MK5 Golf GTI
All Things Mk5 => How to Guides / Troubleshooting => Topic started by: lukemk5gti on August 21, 2014, 09:27:38 am
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Let me start by saying I bought my car around 10 months before replacing DV. Since I bought the car with a torn DV and I hadn’t driven another GTI I didn’t even know it was gone because a 2L engine is still very powerful. Whenever I put the foot down I would hear a whistle which I was sure was my turbo but even though it pulled, it never pushed me to the back of the seat. After driving another GTI just last week I was reassured that something was definitely out of place so I said I’d tackle the DV. That loud whistle would have been the air escaping through the DV I imagine because I can’t hear it clearly anymore.
I can’t imagine how many people out there are driving around with torn DV’s completely unaware. My test – is it whistling loudly instead of pulling off & at around 2500rpm does it push you to the back of your chair or does it just lift a bit?
I ran my car through VCDS software and it came back with error code P0299 which is associated with low boost. I purchased the part from VW for €53 and fit it myself in around an hour.
Since I have a K03 my DV was located in behind the driver side wheel arch so this is how I replaced it.
Jack the car up as high as safely possible because you’re going to need a good bit of wiggle room. I then placed it on axle stands and chocked the wheels to be sure.
Remove the wheel and the plastic arch mud guards. There’s 2 of them and the one on the right hand side is also screwed onto the skid plate so you need to remove all of the screws at the front too.
The DV is located just inside the only bit of free space you can get to and I’ve circled it in the photos below.
(https://www.mk5golfgti.co.uk/forum/proxy.php?request=http%3A%2F%2Fdaz.co%2Fmedia%2Fn211%2Flukeoconnor2014%2FIMG_2212_zpsbab002ad.jpg&hash=a1083f67e2a9ec09dcac0744935564a57c1e3b5c)
(https://www.mk5golfgti.co.uk/forum/proxy.php?request=http%3A%2F%2Fdaz.co%2Fmedia%2Fn211%2Flukeoconnor2014%2FIMG_2214_zpse4d6213f.jpg&hash=1483eae6010dd6a900f6fa0a956fb2cf648b9ac6)
A good tip is to get a small torch and tape it to one of the pipes so it’s not in your way but it’s providing you with better lighting. Will save time in the long run.
Start by removing the electrical connection. Prize clip up with flathead screwdriver and remove. Please do this safely or you’ll tear the wires. Now cable tie it to something higher so it’s not in your way.
(https://www.mk5golfgti.co.uk/forum/proxy.php?request=http%3A%2F%2Fdaz.co%2Fmedia%2Fn211%2Flukeoconnor2014%2FIMG_2213_zps6062cc2c.jpg&hash=0651664493b91aac9a20d26420dd9813c8862cd1)
The 3 number bolts are held in place tight enough with threadlock – a glue put around bolts to keep them coming free from vibration so they require a bit more force to remove than a normal bolt would.
As long as you have the right tools all 3 bolts can be removed but you can’t tackle this with a bit set and a screwdriver. You really need the extension pieces, right angle adapter etc. for your socket set. The area is also very tight so you’re going to need the socket set to be quite small.
When you get the DV off inspect the rubber diaphragm for tears and what revision it might be. As you can see, mine was torn badly and a revision B.
(https://www.mk5golfgti.co.uk/forum/proxy.php?request=http%3A%2F%2Fdaz.co%2Fmedia%2Fn211%2Flukeoconnor2014%2FIMG_2215_zps8f739093.jpg&hash=863be291965756c40250b69e30d138c17cfab6eb)
(https://www.mk5golfgti.co.uk/forum/proxy.php?request=http%3A%2F%2Fdaz.co%2Fmedia%2Fn211%2Flukeoconnor2014%2FIMG_2216_zpsf33f685e.jpg&hash=b74df818fa3d56b8368b5108b663d353af321e2a)
I replaced mine with a revision G. For the reinstallation start with the bolt on the top right corner. You’re going to need some fresh threadlock here on the bolts to keep them from coming out. Add a small amount and hold the DV in place with the first bolt. Don’t fully tighten until you get the other 2 bolts in.
