GolfGTIforum.co.uk
Model specific boards => Golf mk5 => Topic started by: keyser on 10 August 2008, 13:51
-
Ok folks, not sure where to start. Before I begin I must state my mechanical knowledge is very poor so bear with me.
I have an 05 Standard GTi. About 5 months ago the top cover of the air intake unclipped itself and created a rattle in the engine when it vibrated. Only realised what the rattle was after about 2 weeks of searching. Clipped it back on. Anyway, remapped the engine in May with Torquetronix in Northern Ireland. Absolutely thrilled, a completely different car. At the beginning of July I opened the bonnet to put in windscreen fluid and notice the top of the air intake had come off again, this time it had completely unclipped itself and was just sitting in the engine bay. I clipped it back on (in hindsight I should have got a new one). About 2 weeks later I was driving on the motorway. Put the shoe down a bit and heard a sudden noice from the engine bay and a loss in power. Almost no turbo at all. Pulled in and noticed that the intake cover and come off and was nowhere to be seen.
I took it back to the remap guy who tested it and says the remap is fine but the turbo is only boosting at 0.4 bar. He checked the air intake. I had the car serviced yesterday ( out of warranty so a home job by a friend who is one of the chief mechanics at a vw dealer). He also ran diagnostic checks and said everything was fine. The car now drives almost as standard. Definately better than when I took it back to the remap guy but not what is was. But when I open the window and engage the turbo, the sound coming from it doesn't sound the same. Not sure how to describe it but a longer hiss and not as loud.
Really p***ed off at the moment. I'd really appreciate your thoughts. If anyone knows some vw specialists in Northern Ireland that would be a help.
-
....Possibly your Diverter Valve has blown, especially as your boost is down and loss of power is typical with the issue.
On a remapped GTI it's a wise preventative measure to change it to a Forge DV - The stock DV's are known to be a weak link, especially on VW builds which have the DV located near the turbo.
-
I'd agree with RR, sounds like either the DV is blown or you have a leak somewhere else. Joesgti had the issue with a leak and his sounded like your description. He too ran a rolling road at standard output 200bhp as he was remapped, but should have been much higher. :nerd:
-
Thanks fellas. I'll PM joesgti and see what he thinks.
-
DV all day long :smiley:
-
defo the dv :smiley:
-
Hey keyser,
I also have an out-of-warranty 05 GTI over here in NI. Can you recommend anyone to service it? Really don't want to take it back to the stealer...each time they had it there were issues with the work they did...tried 3 different VW dealers over here as well.. :-(
-
Hi ADW
The guy I took it to was a friend of a friend type of thing. I'll not mention any names but he is a mechanic at one of the dealers. He doesn't really make a practice of doing homers, more so a favour. To be honest though I was a bit disappointed that he didn't sort the turbo so I'm in the same position as you, looking for a good independent. Apparantly there is a good place in Coleraine that my brother mentioned. Don't have any names yet but will check this week and let you know if I find anything.
-
Buy yourself a new diverter anyway before you take it to be checked, give it to the tech and tell him to swap out the old one.
A new DV is less than £30 which will be less than the labour charge to swap it out again after you've realised the current one is fecked and you've been and bought one.
PN is 06F 145 710 G
Once you've changed the DV and ruled that out then things get a little more difficult. You'll be wanting to get hold of VAG-COM and checking N75 duty etc.
-
Is the diverter valve or dv known under any other name? I have rang about 4 different garages, including 2 vw dealers in Northern Ireland and none have heard of either.
-
Is the diverter valve or dv known under any other name? I have rang about 4 different garages, including 2 vw dealers in Northern Ireland and none have heard of either.
.... :shocked: That's plain stoooopid!! They simply don't deserve to represent VW. I would complain to VW UK (or equivalent in NI).
-
I remember having the same problem trying to tell the parts guy at vw that i wanted a dv for my mk4. Eventually I showed him what it was on a diagram. The official name turned out to be something like a bypass valve :undecided:
-
....Well, my VW dealer knows what I mean when I say Diverter Valve. I've even seen it called that on some VW documents.
-
Doesn't matter what it's called, I gave you the part number :rolleyes:
However as you are concerned, it's called a 'Cut Off Valve' - They still won't have a clue what you're talking about though.
