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Mk5 General Area / Re: How many have been effected by headliner sagging?
« Last post by jacksosi on Today at 03:50:08 pm »Haha well played sir, looking good!
How easy was the rear?
Super easy, it comes with step by step instructions but in short...pop off the cover, release two clips, pop off the electrical connection, slot the removed section into the new frame, pop it back on.
The only tricky part is trying to slot the new combined piece back into the original opening, but a few mins of jiggling and I got it, probably 10 mins in total.
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Mk5 General Area / Re: How many have been effected by headliner sagging?
« Last post by Jons1001 on Today at 03:42:13 pm »Haha well played sir, looking good!
How easy was the rear?
How easy was the rear?
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Mk5 General Area / Re: How many have been effected by headliner sagging?
« Last post by jacksosi on Today at 03:33:43 pm »Looks like I've beaten @Jons1001 to it 
Overall quite easy to do...it would have probably only taken me an hour to do both BUT I couldn't get the sunglasses holder back in no matter how long I tried. Eventually I ended up breaking the tabs, but resolved that by adding in a couple of screws.
I think it looks good, and although expensive at £170 for two bits of plastic
, it's still better than having to fork out £500+ for a retrim 


Overall quite easy to do...it would have probably only taken me an hour to do both BUT I couldn't get the sunglasses holder back in no matter how long I tried. Eventually I ended up breaking the tabs, but resolved that by adding in a couple of screws.
I think it looks good, and although expensive at £170 for two bits of plastic
, it's still better than having to fork out £500+ for a retrim 

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How to Guides / Troubleshooting / Diagnosing Vacuum Leak Locations - Not PCV/Rear Breather
« Last post by dadawg22 on Yesterday at 04:51:31 am »Hello all, recently I've been battling a vacuum leak issue with my 2007 FSI model MK5 GTI. The engine code thrown up was the System Bank Too Lean that led me to suspect the PCV at first, but after replacing it and the rear breather (huge PITA) with the latest iteration parts I still hear a loud hissing noise when the engine runs, along with very poor idling and near stalling. There's also a heavy smell of unburnt fuel in the cabin, likely from the massive leak.
Was wondering what other common locations might be the cause of the leakage - don't have the equipment for a smoke test but worst case I could round up a couple smoker buddies and let them have a rip.
I've heard that the brake booster is a common suspect, but upon my initial inspection it seemed to be alright (but I'll check it again when the weather gets above -30). Next two suspects are the diverter valve or the intercooler, but those would throw up boost related engine codes which I haven't yet seen. I've also heard that the vacuum pump seal may fail, but there isn't noticeable oil below it. Worst case is a blown rear main seal, but I don't see any engine oil leakage when it's parked, and the engine still performs well when under load with boost noticeably kicking in around what feels like 2.7-3k+ RPMs. There's also some pretty significant rev hang, and the throttle control is rough with the engine sometimes revving itself quite high without any input while the vehicle is still.
Apologies for the huge post, but I want to make this comprehensive for anyone having similar issues in the future. I'd really appreciate any advice on diagnosing this, I love this car and want to bring her back to her best state.
Was wondering what other common locations might be the cause of the leakage - don't have the equipment for a smoke test but worst case I could round up a couple smoker buddies and let them have a rip.
I've heard that the brake booster is a common suspect, but upon my initial inspection it seemed to be alright (but I'll check it again when the weather gets above -30). Next two suspects are the diverter valve or the intercooler, but those would throw up boost related engine codes which I haven't yet seen. I've also heard that the vacuum pump seal may fail, but there isn't noticeable oil below it. Worst case is a blown rear main seal, but I don't see any engine oil leakage when it's parked, and the engine still performs well when under load with boost noticeably kicking in around what feels like 2.7-3k+ RPMs. There's also some pretty significant rev hang, and the throttle control is rough with the engine sometimes revving itself quite high without any input while the vehicle is still.
Apologies for the huge post, but I want to make this comprehensive for anyone having similar issues in the future. I'd really appreciate any advice on diagnosing this, I love this car and want to bring her back to her best state.
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New Member Intro's / GoAzBox - New member from NL
« Last post by GoAzBox on January 22, 2026, 09:53:16 pm »Hi guys 'n gals,
Digitally I'm GoAzBox but in the real world my name is Jasper. I'm from the Netherlands and own a 2004 MK5 1.6 FSI and a 2012 Passat 1.6TDI.
Hope to be able to contribute and learn from everyone. I'm an experienced cluster swapper and have some experience in ECU tuning for ME7, MED9 EDC15 and EDC16 ECU's. Own a HEX-NET VCDS, Abrites AVDI and multiple other tools. Also working on a one-in-all tool for immobilizer matching and cluster swapping for MKIV, MKV and MKIV (who knows what will come after)
Digitally I'm GoAzBox but in the real world my name is Jasper. I'm from the Netherlands and own a 2004 MK5 1.6 FSI and a 2012 Passat 1.6TDI.
Hope to be able to contribute and learn from everyone. I'm an experienced cluster swapper and have some experience in ECU tuning for ME7, MED9 EDC15 and EDC16 ECU's. Own a HEX-NET VCDS, Abrites AVDI and multiple other tools. Also working on a one-in-all tool for immobilizer matching and cluster swapping for MKIV, MKV and MKIV (who knows what will come after)
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Mk5 General Area / Re: clutch pedal stuck half way/not returning
« Last post by GVK on January 21, 2026, 10:24:42 am »There's a shim kit you can can get for the gearbox that sometimes fixes this.
Was a thread on here about it. https://www.mk5golfgti.co.uk/forum/index.php?topic=121344.0
Was a thread on here about it. https://www.mk5golfgti.co.uk/forum/index.php?topic=121344.0
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Mk5 General Area / Re: What did you and your MKV do today?
« Last post by mjmallia on January 20, 2026, 05:53:02 pm »Acquired parts and loom made for fitting a washer fluid level sensor. I still have to tape and sleeve it, but good to go
Need to find some time to fit and code in
I have also bought the larger 5.5 litre reservoir to replace the current 3 litre one

UPDATE: Loom is now wrapped and shielded
Just waiting on the eBay 5.5litre reservoir

Need to find some time to fit and code in
I have also bought the larger 5.5 litre reservoir to replace the current 3 litre one

UPDATE: Loom is now wrapped and shielded
Just waiting on the eBay 5.5litre reservoir

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Mk5 General Area / clutch pedal stuck half way/not returning
« Last post by hcmzah on January 19, 2026, 11:02:08 pm »it seems like my car wants to have all the problems right now
im having an issue where my clutch pedal is getting stuck halfway on return sometimes. it mainly happens when im braking and coming up to a junction/roundabout.
especially on dual carriageways/motorways when im going 50mph+. i then have to pull the pedal back up and keep pumping it so i can change gear.
in the mornings, the clutch has little pressure and is low, so i also have to pump it before driving.
i've already changed the clutch master cylinder, bleeder block, changed and bled the fluid.
i've also had a clutch, flywheel and slave cylinder replacement a year ago. could the slave have gone again?
im having an issue where my clutch pedal is getting stuck halfway on return sometimes. it mainly happens when im braking and coming up to a junction/roundabout.
especially on dual carriageways/motorways when im going 50mph+. i then have to pull the pedal back up and keep pumping it so i can change gear.
in the mornings, the clutch has little pressure and is low, so i also have to pump it before driving.
i've already changed the clutch master cylinder, bleeder block, changed and bled the fluid.
i've also had a clutch, flywheel and slave cylinder replacement a year ago. could the slave have gone again?

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