Now fully tighten all 3 bolts and reconnect.
While you have this panel removed why not check your windscreen washer tank for dirt, your light bulbs need replacing? or your suspension need a look at?
Last but absolutely not least – clean the crap out of your panels now! I forgot to take photos but at the point where your side skirt meets your mudguard there’s a crevice there that can hold a mug full of sand/grit/leaves etc. Remove all of this junk and anything else that may have gotten behind the mudguard over the years. If you’re feeling fancy why not get the pressure washer out?
Now start putting it all back together. If you’re not sure where some parts/screws went you can walk over to the passenger side and use it for reference.
I got back in my car and I have to say I was happier about the car than I was the day I bought it. The power was like nothing I’ve ever experienced. The power is insane and I never even knew anything was wrong. I also know what symptoms to look for in the future so it ever did happen again I can fix it with ease.
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:congrats: :congrats:
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I have just changed mine over the weekend and was in the same situation not knowing it was knackered but thinking something isn't quite right!
Pulls so much better now and how it should be :happy2:
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Decent guide, Will be following this on Saturday when I do my 'Big Service'!!
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Excellent write up :congrats:
Thank you :happy2:
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Thanks for this. Just ordered one so will come on handy
Sent from my iPhone using Tapatalk
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Im getting mine changed wednesday. I have exactly the same symptoms, power dropped off, whistling, and same error code. I can't wait to get it done. Mine is a 55 plate gti with the axx engine. I should be fitting the revision G right?
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Im getting mine changed wednesday. I have exactly the same symptoms, power dropped off, whistling, and same error code. I can't wait to get it done. Mine is a 55 plate gti with the axx engine. I should be fitting the revision G right?
Some people say D and others say G.
I'm a K03 and I fitted G.
Why not do it yourself? Save a lot of money and also if and dare I say when it goes again you can tackle it yourself!
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I just phoned the vw dealer and gave my engine code and vin to see what part the comouter would come up with. When I told him AXX he said yeah the G will fit. Then when I said my VIN he said that the computer was saying that my turbo should have the D. I double checked with him and am not confident really!
I should try doing it myself but I got a feeling it wont go smoothyl, jobs on the car dont usually when I do them!
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either D or G revisions will fit; I had both fitted to my mk6 Golf R which shares the 2.0 tfsi Engine.. rev G sounded better :happy2:
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Just an update on this....
It's been a month since I made the guide and chaned my dv.
I haven't scanned yet with vcds but I notice my boost going!
Could it be split again already?
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Just an update on this....
It's been a month since I made the guide and chaned my dv.
I haven't scanned yet with vcds but I notice my boost going!
Could it be split again already?
yes, k03's with tune can split diaphragm DV's for fun.
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My car is completely stock though and I'm not racing it like!
I bought it from Vw. You reckon they do warranty on parts?
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Why did you replace it?
Who replaced it?
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Why did you replace it?
Who replaced it?
I wrote the how to!!!!
I replaced it myself because I got the error code and could feel no boost.
Bought part from Vw and for myself.
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Why did you replace it?
Who replaced it?
I wrote the how to!!!!
I replaced it myself because I got the error code and could feel no boost.
Bought part from Vw and for myself.
Any error codes?
Visually checked the DV?
Yes, they can split VERY soon.
I VERY much doubt VW will give a replacement, definitely worth trying after inspecting though.
I've had a replacement online after 2 months of splitting on K03.
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Why did you replace it?
Who replaced it?
I wrote the how to!!!!
I replaced it myself because I got the error code and could feel no boost.
Bought part from Vw and for myself.
Any error codes?
Visually checked the DV?
Yes, they can split VERY soon.
I VERY much doubt VW will give a replacement, definitely worth trying after inspecting though.
I've had a replacement online after 2 months of splitting on K03.
Going to scan this evening to check....
I called into VW this morning and asked about it. I said I bought it from VW and installed it myself.
