MK5 Golf GTI
All Things Mk5 => How to Guides / Troubleshooting => Topic started by: Bazman on May 30, 2015, 11:24:09 am
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Hi there,
I have a golf mk 5 GT TDI.
I recently had the engine warming light come on and the message about emissions workshop.
Now the mechanic has had a look and says it needs a new EGR valve and glow-plugs which looks like it's gonna cost circa £700 all in!
Thing is the car runs 100% fine there are no symptoms what so ever. (Well there is one actually: after start up on a very cold day there is a very faint wiff of exhaust fumes right after start up but it disappears almost immediately and is only in sub-zero conditions.)
£700 seems a lot to repair a car that is running perfectly?
http://www.mk5golfgti.co.uk/forum/index.php/topic,72241.0.html
From the above it seems that the EGR valve is not critical, and as I am not experiencing any problems so I don't need to delete pipe either.
Can I just leave the EGR in place?
If so should I have anything else done like have it mapped out of the engine control system?
TBH the glow plugs appear to be working fine too, but that is a secondary issue cost wise.
Thanks Baz
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My egr is still in place but been mapped out and also the egr cooler removed
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Thanks Maxitrol,
Is is strictly necessary to remove the EGR cooler? Can I just map EGR out and leave everything in placve?
How much was the ECR cooler removal?
Like I say car is completely symptom free so really don't inclined to spend huge amounts.
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Do you know what faults you were getting? ASV's are quite a common failure also.
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The ERG went on my wifes mk6 TDI - lots of lights and went into limp mode. You'll know when it happens!
Had to be fixed quick and went VW (local indys were not really interested) cost £1600.... Ouch!
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You can leave the cooler in place and map the egr out as mine was like that for a while
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Hi Matto, I had it looked over by the local indy vw specialist and he recon's it's the EGR, and glow plugs.
Given car is symptom free, mapping out seems to be the best option.
Just want to check that by doing this I won't harm my engine and give myself a bigger bill later. Given it's non-critical I assume it should be OK but just want to double check.
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Hi guys, I'm new to the UK (London) and I have just purchased a MK5 Golf 2.0 TDI a few days ago and just this morning the engine light came on with the same 'Emissions Workshop' warning. I've been reading that I should get it read with a Vagcom to get the fault code but I don't know any local garages in SW who can do it, so can anyone recommend any good places? And from what I've been reading mapping it out like Bazman is thinking, maybe the best option? Cheers in advance
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Hi guys, I'm new to the UK (London) and I have just purchased a MK5 Golf 2.0 TDI a few days ago and just this morning the engine light came on with the same 'Emissions Workshop' warning. I've been reading that I should get it read with a Vagcom to get the fault code but I don't know any local garages in SW who can do it, so can anyone recommend any good places? And from what I've been reading mapping it out like Bazman is thinking, maybe the best option? Cheers in advance
You would be best putting your question in the correct section as members will see and answer you better
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Hi Matto, I had it looked over by the local indy vw specialist and he recon's it's the EGR, and glow plugs.
Given car is symptom free, mapping out seems to be the best option.
Just want to check that by doing this I won't harm my engine and give myself a bigger bill later. Given it's non-critical I assume it should be OK but just want to double check.
There is not one good reason to have an EGR fitted. Get rid haha.
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Yeah as matt says get rid of it
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Out of interest chaps, does getting the EGR valve blanked/mapped out make the car more responsive in throttle positions that would normally allow the egr valve to be open? I've had a few diesels in the last few years, all have had the egr valve apart from my first two cars (old 306 xudt based ).
Thanks :)
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It does seem to but not sure if that was me imaging things
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The mrs has a Mk1 Octavia TDI and has just had to have a replacement turbo after many cleaning sessions thanks to her having completely the wrong car for her usage. The garage blanked it off as they said it should help a little bit? Hasn't thrown up an EML yet but I assume the ECU in the mk5 onwards is slightly more intelligent and will do unless its mapped out?
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It needs the eml light mapping out like mine did
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I couldn't tell a difference when I removed mine. It is a preventative modification as opposed to a performance one. The EGR allows exhaust gases back into the inlet to be re-burnt, to reduce emissons supposedly. The after effects of this, is you get a build up of a horrible sooty gunge that will eventually clog the inlet and manifold solid.
Sometimes you can get away with just blanking it off. I did on my MK4 PD150 but some of the newer ones are able to detect flow through the EGR. A blanked off EGR = no flow and and EML, so the best way is to have it mapped out properly to cause any nuisance EML's. Tuning companies now do a Stage 0 which will do the required mapping to prevent this but with now enhacncement to performance if that is not your thing.
Heres are a couple of photos of my EGR and ASV at 20K miles.
(https://www.mk5golfgti.co.uk/forum/proxy.php?request=http%3A%2F%2Fdaz.co%2Fmedia%2FMatt.H%2FMK5_Golf_GT_Sport_170%2F10_zpsa3bbaf8b.jpg&hash=bbbca28bab2513380648069a62a284c4d05b30c9)
(https://www.mk5golfgti.co.uk/forum/proxy.php?request=http%3A%2F%2Fdaz.co%2Fmedia%2FMatt.H%2FMK5_Golf_GT_Sport_170%2F11_zps2b31cf52.jpg&hash=ca64c44e713899d348ef44ff34ac6985d034beda)
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Wow! So definitely worth doing! My car is approaching 8 years old but has only done 55k so its probably a blocked up mess in there! Seems to breathe ok though and fuel economy for my current usage pattern has been fantastic!
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Yeah definitely worth doing;I even took the manifold of and cleaned that why I was on doing it
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I just had to do mine at the weekend I blanked it off at the manifold and removed the EGR cooler with the kit from Darkside - Highly recommend the kit from them! Due to the short metal pipe from the exhaust manifold into the cooler had split at the bellow section.
I know I had loss of power due to this, but it feels better than it ever has! So much more responsive at lower revs -didn't expect the result I got. However, I did also remove the air intake manifold and cleaned with air intake/carb cleaner + the ASV too.
Easy to do and well worth it for the result in my case.
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Is the cleaning something that average Joe could do? I've swapped a couple of engines in my time but these modern things scare me slightly! :) (I appreciate I can't map it myself, but I figured I could take it to celtic tuning after for a small remap!)
Thanks :)
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Is the cleaning something that average Joe could do? I've swapped a couple of engines in my time but these modern things scare me slightly! :) (I appreciate I can't map it myself, but I figured I could take it to celtic tuning after for a small remap!)
Thanks :)
Yeah you will be able to do it,the bolts for the egr are bit awkward but do able,make you when you take the boost pipe of put a plastic bag etc over the top just in case you drop some thing and the last place you want it going is down theft