MK5 Golf GTI
All Things Mk5 => How to Guides / Troubleshooting => Topic started by: Liamprime93 on March 10, 2015, 07:13:43 pm
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afternoon guy, basically I have had a look through the forums for the past 30 min and I cant fid the answer I was after. my air con isn't blowing cold air, so I took it to my mate and mechanic who check the system for pressure and gas in the system which there was plenty of both. so basically he thinks its the compressor which I thought it might be. I can get the part for about £200 and he said he could do the job for about £80-£100. which I think is quite good for this price, I just wanted to know if this is a common fault for the mk5 golf gti, and if just replacing the compressor should do the job coz in the older models of the golf's this is a common problem due to the clutch within the compressor braking or sticking I was told. if anyone has had this problem and had it resolved and could let me know how they got on would be great cheers, thanks for taking the time to read and to look forward to your answers.
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I was told mine was leaking from the pressure sensor, maybe another place to check as its cheaper than replacing the compressor.
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Pressure sensor as said is a much more common failure.
It would show on VCDS
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Yes it is a very common problem, my Tiguan had the same pump as a mk5 and it failed. You can get a Sanden replacement for £200 new and then a flush/regas on top if you are lucky that no shards have entered the system.
The mk5 compressor is different to the mk4 one.
If you can have someone in the cabin activate AC whilst you look at the pulley. There is a plate on it which should 'pull in' when AC is engaged, then 'push out' when not engaged.
The pulley is designed to rotate at all times, not just in engagement, whereas with mk4 etc it only spins when AC is engaged.
People turn off AC to save economy and this happens.
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Recently had this on my edition 30, had no codes when scanned with vcds but still turned out to be the pressure switch !
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Hoping mines the pressure switch also
Had no codes and have changed the switch. Having it regassed next week.
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Pressure sensor as said is a much more common failure.
It would show on VCDS
Sorry to bring up an old thread but @xjay1337 (http://www.mk5golfgti.co.uk/forum/index.php?action=profile;u=7542) I've VCDS scanned and have shown no symptoms. I can hear the blower going with ac on. Could it just be a simple re-gassing required?
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If the compressor is working then all it would require is a regas. Found this on many cars I've worked on. Also found no compressor working so regassed it and it then works fine.
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If the compressor is working then all it would require is a regas. Found this on many cars I've worked on. Also found no compressor working so regassed it and it then works fine.
@r5gtt (http://www.mk5golfgti.co.uk/forum/index.php?action=profile;u=11199) I've noticed you're very active on the forum lately and you're always great help to other members so thanks for that first off! :happy2:
Looks like my G65 sensor faulted on VCDS but that could actually be because there's no gas in it.
Going to regas at my local tyre spot for €60 tomorrow morning and if that doesn't work, I'll fit a new G65.
Don't suppose you've ever fitted a G65?
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Thanks for that @lukemk5gti (http://www.mk5golfgti.co.uk/forum/index.php?action=profile;u=10176) I could fit that no problem mate.
First thing I'd you could be right that the sensor is showing up due to no gas in the system so first port of call would be to have it gassed and they shouldn't charge you if it's leaking out. I'm hoping you'll get it gassed up and the Aircon will work fine but if not then you can get back to me and I'll happily fit the G65 sensor on for you.
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Unless @r5gtt (http://www.mk5golfgti.co.uk/forum/index.php?action=profile;u=11199) you're able to get to Dublin, Ireland I'm afraid I'll have to decline the generous offer :signLOL:
I'l get it gassed tomorrow, they said if it doens't fix it that they won't charge me.
At which point I'll fit a G65 and regas! Plan sorted! Thanks
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Mine blows hot air as well, I get no fault code on vcds. Watching to see replies.
Luke, go to kwik fit, dont say anything about the fault and if they cant regas it they won't charge you
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Fit the sensor first.
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Mine blows hot air as well, I get no fault code on vcds. Watching to see replies.
Luke, go to kwik fit, dont say anything about the fault and if they cant regas it they won't charge you
:happy2:
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Unless @r5gtt (http://www.mk5golfgti.co.uk/forum/index.php?action=profile;u=11199) you're able to get to Dublin, Ireland I'm afraid I'll have to decline the generous offer :signLOL:
I'l get it gassed tomorrow, they said if it doens't fix it that they won't charge me.
At which point I'll fit a G65 and regas! Plan sorted! Thanks
:doh: Why do you guys live so far away :signLOL:
Sounds good peskyjones :congrats: again @lukemk5gti (http://www.mk5golfgti.co.uk/forum/index.php?action=profile;u=10176) don't tell them about anything :grin:
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My local tyre fitter said he would gas in the morning.
If it fails to gas, he won't charge, I'll fit new G65 sensor and come back to him!
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My local tyre fitter said he would gas in the morning.
If it fails to gas, he won't charge, I'll fit new G65 sensor and come back to him!
Glad to hear it as why waste money on a sensor if gassing may do the job :happy2:
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Any update on this @lukemk5gti (http://www.mk5golfgti.co.uk/forum/index.php?action=profile;u=10176)
I'm based in dublin ireland and having the exact same problem with my gti.
