MkV Golf GTi turbo problems systems
Discussion
Hi,
I'm wondering whether I have a problem with my turbo.
When I gun the car it doesn't feel as lively as it used to and it's accompanied by a whistling from the engine.
When I first had the car I distinctly remember that if you gunned it to, say 5,000rpm, and suddenly lifted off there would be a brief whistle from the engine, rather like a dump valve (which I assume it actually was); this no longer happens.
Having done some research I have established that the turbo has a diverter valve fitted, (which I presume is a posh word for a dump valve) and that these can be temperamental.
Does it sound like the DV may have gone given the above, or does it sound like something worse?
There are no warning lights/messages on the dash.
Thanks
Adrian.
I'm wondering whether I have a problem with my turbo.
When I gun the car it doesn't feel as lively as it used to and it's accompanied by a whistling from the engine.
When I first had the car I distinctly remember that if you gunned it to, say 5,000rpm, and suddenly lifted off there would be a brief whistle from the engine, rather like a dump valve (which I assume it actually was); this no longer happens.
Having done some research I have established that the turbo has a diverter valve fitted, (which I presume is a posh word for a dump valve) and that these can be temperamental.
Does it sound like the DV may have gone given the above, or does it sound like something worse?
There are no warning lights/messages on the dash.
Thanks
Adrian.
It does sound like the DV valve, unfortunately a very common failure.
Although it performs the same function as a dump valve, which dumps to atmosphere hence you get the whoosh sound it's called a diverter valve because it diverts the boost and recycles it hence why you don't get the woosh.
Although it performs the same function as a dump valve, which dumps to atmosphere hence you get the whoosh sound it's called a diverter valve because it diverts the boost and recycles it hence why you don't get the woosh.
Common failure.
Speaking as someone who has had to replace most bits that manage boost on his GTI, this is a cheap(ish), easy fix.
Swap it for a more robust piston-type valve, the best one being 'Revision D'.
Part number 06H 145 710 D. About 47 quid from VW IIRC.
Speaking as someone who has had to replace most bits that manage boost on his GTI, this is a cheap(ish), easy fix.
Swap it for a more robust piston-type valve, the best one being 'Revision D'.
Part number 06H 145 710 D. About 47 quid from VW IIRC.
Edited by FamilyDub on Wednesday 12th January 21:08
FamilyDub said:
Common failure.
Speaking as someone who has had to replace most bits that manage boost on his GTI, this is a cheap(ish), easy fix.
Swap it for a more robust piston-type valve, the best one being 'Revision D'.
Part number 06H 145 710 D. About 47 quid from VW IIRC.
Have you had many problems ? I'm looking to get a MK5 GtiSpeaking as someone who has had to replace most bits that manage boost on his GTI, this is a cheap(ish), easy fix.
Swap it for a more robust piston-type valve, the best one being 'Revision D'.
Part number 06H 145 710 D. About 47 quid from VW IIRC.
Edited by FamilyDub on Wednesday 12th January 21:08
RetroTed said:
FamilyDub said:
Common failure.
Speaking as someone who has had to replace most bits that manage boost on his GTI, this is a cheap(ish), easy fix.
Swap it for a more robust piston-type valve, the best one being 'Revision D'.
Part number 06H 145 710 D. About 47 quid from VW IIRC.
Have you had many problems ? I'm looking to get a MK5 GtiSpeaking as someone who has had to replace most bits that manage boost on his GTI, this is a cheap(ish), easy fix.
Swap it for a more robust piston-type valve, the best one being 'Revision D'.
Part number 06H 145 710 D. About 47 quid from VW IIRC.
Edited by FamilyDub on Wednesday 12th January 21:08
RetroTed said:
Have you had many problems ? I'm looking to get a MK5 Gti
^^ No real big problems; PCV and a couple of coil packs have failed over two years, that's all. I replaced the DV as a pre-emptive measure too.I'll be the first to admit that there will be faster/cheaper/sharper alternatives out there, but the MKV GTI is hard to beat as an [cliche alert!] all-rounder.
Big spec ('Nav, MFSW, Leather, DSG, 18") is good for resale, and it's worth finding out about Edition 30's, or the even rarer Pirelli Edition 30.
The website in my profile is an excellent resource for top tips, information and support.
That's great, thank you both. £47 seems reasonable if it gives me my power back! Is it a self fit job or best go to a dealer/indy?
Please excuse my ignornace, but what are coil packs? Are these part of the ignition system and what sysmptoms would these give when beginning to fail?
Cheers.
Please excuse my ignornace, but what are coil packs? Are these part of the ignition system and what sysmptoms would these give when beginning to fail?
Cheers.
aph202 said:
Is it a self fit job or best go to a dealer/indy?
It's a really awkward job on a standard GTI, because the DV is buried at the bottom of the engine on the offside, near the wheel well. Funny, because on the ED30, it's at the top of the engine and really easy to get to...If you have axle stands, you can DIY it in 15 mins.
Find a good indy in your area, it's really worth it. Saves the £££ and it's a much better experience.
aph202 said:
Please excuse my ignornace, but what are coil packs? Are these part of the ignition system and what sysmptoms would these give when beginning to fail?
Not the most technical explanation... They are part of the ignition process and 'hold' the spark plugs. A failed/failing coil pack will give a really rough idle, loss of power/boost and increased fuel consumption.
The common thing you will see on forums is 'if-one-fails-replace-them-all', but I've had two dealers and two indy's tell me this is not required.
Edited by FamilyDub on Thursday 13th January 09:00
To elaborate on above, coilpacs are pluged into each spark plug and create the High Voltage required to enable a spark plug to spark. In modern cars and bikes each spark plug basically has it's own coil whereas in older cars you used to have one coil which distributed the High Voltage to each park plug via a rotor arm a distributor.
Colonial said:
Don't bother with VW. Get a forge or an APR.
Lots of VW Internet experts reckon the latest rubber-less VW is good (and cheaper compared to third parties), pics herehttp://www.golfmk5.com/forums/showthread.php?t=752...
Colonial said:
Don't bother with VW. Get a forge or an APR.
I know people on stage 2+ ED30's/S3's (330bhp +) running the OEM piston-type DV... specifically 'revision d'.I'd say don't bother with the Forge, same function but it's at least double the price of the VW part.
Edited by FamilyDub on Thursday 13th January 13:44
When it comes to buying the parts try TPS as they supply dealers and can be a bit cheaper
http://www.thetradepartsspecialists.co.uk/
http://www.thetradepartsspecialists.co.uk/
Edited by cuprabob on Thursday 13th January 20:30
the-photographer said:
Colonial said:
Don't bother with VW. Get a forge or an APR.
Lots of VW Internet experts reckon the latest rubber-less VW is good (and cheaper compared to third parties), pics herehttp://www.golfmk5.com/forums/showthread.php?t=752...
When mine went it wasn't available - just the old shoddy version. Carry on.
FamilyDub said:
The common thing you will see on forums is 'if-one-fails-replace-them-all', but I've had two dealers and two indy's tell me this is not required.
Edited by FamilyDub on Thursday 13th January 09:00
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