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Author Topic: Boost leak  (Read 7069 times)

Offline Garth

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Boost leak
« on: February 17, 2010, 11:51:00 am »
Right then, after months of engine warning light going on and off whenever it felt like it (with no other symptons), the light went off the other day so I assumed that it had 'fixed' itself again. 2 days ago, the light came back on and this time, I lost power.

Now when accelerating, there is a very noticable drop in performance and it sounds like the diverter valve is continuously dumping the boost (exactly like when you lift off the accelerator pedal). Checked the engine with VCDS yesterday and I got the following faults logged:

001089 - EVAP Emission Control Sys: Incorrect Flow
               P0441 - 002 - Lower Limit Exceeded - MIL ON
             Freeze Frame:
                    Fault Status: 11100010
                    Fault Priority: 0
                    Fault Frequency: 15
                    Mileage: 101064 km
                    Time Indication: 0
                    Date: 2000.00.00
                    Time: 13:39:07

             Freeze Frame:
                    RPM: 827 /min
                    Load: 21.6 %
                    Speed: 0.0 km/h
                    Temperature: 72.0°C
                    Temperature: 12.0°C
                    Absolute Pres.: 1000.0 mbar
                    Voltage: 14.224 V

000665 - Boost Pressure Regulation: Control Range Not Reached
               P0299 - 002 - Lower Limit Exceeded
             Freeze Frame:
                    Fault Status: 01100010
                    Fault Priority: 0
                    Fault Frequency: 1
                    Mileage: 105899 km
                    Time Indication: 0
                    Date: 2000.00.00
                    Time: 18:48:01

             Freeze Frame:
                    RPM: 2538 /min
                    Load: 82.3 %
                    Speed: 103.0 km/h
                    Temperature: 84.0°C
                    Temperature: 9.0°C
                    Absolute Pres.: 990.0 mbar
                    Voltage: 14.351 V

It looks like I have a boost leak! Any ideas where to start looking? I did have problems with the standard dv on my old S3 (1.8T), but I don't know where it is on the 2.0T so I'm not sure what to lok at first.

Any suggestions would be appreciated.

Oh, and to anyone that says they told me not to ignore the engine warning light: yeah, yeah, you were right! But I DID try to get VW to look at it!!

Thanks
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Offline tony_danza

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Re: Boost leak
« Reply #1 on: February 17, 2010, 11:53:29 am »
Have you get an OEM diaphram DV? I'd start there.
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Offline Garth

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Re: Boost leak
« Reply #2 on: February 17, 2010, 12:00:57 pm »
Quote from: tony_danza on February 17, 2010, 11:53:29 am
Have you get an OEM diaphram DV? I'd start there.
Yes, and that was my thought as well. My question is, where is it on these engines? I haven't really looked yet, but I thought I'd get some ideas before I went out to look. It was too dark last night to start looking for problems.

Thanks
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Offline snapey

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Re: Boost leak
« Reply #3 on: February 17, 2010, 12:09:56 pm »
Its on the back of the turbo on the K03's. I'm pretty sure you can only get at it as well from under the car.
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Offline Garth

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Re: Boost leak
« Reply #4 on: February 17, 2010, 12:10:49 pm »
Quote from: snapey on February 17, 2010, 12:09:56 pm
Its on the back of the turbo on the K03's. I'm pretty sure you can only get at it as well from under the car.
That's what I feared. Thanks
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Offline tony_danza

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Re: Boost leak
« Reply #5 on: February 17, 2010, 12:14:27 pm »
If you've got one, I'd change it for the D-type piston version even if it isn't broken (which it most likely is) as it'll just go anyway.

£40-ish from the dealers I think?
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Offline snapey

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Re: Boost leak
« Reply #6 on: February 17, 2010, 12:14:38 pm »
No worries, I've got the same job to do this weekend anyway so gives me something to look forward to  :signLOL:
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Offline vRStu

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Re: Boost leak
« Reply #7 on: February 17, 2010, 12:19:18 pm »
As above, accessible from underneath and stick with the OEM one IMHO.
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Offline Garth

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Re: Boost leak
« Reply #8 on: February 17, 2010, 01:19:55 pm »
Thanks guys.

Anyone have the part number for the updated version? My ETKA is old and only has mk5's upto 05 (like mine).

 :drinking:
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Offline DanGB

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Re: Boost leak
« Reply #9 on: February 17, 2010, 03:39:13 pm »
06H 145 710 D

Retail price £50.52 I think. Ask for a discount.
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Offline Garth

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Re: Boost leak
« Reply #10 on: February 17, 2010, 03:43:51 pm »
Thanks Dan. Oh, and I always do  :happy2:
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Offline xxx_mojo_xxx

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Re: Boost leak
« Reply #11 on: February 17, 2010, 09:06:24 pm »
Quote from: vRStu on February 17, 2010, 12:19:18 pm
As above, accessible from underneath and stick with the OEM one IMHO.
What are your reasons for suggesting the OEM one? Apart from the price, why not the Forge one?
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Offline xxx_mojo_xxx

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Re: Boost leak
« Reply #12 on: February 17, 2010, 09:07:40 pm »
Quote from: tony_danza on February 17, 2010, 12:14:27 pm
If you've got one, I'd change it for the D-type piston version even if it isn't broken (which it most likely is) as it'll just go anyway.

£40-ish from the dealers I think?
If you're not in a rush I may end up with a spare DV valve up for grabs in the next week or so...
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Offline Cooper

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Re: Boost leak
« Reply #13 on: February 17, 2010, 09:32:56 pm »
I had the same thing a couple of weeks ago, dealer charged me £46 for the rev D piston type DV.  The most awkward part was getting the car jacked up high enough and on axle stands so that I had enough room to change it, wasn't hard once I got going with it. The tear in my old DV was about 2cm long and my car felt miles better than it had for ages once I got the new one on!
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Offline tony_danza

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Re: Boost leak
« Reply #14 on: February 17, 2010, 10:20:26 pm »
Quote from: xxx_mojo_xxx on February 17, 2010, 09:06:24 pm
Quote from: vRStu on February 17, 2010, 12:19:18 pm
As above, accessible from underneath and stick with the OEM one IMHO.
What are your reasons for suggesting the OEM one? Apart from the price, why not the Forge one?

The piston is electronic so no vacuum and it has been proven to work very well. The main thing is the price though.

K04s might benefit more from the Forge one though???
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