MK5 Golf GTI
All Things Mk5 => Mk5 General Area => Topic started by: crashdesk on February 05, 2022, 07:11:00 pm
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Hi everyone,
So, 4 weeks ago the engine light came on. No noticeable difference in drive quality.
Went to dealer. Scanned. Fuel pressure issue. They said changing the charcoal filter was needed. Done. Drive for a week. Light was back on again. Scanned again. Same error code. They noticed fuel filter leak and spark plugs were terrible. Both replaced. Drove on and off for a week. Engine light on again. One thing I did notice , that may be the cause, was that I floored it on both occasions, this time coming on to motorway off slip road.
So the costs are mounting. Can’t bear to bring it back and pump more money into the car. It is running well and I love it.
Anyone come across similar issue and have possible remedy? Could it be turbo leak? So many things it could be and if I keep having to go back to garage to get parts replaced it is going to be into £1000s which I truly can’t afford.
Many thanks for any help you can give :-)
C
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If you post up the error codes someone on here might be able to advise you better.
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Thanks! I will try and get those.
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always use an indi vag specialist, dealers are incompetent, rescently argued with the head engineer at vw who tryed to tell me that there was no special tool for sealing injectors, also had someone pay over £2000 for new injectors and manifold replacement
to try and cure misfirs and rough running, it was just carbon build up in the end, £270 for walnut blasting.
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I will try and find and I do locally. Not really understanding the code thing. I thought it would have been more specific than just highlighting and issue with fuel pressure system or something similar.
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Does the eml light only come on when you floor it?
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if it was done at dealers they normally give you an invoice for what was found, the fault should be on that if not ring them up and ask for the specific code, if putting your foot down triggers it then im assuming its a requested pressure not met fault but im guessing, is the car driving ok or is its performance reduced or anything?
could be anything from fuel filter to fuel pump, but take it to a vag indi, i was recently getting fuel cuts and misfires scanned with vcds found nothing even though it was running on 3 cylinders at 1 stage, vag specialist found misfires on 2 cylinders but only on exhaust side so after new injectors running like a dream now, when was your cam follower last changed?
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No codes on the invoice. Will call them on Monday.
As far as I know, the cam follower was never replaced.
Anyone her from N.I. Having tough time finding good VAG specialist
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where are you located
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Belfast
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Won't be able to get codes until Monday but this is what is on first invoice.
Initial scan showed p0441 evap control valve.
Replaced valve; clip; evap canister; breather
Cleared all faults and tested okay.
Second time I went in when light came on just says...
Diagnostic
Removed and replaced fuel filter and spark plugs
Cleared all faults and tested okay.
Now it is back on again.
I really do think it came on when I gave it a bit of welly, unless the system takes time to calculate the emissions etc because I drove it about town all week.
Thanks again for all the advice!
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When the eml light came on, was it in limp mode? Did it sound like a subuaru
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auto technic montgomery road, or ai autosport both in belfast, but havent used either of them, as im in the north west area,
none of those faults have anything to do with fuel pressure, that you mentioned earlier, if the cam follower was never changed i would be pulling it to have a look its a 5 min job,
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Thanks. I have not noticed any change in power or sound. I will check out those indi’s.
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does the light still come on if you slowly press the throttle down if it only does it when you floor it, is your car standard or tuned
if the light does not come on if your gentle with the throttle then its probably fuel pressure related, if it happens to be a low pressure fuel sensor let me know as i have a spare you can have,
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Standard car. Just over 110000 miles. It is the engine light so it is constantly on now until it gets fixed or I clear the errors.
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My EML used to come on when I floored it after a remap. Lucky I had a spare coil pack to rab vcds, found the bad cylinder, replaced the coil pack and was fine. Ultimately I then changed all the coil packs a week later. It misfires badly tho. Just a thought.
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It’s the unknown that’s is killing me. Quite a few things it could be. I know nothing about the car except what I read online. My initial thought was that the purge valve having some contaminant still in it. Not sure how/why coil packs fail. They were replaced due to the recall. That was at around 45000 miles.
Then you have the chance of it being a dodgy sensor.
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You think a twin turbo oil leak would cause the issue?
