dazr32 Posted October 16, 2005 Report Share Posted October 16, 2005 i have only had my car for twelve months and i have not got a clue about the fans issue, can someone tell me what the potential problem is with them i have done a search but could not find anything. thanks in advance. Link to comment Share on other sites More sharing options...
JAYDR32 Posted October 16, 2005 Report Share Posted October 16, 2005 daz the fans are prone to giving up, happened to mine recently and the car would over heat when not on the move or stuck in traffic, luckily got them replaced under warranty... Link to comment Share on other sites More sharing options...
dazr32 Posted October 16, 2005 Author Report Share Posted October 16, 2005 i ta ke it they will just fail then there is no way of checking them to see if they are ready to break. Link to comment Share on other sites More sharing options...
hotdog Posted October 16, 2005 Report Share Posted October 16, 2005 Most dealers know about this problem and should replace them under warranty. I think that the problem is caused by the failure of a resistor in the fans that causes them to pulse and eventually fail. It can bring up the emissions light sometimes but not always This is a known VW problem and your dealer should be aware of it - hopefully! The problem gets worse when the climate control is on Auto, this makes the fans etc. work harder. Link to comment Share on other sites More sharing options...
dazr32 Posted October 16, 2005 Author Report Share Posted October 16, 2005 can i get them replaced under warranty even if they have not failed as there is a known problem with them or not. also are there any other warrnty issues that i should have checked out or is it just down to things failing. may be it would be a good idea to get a list together especially as the warranty will start to end on the cars. Link to comment Share on other sites More sharing options...
hotdog Posted October 16, 2005 Report Share Posted October 16, 2005 These are the warranty ones I know of: 6463 Update Radiator fan replacement Strut top mount replacement Squeaky seats Would be a good idea to get a list of work that we've all had done together like you say. I've only got 11 months left on mine I'm not sure how you stand as to getting them replaced. My dealer just replaces things when I go in. When I first had the car I had the emissions light problem, which was traced to a faulty earth wire, but they phoned me the day before I was due to pick it to say they were doing the fan replacement. They also did the 6463 update without any asking. Could be down to the individual dealers Link to comment Share on other sites More sharing options...
dazr32 Posted October 16, 2005 Author Report Share Posted October 16, 2005 sh*t what is wrong with the strut top mounts now. oh my god what have i bought. Link to comment Share on other sites More sharing options...
hotdog Posted October 16, 2005 Report Share Posted October 16, 2005 [ QUOTE ] sh*t what is wrong with the strut top mounts now. oh my god what have i bought. [/ QUOTE ] Could of been worse. You might have bought a Merc Link to comment Share on other sites More sharing options...
dazr32 Posted October 16, 2005 Author Report Share Posted October 16, 2005 you can do some tidy handbrake turns in a merc cos you dont need to pull any handbrake levers you just slam your foot on it Link to comment Share on other sites More sharing options...
Pincher Posted October 16, 2005 Report Share Posted October 16, 2005 On a semi-related note, I have noticed that if I start my car up and leave it for about 2 minutes, the fan comes on. I also noticed it coming on whilst sitting at traffic lights today. Had only been pootling round town and doubt I got over 35mph in the whole journey. Is this normal/expected behaviour from an R??? Link to comment Share on other sites More sharing options...
hotdog Posted October 16, 2005 Report Share Posted October 16, 2005 It all depends on a number of things. Was the climate on auto and trying to cool the interior down. I believe the fans are linked to this? And as for driving round town, I'd say this is normal. The amount of heat under the bonnet is amazing. It heats my garage in wintertime when the car has been out for a run Link to comment Share on other sites More sharing options...
Pincher Posted October 16, 2005 Report Share Posted October 16, 2005 Yeah - climate is always on Auto, unless it demisting the front screen. Fair enough about driving around town, but to cut in a minute or two after startup? Surely the engine can't generate that much heat in such a short space of time, especially when idling. Link to comment Share on other sites More sharing options...
hotdog Posted October 16, 2005 Report Share Posted October 16, 2005 If its a cold start then it could be the fan that shoves more oxygen into the catalyst. I'm sure I saw it posted somewhere that the climate being on Auto will cause the fans to run even if the engine is cold. Try doing a cold start but keep the climate switched off and see what happens Link to comment Share on other sites More sharing options...
Luke Posted October 16, 2005 Report Share Posted October 16, 2005 Not sure if this is relevant but on my 2 year service the dealer told me that my (standard) exhaust was corroded, not enough to blow but on its way and to bring it back in a few months time and it would be replaced under warranty. Anyone else? Link to comment Share on other sites More sharing options...