They said I can book it in and they would remove it and replace it free of charge as their policy states that labour is free if it breaks.
I'm pretty happy with this result so I'll scan tonight and ask them to replace if it's gone.
Reckon I should go for Rev D over Rev G this time?
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But if its not the dv at fault,you'll have to foot the repair bill.
I worked in vw for years and never heard of them doing a warranty repair on something that was not fitted in a dealer workshop.
Let us know how you get on!!
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But if its not the dv at fault,you'll have to foot the repair bill.
I worked in vw for years and never heard of them doing a warranty repair on something that was not fitted in a dealer workshop.
Let us know how you get on!!
I was actually worried about that. I'll scan tonight to check for boost leak and I'll also ask them if I have to pay if I'm in the wrong before I book it in!
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Did you find out if it had split again?
I ended up having the rev D put in mine and the car is running like a dream. Cant believe that I was pretty much running without the turbo. Power increase is brilliant. No comment on whether it would have been even better if a G was put in though!
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Did you find out if it had split again?
I ended up having the rev D put in mine and the car is running like a dream. Cant believe that I was pretty much running without the turbo. Power increase is brilliant. No comment on whether it would have been even better if a G was put in though!
I noticed today the cv boot on my driver side is weeping so I'm going to repair this and remove the dv all in one on Thursday as I'm off work.
Will update then. If it is split I'll ask vw specifically for a Rev d this time.
Wonder if I can drive it with the dv removed for a day whilst waiting?
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I've scanned my car countless times but there's no sign of error code for low boost.
I think my dv is split though?
Could I have split dv without error code?
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Just whip Dv back off and check it!
Great how to by the way although i personally found it easier to just do it from underneath without touching arch liner etc
Took me less than 15 mins to change mine few weeks ago!
Mine was torn to bits! Boosting hard now on Rev G :-)
Car is completely standard too so hopedully last a while, that was 1st time its ever been changed on my 57 plate Gti
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Yep same I only removed the front half of the arch. Mine was a Rev B so probably original, replaced mine with a GFB item - what a difference.
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Just whip Dv back off and check it!
Great how to by the way although i personally found it easier to just do it from underneath without touching arch liner etc
Took me less than 15 mins to change mine few weeks ago!
Mine was torn to bits! Boosting hard now on Rev G :-)
Car is completely standard too so hopedully last a while, that was 1st time its ever been changed on my 57 plate Gti
Actually thought about updating it as when I did it the second time I noticed I didn't need to remove the arch liner at all. It really doesn't make much of a difference.
I did get it off last time and no signs of damage!!!
I wonder if the damage was on the underside of the rubber. Tough to explain but you know the part of the rubber you can't see.
I might try disassemble and see what's the story
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Just whip Dv back off and check it!
Great how to by the way although i personally found it easier to just do it from underneath without touching arch liner etc
Took me less than 15 mins to change mine few weeks ago!
Mine was torn to bits! Boosting hard now on Rev G :-)
Car is completely standard too so hopedully last a while, that was 1st time its ever been changed on my 57 plate Gti
Actually thought about updating it as when I did it the second time I noticed I didn't need to remove the arch liner at all. It really doesn't make much of a difference.
I did get it off last time and no signs of damage!!!
I wonder if the damage was on the underside of the rubber. Tough to explain but you know the part of the rubber you can't see.
I might try disassemble and see what's the story
Let us know how you get on mate :-)
Im just going to treat mine as a service item and either check or replace every 12 months :happy2:
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Any update on this? :happy2:
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As I said above I did take it off after I had replaced it but no signs of wear.
Power is 100% gone though and I'm hearing the whistling and don't get any boost.
I actually have laser alignment booked in with VW later so I'm going to ask them to take a look and see if they'll honour their deal on the free labour on VW parts but only if they don't charge me if I'm wrong.
If not I had intended on getting one of the P3 boost gauges so I can read the boost off that and compare with other GTI's. I really just don't want to take it off again because I'll have to disassemble it too which may void warranty.
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Any update on this?