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So I did update this on another thread but @jl1 (http://www.mk5golfgti.co.uk/forum/index.php?action=profile;u=12547) here you are - I went to Leixlip tyres, they filled with new gas and it made no difference so they removed the gas and left the system empty.
I called VW for the part and it was €85 for just the sensor so I picked one up off aliexpress for maybe €6. Yes it takes a month to deliver but it's a big saving.
I'll then go to VW parts to get the O-Ring which I have the part number for.
I'll fit the lot in a month and go back to Leixlip tyres where they'll fill with gas again for around €50.
@jl1 (http://www.mk5golfgti.co.uk/forum/index.php?action=profile;u=12547) you need to know for sure it's that sensor through VCDS and not one of the more likely other failures!
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I reckon your aliexpress cheap sensor will arrive broken.
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Silly way to go about it but hey.. its your car. :confused:
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I dunno to be honest. If the bodge part breaks, all that's going to happen is he needs to replace it right? Worst case scenario, he buys one for 6 euro. It breaks/ arrives broken. He wasted 6 euro. Best case scenario - He buys one for 6 euro. It works fine. He's saved 79 euro. The risk in that is worth it in my eyes. If the bodge part was 20,30,40 euro then its a different story...
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I dunno to be honest. If the bodge part breaks, all that's going to happen is he needs to replace it right? Worst case scenario, he buys one for 6 euro. It breaks/ arrives broken. He wasted 6 euro. Best case scenario - He buys one for 6 euro. It works fine. He's saved 79 euro. The risk in that is worth it in my eyes. If the bodge part was 20,30,40 euro then its a different story...
Same thinking @Peskyjones (http://www.mk5golfgti.co.uk/forum/index.php?action=profile;u=11854)
It's only a minor sensor so I'm not that worried, anything major I wouldn't even think about a Chinese rip off but as it stands I've already saved myself a considerable amount of money! VW were looking for €99 for scan, €85 for sensor and another €100 for labour so all in it's my €55 versus their €284. Yes I have to wait a month and yes there was trial and error with gassing the system first to rule out that but it's still worth it in my eyes!
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I dunno to be honest. If the bodge part breaks, all that's going to happen is he needs to replace it right? Worst case scenario, he buys one for 6 euro. It breaks/ arrives broken. He wasted 6 euro. Best case scenario - He buys one for 6 euro. It works fine. He's saved 79 euro. The risk in that is worth it in my eyes. If the bodge part was 20,30,40 euro then its a different story...
Because the bodge part means AC has to be refilled at another 50 euros cost plus labour or time to replace it.
If knew it was the sensor anyway you could have just bought the sensor for 85 quid.
I'd happily pay 30 quid more for a genuine sensor rather than a pikey piece from China, which you will probably have to pay 20% import on anyway.
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I didn't know it was the sensor at first. It was a 50/50 that it was either low gas pressure or the sensor.
Again €6 for Chinese sensor and €85 for OEM.
Each to their own Jay. I chose to save my money as it's a minor part, I wouldn't do that on anything safety related!
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So if this cheap sensor fails then it will need re gassing, not just a case of replacing the sensor with a genuine one this time? So the worst case scenario is actually cheap sensor fails, £ for regass + £ for genuine sensor? I said what I said thinking that it would just be a case of - replace cheap sensor with genuine sensor and its done - that would be worth the risk. Spend £4 to possibly save £60/70.
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Take the sensor out and all the all gas comes out too.
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Take the sensor out and all the all gas comes out too.
Isnt there a valve in it to ensure that doesnt happen? I cant remember
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I don't think there is as the only two valve and the hot and cold side inlet valves. @tappy is there a valve where the pressure sensor fits mate?.
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I'm not 100% sure as I haven't had to change one for a long time but I believe I have read somewhere that there is a valve.
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thought so. would be incredible stupid not to have one there.
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So it's not an issue replacing it without having to de gas and re gas. good thing too as it's not a cheap job if you're constantly having to replace cheap switches :signLOL:
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N280 valve
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N280 valve
That's the actual pump valve.
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http://www.vwaudiforum.co.uk/forum/showthread.php/156894-Advice-regarding-AC-N280-Valve-no-cold-air
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:happy2:
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afternoon guy, basically I have had a look through the forums for the past 30 min and I cant fid the answer I was after. my air con isn't blowing cold air, so I took it to my mate and mechanic who check the system for pressure and gas in the system which there was plenty of both. so basically he thinks its the compressor which I thought it might be. I can get the part for about £200 and he said he could do the job for about £80-£100. which I think is quite good for this price, I just wanted to know if this is a common fault for the mk5 golf gti, and if just replacing the compressor should do the job coz in the older models of the golf's this is a common problem due to the clutch within the compressor braking or sticking I was told. if anyone has had this problem and had it resolved and could let me know how they got on would be great cheers, thanks for taking the time to read and to look forward to your answers.
I have exactly the same issue, Apparently you should run the units on econ wehn you dont want ice cold air as this stop the pump or something.
I have power at both switches so is pump found second hand ones on ebay for about £50 so think I will do this and then fit it myself.