Pincher Posted October 16, 2005 Report Share Posted October 16, 2005 Cheers Hotdog. It was a cold start - I'll try with the climate off next time Link to comment Share on other sites More sharing options...
Roy32 Posted October 16, 2005 Report Share Posted October 16, 2005 I had my fans replaced recently. A way to check them is to put the climate on auto and then the temp on low to make sure the air conditioning is on (if its to cool outside it may not cut in), your fans should come on perminantly and not go off, if they come on at high speed and then go off and then on and so on they are faulty get them changed under warranty. Link to comment Share on other sites More sharing options...
Soulboy Posted October 17, 2005 Report Share Posted October 17, 2005 Just had my fans replaced this weekend. I didnt realise there was a problem until it went in for a service last week and the techie said that the fuse was corroded and that is a sign that there is a fault. Anyway, it went in on Saturday and was returned within half a day and covered under warranty btw I had noticed the fans switching on and offf quite often, even when the engine was still cold. Link to comment Share on other sites More sharing options...
dubzter Posted October 17, 2005 Report Share Posted October 17, 2005 Mine were also replaced along with the aircon motor, There is a good post on UK-Mkivs.net about the fan issue Its a long read but here you go Click here Link to comment Share on other sites More sharing options...
L3ETT Posted October 17, 2005 Report Share Posted October 17, 2005 [ QUOTE ] Yeah - climate is always on Auto, unless it demisting the front screen. Fair enough about driving around town, but to cut in a minute or two after startup? Surely the engine can't generate that much heat in such a short space of time, especially when idling. [/ QUOTE ] Just had mine replaced too. I think mine was related to the air con fan, as the main engine fan was kicking in every 30 seconds or so even when the engine wasnt warm. Apparently this is because its compensating for the air con fan. Anyway all ok now after being changed. Link to comment Share on other sites More sharing options...
calumcousins Posted October 17, 2005 Report Share Posted October 17, 2005 yep - afaik, there is a low and high speed fan (not sure if these are 2 seperate fans or just different settings)... Just to re-gurgitate what i read either on here or uk-mkivs before: low speed should run all the time that the air con (AUTO or demist mode) is on. If it doesnt, then you're likely to experience the high speed fan cutting in and out at about 1 minute intervals, even from a cold start. This is due to a resistor burning out within the low speed fan unit. I presume then that eventually, the high speed fan will fail too (seeing as it is now being used more), and that could lead to more serious problems, a la overheating engine. Link to comment Share on other sites More sharing options...
dazr32 Posted February 7, 2006 Author Report Share Posted February 7, 2006 hello people sorry to bring an old thread up again, but my fans are going haywire. they are pulsing on and off intermittently every 30 seconds for about six seconds at a time, on full power as well. with the air con in auto and on low, i pressume that we can safely say they are fooked . the thing is i am now concerned about the air con compressor and also the annoying bubbling/gargling noise that i have been getting for some time now in the passenger side footwell. also i read somewhere that the idea of one of the fans apart from the obvious is to help heat the cats up by blowing hot air onto them at start up, is this correct or have i had (need ) a bang on the head. if the fans have not been functioning for a while then could remedial damage have occured to say the cats/exhaust as well, any help would be appreciated, i understand there are a lot of excited people on here at the moment that are looking forward to getting their new beasts but please spare a thought for us poor people that you are leaving behind Link to comment Share on other sites More sharing options...
hotdog Posted February 7, 2006 Report Share Posted February 7, 2006 Have a read of this http://www.uk-mkivs.net/forums/449470/ShowPost.aspx If it don't work let me know I reckon its time for a trip to see your local numpty's asap Link to comment Share on other sites More sharing options...
rs32 Posted February 7, 2006 Report Share Posted February 7, 2006 great thread linked from first post, not read it before. hope it's not damaged the exhaust or engine Dazr32 different aircon unit in MK5 ? Link to comment Share on other sites More sharing options...
dazr32 Posted February 7, 2006 Author Report Share Posted February 7, 2006 cheers mark according to that post the high speed fan kicks in between 99-105 degrees so that means the engine is constantly overheating. cos it is a lot worse now than when i spoke to you last week, although when you turn the air con off then the fans dont kick in. this is the bit i dont get as last week when it was nearly freezing outside the fans were kicking in all the time but i am sure that the aircon was off, anyone got a time machine so i can go back and check. o and i will get the euro lotto numbers while im there. Link to comment Share on other sites More sharing options...
dazr32 Posted February 7, 2006 Author Report Share Posted February 7, 2006 i have only got 24 days warranty left now so i hope there is no underlying damage to the engine as maybe it wont showup for a while , maybe not even until the summer. Link to comment Share on other sites More sharing options...
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