-
Thanks for the PN Stu. I'll call at the dealers tomorrow and get it sorted.
-
It's actually called a Recirculating Valve - but the part no should have bought it up on ETKA.
Is there really any such thing as a "good" VW stealer? :angry:
-
It's actually called a Recirculating Valve - but the part no should have bought it up on ETKA.
They do call it a Cut Off Valve these days TT :nerd:
(http://www.fabia-vrs.com/dropzone/briskoda/CutOffVv.JPG)
Dunno why they have to keep changing the names of these things. :undecided:
-
The same thing happened to me after getting a Revo map,ran great for 2 days then total loss of power when on boost.first i thought it was the forge D.V but it was ok,then i booked into VW and they said it had a bad misfire on piston 2 so they changed no.2 injector and the fault was still there.After a week at the dealers it ended up being the ecu which was replaced under warranty.
-
The same thing happened to me after getting a Revo map,ran great for 2 days then total loss of power when on boost.first i thought it was the forge D.V but it was ok,then i booked into VW and they said it had a bad misfire on piston 2 so they changed no.2 injector and the fault was still there.After a week at the dealers it ended up being the ecu which was replaced under warranty.
....Have you gone back to a Revo remap?
Sounds as if you were lucky getting a new ECU under warranty when you had remapped the original one! :shocked:
Did the Revo tuner you used, firstly check your car for status/faults, then use a rolling-road and also finally drive it with a laptop attached?
-
hey, sorry for the late reply, ive been in ibiza for abit :cool:
my problem: took to awesome and put in on the rollers and only ran 200bhp, took it back to awesome afterwards for a diagnostics and found then my hoses around the dv had spit and was loosing 8psi of boost. so changed the hoses and ran it againg and its then ran 230bhp......still down :sad:. so back to awesome for diagnostics and vagcom had no faults and also no leaks under the hood but we did find that the car was not boosting past 4900rpm, so called up the re-map guys and they sent somebody up to have a check of the car, he took off the map and re-applyed a (in his words) "more aggressive map."
took the car out and its sorted, i knew it was mended once i hit the fast pedal!!!! :shocked: just need to get on the rollers now,
anybody facy a small do at awesome :wink:
-
hey, sorry for the late reply, ive been in ibiza for abit :cool:
Where's my glow stick then...and my stick of rock! :grin:
-
hey, sorry for the late reply, ive been in ibiza for abit :cool:
Where's my glow stick then...and my stick of rock! :grin:
stick of rocks in blackpool :rolleyes: and the glow sticks were left on the floor of amnesia :grin: :grin: sorry hurdy :tongue:
-
It's actually called a Recirculating Valve - but the part no should have bought it up on ETKA.
They do call it a Cut Off Valve these days TT :nerd:
(http://www.fabia-vrs.com/dropzone/briskoda/CutOffVv.JPG)
Dunno why they have to keep changing the names of these things. :undecided:
Ohh :embarassed:
Gizza copy of ETKA, go on mista, gizza copy! :grin:
Seriously, I really do need a copy. Where can you get them from? PM me, if it's a little <cough> dodgy <cough>
-
Tsk Tsk - Now I am sure you know that wouldn't be allowed TT :rolleyes:
-
The same thing happened to me after getting a Revo map,ran great for 2 days then total loss of power when on boost.first i thought it was the forge D.V but it was ok,then i booked into VW and they said it had a bad misfire on piston 2 so they changed no.2 injector and the fault was still there.After a week at the dealers it ended up being the ecu which was replaced under warranty.
....Have you gone back to a Revo remap?
Sounds as if you were lucky getting a new ECU under warranty when you had remapped the original one! :shocked:
Did the Revo tuner you used, firstly check your car for status/faults, then use a rolling-road and also finally drive it with a laptop attached?
RR, yes i was lucky to get a new ecu, but they could'nt prove the car had been mapped and i was'nt going to tell them.Also the Revo tuner checked the car for faults and it showed a fault on no.2 piston (misfire) and advised me to take it back to the dealer,anyway went back to the Revo tuner and told them the map damaged the ecu and they said the revo would'nt have damaged it and would i like them to put the map back on, this was'nt going to happen and asked for the money back because i am not paying £900 for a new ecu if it goes wrong again.