I replaced my DV for a G back around June/July and as others have stated gained an instant power and MPG increase :driver:, lately though it has felt down on power and the MPG is lower than normal so I assumed it had split, whipped the wheel off and pulled it out, no tears or rips so put it all back together tightened the bolts and boom instant power and MPG increase again but after only a week it is already starting to loose it again. I am going to take the bolts out and stick some heatproof Loctite on the bolts as I think they are coming loose. Hopefully this will solve the issue as I am booked in with R-Tech a week on Friday, and want the car to be 100% so it can make the best gains possible!
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Update:
I removed my revision G DV and no sign at all of any wear whatsoever, even after breaking the whole thing down!
I installed a rev D DV which is the pistion type and the power still is not 100% like it was the first time.
When I got my car back from the mechanic I asked him to remove it and take a look himself for a second opinion. I felt a bit more pull and less hiss so I asked what he had done. He told me an air line came loose which caused lack of boost. Now this is where my head is melted, he doesn't know where the air line is because it wasn't him that done it.
I'll be back with another update on this loose air line when I get through to him.
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A quick update on this. I bought the REV D as I was told by a dealer that my REV G might be leaking.
Unfortunately he lied and VW wouldn't refund my money so I'm stuck with an extra DV.
I have tried both the REV D and REV G but I have to say on a stock GTI I'm not noticing much of a difference. If I had the option I'd probably go for a REV G.
For those that don't know, D is a piston and a mechanical top and G is a rubber diaphragm that will seal better but can rip.
Here's my new REV D
(https://www.mk5golfgti.co.uk/forum/proxy.php?request=http%3A%2F%2Fdaz.co%2Fmedia%2Fn211%2Flukeoconnor2014%2F7F0A07FB-D464-4653-9B4F-3C8F4D622250_zpsbhrzttiv.jpg&hash=fb714916b82c33e7258c799abb76f54008d53278)
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Just thought id add my input, just bought a rev g as i thought my current dv had possibly failed, turns out that a rev c and g are from what i can see the same. No noticable difference so abit annoyed but hay ho.
(https://www.mk5golfgti.co.uk/forum/proxy.php?request=http%3A%2F%2Fdaz.co%2Fmedia%2Fazzwar%2FMobile_Uploads%2Fimage.jpg&hash=4bbeef8b7a5957adff33f89610465a7884a74ee2)
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I thought that the rubber on the Rev G was supposed to be stronger and no so prone to ripping. They say that the Rev D (piston design) doesn't seal as well and leaks boost pressure.
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Just thought id add my input, just bought a rev g as i thought my current dv had possibly failed, turns out that a rev c and g are from what i can see the same. No noticable difference so abit annoyed but hay ho.
(https://www.mk5golfgti.co.uk/forum/proxy.php?request=http%3A%2F%2Fdaz.co%2Fmedia%2Fazzwar%2FMobile_Uploads%2Fimage.jpg&hash=4bbeef8b7a5957adff33f89610465a7884a74ee2)
I've done the same. I actually bought my DV from Luke that started this thread. No noticeable different IMO but as you said 'hey ho!' Lol it's good to keep the maintenance up on the car.
Sent from my iPhone using Tapatalk
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Update:
I removed my revision G DV and no sign at all of any wear whatsoever, even after breaking the whole thing down!
I installed a rev D DV which is the pistion type and the power still is not 100% like it was the first time.
When I got my car back from the mechanic I asked him to remove it and take a look himself for a second opinion. I felt a bit more pull and less hiss so I asked what he had done. He told me an air line came loose which caused lack of boost. Now this is where my head is melted, he doesn't know where the air line is because it wasn't him that done it.
I'll be back with another update on this loose air line when I get through to him.
Hi matey
Any update on what the loose air line was? I'm intrigued!?
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Update 29/09/2016 - Installation of GFB DV+
Step 1 - Fit GFB DV+ to existing solenoid. Two second job but don't forget to use 5W-30 to oil up the parts when assembling!
(https://www.mk5golfgti.co.uk/forum/proxy.php?request=http%3A%2F%2Fdaz.co%2Fmedia%2Fn211%2Flukeoconnor2014%2F881d09d8-e6e9-48f0-b368-b5ecc28cfd5a_zps95hrlmz9.jpg&hash=912c8eb52c75db07e177b4102d195880c50b8dd9)
Step 2 - Photograph final assembled unit so people know you mean business
(https://www.mk5golfgti.co.uk/forum/proxy.php?request=http%3A%2F%2Fdaz.co%2Fmedia%2Fn211%2Flukeoconnor2014%2FIMG_2571_zpsk2owuxbj.jpg&hash=d38e8cb1b9d979bbb253ab7ca6a2b69911feab79)
Step 3 - Follow how to guide from the start - http://www.mk5golfgti.co.uk/forum/index.php?action=post;msg=893078;topic=87824.0 (http://www.mk5golfgti.co.uk/forum/index.php?action=post;msg=893078;topic=87824.0)
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Thanks for this. Another thing for the wish list!
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I just checked mine on ka04 (located top front right ) 3 x t30 torx bolt , takes 2 minutes! I had a rev d fitted
so just checked the condition of seal and plastic mounting area. I dropped a hex bit onto engine undertray!
easiest way to get it?
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I just checked mine on ka04 (located top front right ) 3 x t30 torx bolt , takes 2 minutes! I had a rev d fitted
so just checked the condition of seal and plastic mounting area. I dropped a hex bit onto engine undertray!
easiest way to get it?
One of these :happy2:
http://m.ebay.co.uk/itm/HEAVY-DUTY-MAGNETIC-TELESCOPIC-PICK-UP-TOOL-8LBS-3-6KG-LIFT-REACH-EXTENDING-PEN-/111356526458?nav=SEARCH
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Been meaning to get one of those for ages! Bought!
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Another gadget from the wrong side of ebay... I'll sleep on it... but this one could actually be beneficial !
I don't feel I'm getting enough hold on my boost on the d rev ,and the waste gate chatter does not sound all that.... I'm going to get
one of these after I sort out xenons! because I have ka04 it probably worth getting...
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I just checked mine on ka04 (located top front right ) 3 x t30 torx bolt , takes 2 minutes! I had a rev d fitted
so just checked the condition of seal and plastic mounting area. I dropped a hex bit onto engine undertray!
easiest way to get it?
One of these :happy2:
http://m.ebay.co.uk/itm/HEAVY-DUTY-MAGNETIC-TELESCOPIC-PICK-UP-TOOL-8LBS-3-6KG-LIFT-REACH-EXTENDING-PEN-/111356526458?nav=SEARCH
I have one of these with a light on the tip along with the magnet. Had to actually use it after I dropped a bolt myself!
To be completely honest I fell no night and day difference with the GFB but I'm glad I did it because I'll be keeping my car.
I wouldn't bother if I wasn't holding onto it for longer than a year or two (when the diaphragm might tear again) or if I was remapping.
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I just checked mine on ka04 (located top front right ) 3 x t30 torx bolt , takes 2 minutes! I had a rev d fitted
so just checked the condition of seal and plastic mounting area. I dropped a hex bit onto engine undertray!
easiest way to get it?
One of these :happy2:
http://m.ebay.co.uk/itm/HEAVY-DUTY-MAGNETIC-TELESCOPIC-PICK-UP-TOOL-8LBS-3-6KG-LIFT-REACH-EXTENDING-PEN-/111356526458?nav=SEARCH
I have one of these with a light on the tip along with the magnet. Had to actually use it after I dropped a bolt myself!
To be completely honest I fell no night and day difference with the GFB but I'm glad I did it because I'll be keeping my car.
I wouldn't bother if I wasn't holding onto it for longer than a year or two (when the diaphragm might tear again) or if I was remapping.
with light! - I want that one!