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i dont know what you mean, you dont have a twin turbo you have a single turbo if its a golf gti, at 110000 miles my money is on injectors, there is a few checks you can do yourself to rule a few things out
1. pull oil dipstick when car is running if the car starts running badly your pcv is okay
2. check your dv valve for holes, jack up th car and take wheel off then there is 3 t30 bolts to undo, but use an axel stand for safety,
3. check your cam follower undo the 17mm fuel line nuts after you have released the pressure from the bleed valve, then disconnect regulator switch from the top and undo the 3 t30 bolts for the fuel pump remove and pull follower out with finger and check for wear,
if it was any of the above the car would feel very slow after 3000rpm
if it turns out to be a coil pack or a fuel pressure relief valve or a lpf sensor message me as i have spares of these you can have if needed
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I was just checking my last MOT note and the guy said there was a twin turbo oil leak and I would just need a new washer. He must have just meant turbo.
I will go through and check those things tomorrow. Thanks again!
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he probably said intercooler oil leak, which is normal, i have put new seals on and made no difference,
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I was just checking my last MOT note and the guy said there was a twin turbo oil leak and I would just need a new washer. He must have just meant turbo.
"Twin turbo" is just nonsense - but if its a washer, it will be the crush washers on the oil feed banjo bolt , reasonably easy to get to once the heat shield is out of the way.
But that will just leak oil, unlikely to cause CEL.
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P0441 is to do with the carbon cannister system, can be the carbon cannister itself, the hoses for it split, the solenoid on the intale 'cannister purge' or something as daft as a fuel cap seal leaking. Mine had the fault about 4 years I just used to clear the codes when they put the light on which was once every 6 months or so. Funny thing is unless its got a really bad leak because of a hoses badly split it didn't effect the running of my car at all.
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that would make sense due to having no effect on performance, i was thown off by the fuel pressure fault he claimed in the beginning
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@GVK (https://www.mk5golfgti.co.uk/forum/index.php?action=profile;u=516) if that is the case I may have to invest in something to clear the code. Recommend anything apart from detaching the battery?
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if its an evap code and you have already replaced charcoal chanister and purge valve, then it must be a leak in a pipe, or a fuel filer cap seal as mentioned, you could get a spray bottle and water the pipes connecting to the charcoal canister and try and find it, you could just buy a cheap £30 code reader and keep deleteing the code but that would anoy me, get to a vag independent because they charge half the price of vw and are usually much more capable
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Thanks everyone. Booked in for a scan with indi. Let's see what it comes back with. :-)
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Soooooooooooo. It's been a while. Mechanic has had a look, carried out smoke test, and everything seems to be pointing towards the Crank Breather. They are going to replace. If the engine light comes on again after that I am just going to run the car into the ground. Can't afford to keep putting money into it even though the monthly upkeep may be less than financing a new car.
During the wait to get the car looked at, the boot wouldn't close and rear wiper stopped working. All linked to the boot lock; needs replacing...again! lol
Never ending
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Soooooooooooo. It's been a while. Mechanic has had a look, carried out smoke test, and everything seems to be pointing towards the Crank Breather. They are going to replace. If the engine light comes on again after that I am just going to run the car into the ground. Can't afford to keep putting money into it even though the monthly upkeep may be less than financing a new car.
During the wait to get the car looked at, the boot wouldn't close and rear wiper stopped working. All linked to the boot lock; needs replacing...again! Last time it was locked and wouldn't open. lol
Never ending
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the reat wiper not working will probably be the wiring behing the ribbed rubber tube in the top corner or the boot when its open,
pull back the rubber gromet and check for breaks, my rear wiper stopped working and it was the wiring i just descibed, check and let me know
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Thanks. I think they need to rule out because the boot cannot lock. Then the wiper would not not. Only when the boot is closed/locked, the wiper will work?
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Got the car back. Boot latch replaced. Wiper and boot now working. PCV valve sorted. Engine light off. Fingers crossed. Thank you again everyone. Not on here very often and when I am I usually have a problem with the car.
Guy said apart from those two things the car is in good condition. Engine/drive wise it is great. Just the rusted arches make me cry each time I see them lol
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glad to hear, you can buy the front wings on ebay for around £60 each and the same again for painting at a friendlt spray shop
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Good to know the wings wouldn't be too expensive! Cheers
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So after 3 days driving the engine light is back on. End of the road for paying to fix now :-( Wasn't even flooring it. Just general driving.
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In the end, it was the Lambda sensor, after investing nearly £1000 in troubleshooting. Gutted.
An 2018 A3 Sportback 1.5l has come up for sale. I may buy it and sell the GTI. Sad times.
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I feel your pain. I spent considerably more than that chasing a rattle, which turned out to be a £10 plastic O ring. It's how it goes with cars sometimes.
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Feeling much better about it now @Pudding (https://www.mk5golfgti.co.uk/forum/index.php?action=profile;u=10733) :grin: