from the garage today, and with a standard turbo, no other turbo (from their suppliers ) could be sourced.
apparently the k03s wouldnt fit/go straight on they said.

anyway,
its had a new turbo,
and a new boost valve,
my boost leak and mis fire have no gone,
but i still have one problem,

lack of power,
a few times on the way home i had my foot flat to the floor,
no power between 2k-3k in third?


for others with the same engine, when does your power/torque kick in ??

any suggestions for the garage to look at ?

they have checked intercooler for leaks,
checked the other boost valve and airflow sensors etc.. already.

thanks
 
The turbo is still quite loud too,
too much whoosh and not enough oomph.
 
i have a pic of my turbo that came off,
how can i uploads one to this site?
thanks
 
Hi dares,

I'm really sorry but I think the garage have ripped you off! I'm a mechanic and if there is a boost leak then that has to be eliminated before you would even consider replacing the turbo!

As a matter of interest how much did they charge inc parts for the whole job?
If you have asked them to replace the turbo then they've done as requested. If you asked them to diagnose the noise lack of power then they have failed and you should either ask for a refund or they need to fix the boost leak FOC. As they haven't fixed the fault.

The most common component to fail is a boost hose as they are made of rubber which fatigues over time with the heat from the engine etc!

An easy test (not a guaranteed diagnosis) would be to get someone to sit in the car and rev it hard to get the turbo to boost. Whilst he/she is doing so listen to areas where you might suspect the boost leak could be. Also squeeze the boost pipe just before the intake mani and get your friend to rev it up. If you can squeeze it whilst under boost then you've definitely got a leak!! If it blows up and you can't squeeze it then it should be holding boost. If if blows up but you can still squeeze it slightly then it means it's got a small boost leak of some sort.

It could be something as simple as a jubilee clip not done right enough to hold the boost pipes on etc.

On my old land rover discovery when I first got it it had no power and a real bad squeek it tuned out to the a boost pipe plonked on and the jubilee clips both weren't done up!

Good luck with fixing it and I woulddefinitely pursue the garage to sort the issue out!!
 
thanks for the reply.

heres a picture of the turbo they took off.

turbo.jpg



Car is going back in tomorrow,


They said,
when they got to the turbo, one bolt was cross threaded and tight,
the other two bolts were loose.
The gasket had also been fitted incorrectly and that had caused it to break.

The turbo was replaced in july 2013, a month before i bought it from Mark Richard Specialist Cars in wales.
They have been useless and i will be writing a separate post about them soon.
It took me 5 months to get a copy of the receipt for the turbo, which came from cats and carbs.

My car has been mapped, so it means any turbo warranty wouldn't be worth it,
but we shall see what the garage comes up with next,
i paid £755 for the turbo, boost valve, oil / filter / air filter to be done.
 
That bolt wasn't cross threaded! It's pretty typical for that bolt to get stuck due to its location and heat , 8-10 times they snap, I have 2-3 turbine housings here with the same snapped stud... Just get it drilled out and retapped if needed. Gasket was probably a cheap non oem one as you can't install it wrong..or if it was oem the loose studs would cause it blow very quickly..
 
Can you show a picture inside the exhaust side too see if there where any cracks etc.

If someone doesn't really have experience it's easy to go for the expensive items first as it eliminates them. As for them being unable to fit you a K03s is more likely because they didn't try to get hold of it or they won't warrant it as it's a non std fitment to your specific car.

I quite often have to push my parts supplier to search for things if I need/know they can do it as they are commission based so spending time looking for things doesn't get them a quick enough turn around on commission.

as for the turbo if there are any serious cracks or excessive play in the turbo then it's fubard but if there are only small cracks and small play then I don't see it actually failing.
 
audi upgrades
beachbuggy said:
That bolt wasn't cross threaded! It's pretty typical for that bolt to get stuck due to its location and heat , 8-10 times they snap, I have 2-3 turbine housings here with the same snapped stud... Just get it drilled out and retapped if needed. Gasket was probably a cheap non oem one as you can't install it wrong..or if it was oem the loose studs would cause it blow very quickly..
Click to expand...
:( I have this job to do on friday , any tips on taking the three bolts out without snapping them :eek:
 
Luck?!

You'll find it comes out easy to start then sticks, then you'll try to turn and it'll snap.. Maybe heat on the housing first it undo when hot..
 
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well, its in the garage again, and they have spent some time investigating,
they have removed boost pipes and rpessure tested them etc..
they have had live readings on the laptop for boost and fuel.
and they cant find what the problem is at the moment,
:(:audibash::keule:

Think there gonna check the timing etc.. today incase its slipped a tooth,
but there scratching their heads a bit now.
o_O
 
just been to the garage,
they have now checked the timing, and the cam timing etc.. and all is ok.
so.... not quite sure whats causing my problem.
any one have any suggestions ??
 
no one have any experience of anything like this?
nothing to suggest ?
ta
 
Sounds def like a boost leak.......the noise and lack of power sounds like it for sure to me.

Has the intercooler been checked for split hoses or even a split in the casing itself
 
they said they were gonna check the intercooler last week, so i assume so.
pressure tested all the pipe too.
 
All sorted now,
turns out it was a pin hole leak in one of the boost pipes,
they obviously did not pressurise the system enough to find it.

Running nice again now :)
 
yeh...
It woulda been good, if a boost pipe didnt pop off on the way home last night.... :p

Now just have two slow punctures to fix. :p
****** cursed car.
 
and again.... picked it up from the garage after work today, they were checking everything was on ok and tight.

got 10 minutes away and something didnt seem right, lost some power again. so pulled off the main road to turn back,
then went to pull away into 2nd and car was sluggish,
rest of the way back to the garage it was ok, had boost etc..
but on the way back twice, when pushing it a bit and under load,
it would boost, then change gear, keep revs high and its like the turbo stopped spinning / no boost.

any ideas... ?

left it with the garage AGAIN now, :p
 
That's all good that they've fixed it. How ever are they going to do anything to compensate you for having to wasting your money on buying a turbo you didn't need?

And that's not good to hear it's broken again
 
Limp mode... Sounds like it under or over boosting , putting Ecu into safe mode.. Ie it's not right!
 
thanks, its back in the garage already.
they took it for a short spin with laptop plugged in, said yes there is something there,
so left it with them now, there gonna do a longer run with it today,
and go up the hill i go on the way home, to test it under load.

ref the turbo,
said I asked about it,
they said it needed doing anyway,
said there was slight play in the shaft, both ways.
also the issue with broken nut & gasket which they put down to the way it was fitted.
(will make another thread about this and the garage soon)

can believe how much hassle this car has been though, its seriously bad luck with me and this car. :p
 
well, picked iy up again after work, drove it about 10 minutes or so, then turned round and took it back, AGAIN.
They said it was all ok, and it was just turbo lag.
TURBO LAG MY ***!
a few times, in 4th, 5th and 6th, had my foot flat to the floor and now power/boost.
6th at 2600rmp doing about 75 put fot down, and its on the floor, slowly creeps up to 80, just now power .
but other times its has boost, ??
:audibash:o_Oo_O:(

Any suggestions.
They said VCD didnt give any error etc..
its had a new turbo, new boost valve, now hose,
no boost leak atm...
all timing etc.. had been checked,
no errors thrown up.

??
 
I think a different garage for a second opinion......sound like cowboys
 
Before I took it back yesterday, they told me it was all ok, and it was down to turbo lag.
Do new turbo's needed cycling / bedding in ?

What should I expect from turbo lag? foot flat to the floor and .... ? for how long... ? etc..

It deffinatley seems different from previously and not right,
which is why i took it back.
Can any one reccomend a tuner / rolling road in the south west / devon ?

thanks
 
Good guys in the south I would use are VAS Works. Got a few friends that work there and lots that use their services.
 
well car was in the garage for another week whilst they investigated, and they found nothing wrong,
I had the car on a rolling road diagnostic today,
no fault codes but they said its dropping the boost, and suggested the garage check the recirc valve,
heres a greaph if any one else has any suggestions, ?

1505288_10152582367989613_6618979229626260858_n.jpg
 
Had the RR done in Plymouth, 4wd rolling road. AK Motorworx. Seemed like good guys, helpful, strapped car fully down etc.. etc..

Went back to original garage after prooving their was a fault. they replaced the recirc valve which AK advised it maybe, even though it had been previously tested, the replacement recirc valve solved the problem. It must of been sticking.

VWS in Exeter done all the work on the car.
 
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