I get what you're saying but i don't have the G rev with diaphram. Rev D fitted and apparently it leaks boost from day one and gets worse with age. people have mentioned they notice a difference when changing to rev G or GFB + because it holds boost better (and sounds a bit better. haha)But I have not really heard any comparisons on Reg G vs DV+ - think its just the reliability- maybe this is why you're not noticing a massive difference - because you came from rev g . but the reliability of the GFB dv+ is well worth considering if you want to keep car for long period like you mention. (ignore all this if you came from piston dv haha)
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I just checked mine on ka04 (located top front right ) 3 x t30 torx bolt , takes 2 minutes! I had a rev d fitted
so just checked the condition of seal and plastic mounting area. I dropped a hex bit onto engine undertray!
easiest way to get it?
One of these :happy2:
http://m.ebay.co.uk/itm/HEAVY-DUTY-MAGNETIC-TELESCOPIC-PICK-UP-TOOL-8LBS-3-6KG-LIFT-REACH-EXTENDING-PEN-/111356526458?nav=SEARCH
I have one of these with a light on the tip along with the magnet. Had to actually use it after I dropped a bolt myself!
To be completely honest I fell no night and day difference with the GFB but I'm glad I did it because I'll be keeping my car.
I wouldn't bother if I wasn't holding onto it for longer than a year or two (when the diaphragm might tear again) or if I was remapping.
with light! - I want that one!
I get what you're saying but i don't have the G rev with diaphram. Rev D fitted and apparently it leaks boost from day one and gets worse with age. people have mentioned they notice a difference when changing to rev G or GFB + because it holds boost better (and sounds a bit better. haha)But I have not really heard any comparisons on Reg G vs DV+ - think its just the reliability- maybe this is why you're not noticing a massive difference - because you came from rev g . but the reliability of the GFB dv+ is well worth considering if you want to keep car for long period like you mention. (ignore all this if you came from piston dv haha)
Guess I'll ignore all of this since I installed the Rev D piston prior to the GFB :signLOL:
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Aaah... I forgot you posted a pic of it haha ... I should of re read the thread :signLOL:
... but still.... that rev d you put in looks brand new! :thinking:
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Here's a video from the guy who made it possible with the GFB DV+
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Sorry to bring this back up, but after looking at things to check on my car before considering a stage one, I saw the DV should be checked....well what do you know I get a whistling with the turbo which I'd always assumed was the turbo itself. Will get a GFB DV+ in the next couple of months and see about replacing it :)
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@probedb (http://www.mk5golfgti.co.uk/forum/index.php?action=profile;u=16610) did you manage to get one fitted ?
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@probedb (http://www.mk5golfgti.co.uk/forum/index.php?action=profile;u=16610) did you manage to get one fitted ?
Was gonna do it myself but seeing as the car is booked in to do the thermostat on Weds I'm getting them to do it :) I never put my foot down at all most of the time as the car simply doesn't get to operating temperature most of the time, I do have a whistle from the turbo so with both these things fixed I'm hoping I'll notice the difference :)
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@probedb (http://www.mk5golfgti.co.uk/forum/index.php?action=profile;u=16610) did you manage to get one fitted ?
Was gonna do it myself but seeing as the car is booked in to do the thermostat on Weds I'm getting them to do it :) I never put my foot down at all most of the time as the car simply doesn't get to operating temperature most of the time, I do have a whistle from the turbo so with both these things fixed I'm hoping I'll notice the difference :)
Yeah I had the dreaded stat fail last year and took two attempts to replace it as I was sold the wrong part so did the front panel new depo headlight timing belt and water pump and then did the stat the next weekend.
As long as they use all the parts in the GFB box you'll be fine :smiley:
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Yeah I had the dreaded stat fail last year and took two attempts to replace it as I was sold the wrong part so did the front panel new depo headlight timing belt and water pump and then did the stat the next weekend.
As long as they use all the parts in the GFB box you'll be fine :smiley:
Fingers crossed, they managed to snap a plastic part when putting everything back together, and then got sent the wrong part so I should finally have it back today.
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Well they decided that it wasn't the right one. Whether they just had a quick look as it'd already got a solenoid attached which I now realise was from a MK6 R. I'll take it off this week and then decide to either sell and get a rev G or put it on :)