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displaying posts 1 to 21 of 21
| Author | Subject: AC button powering fan. |
 306matt
Regular  Location: Frodsham Registered: 13 Feb 2007 Posts: 419 Status: Offline |
Post #1
Hi all,I am wanting to make the AC button in my Hdi be a fan override switch. I have no fans at present as Im going slimline asap. I believe it can be done, has anyone got any knowledge on this? Many thanks, Matt ________________________________________ Team Astor Front Mounted... Hybrid turbo on it's way. |
 Posted 24th Apr 2010 at 17:26
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davedgti6
Seasoned Pro  Location: whiston, prescot Registered: 28 May 2006 Posts: 1,651 Status: Offline |
Post #2
It can be done but make sure your aircon pump is disconnected or removed altogether, just bridge pins 1 & 2 on the pressure sensing valve by your washer bottle, this will turn your fans on at low speed when you press the aircon button but will raise the engine tickover speed slightly, alternatively bridge pins 1 & 4 (i think) and that will turn the fans on at high speed when the aircon button is pressed *note* this does not turn on the fans when the outside temp goes below 5 degrees for some reason, -must be some form of safety thing built into the ecu,    ________________________________________ Team Supercharged Gti-6 |
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Posted 26th Apr 2010 at 01:56
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mechanical_repairs
Seasoned Pro  Location: leicester Registered: 10 Jan 2005 Posts: 12,122 Status: Offline |
Post #3
Long time no see David you still active on the track with the motor? Hope all is well.Carl ________________________________________ C.G.Cars of Leicester, Peugeot/Citroen/Renault specialist Tel: 01162 624498/07799 405184 WWW.CGCARSLEICESTER.CO.UK36 narborough road south, Leicester LE3 2fn MOT station now open, tests £35 with a free retest. Recovery available with a recovery unit, for those not so local jobs Also offer the loan of a free courtesy car 306 dturbo |
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Posted 26th Apr 2010 at 02:36
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davedgti6
Seasoned Pro Location: whiston, prescot Registered: 28 May 2006 Posts: 1,651 Status: Offline |
Post #4
mechanical_repairs wrote: Long time no see David you still active on the track with the motor? Hope all is well. Carl Hi Carl motor still running well, not been on track for ages though due to no dosh  , hopefully building trade will pick up soon and i'll be back out there  ________________________________________ Team Supercharged Gti-6 |
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Posted 26th Apr 2010 at 02:47
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306matt
Regular Location: Frodsham Registered: 13 Feb 2007 Posts: 419 Status: Offline |
Post #5
Hi Dave,Tried this today and it didn't seem to work, I have disconnected the AC compressor, and bridged the 2 correct pins. Any ideas? Thanks Matt ________________________________________ Team Astor Front Mounted... Hybrid turbo on it's way. |
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Posted 31st May 2010 at 02:23
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foxy6
Regular  Location: cumbria Registered: 01 May 2010 Posts: 168 Status: Offline |
Post #6
hi there pm eddygti6, i own his old car and mine is done like your after. |
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Posted 31st May 2010 at 03:26
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lwgti-6
Senior User  Location: Nottinghamshire Registered: 27 Oct 2008 Posts: 906 Status: Offline |
Post #7
You need to bridge pins 1 & 3 matey...EDIT: Just seen its for a HDi?..Not sure if it will be the same but the GTI-6 are pins 1 & 3 bor bridging the aircon so the fans come on  ________________________________________ EX Bianca 6 owner,Now drives: Octavia vRS |
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Posted 31st May 2010 at 03:33
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306matt
Regular Location: Frodsham Registered: 13 Feb 2007 Posts: 419 Status: Offline |
Post #8
Hi all,It's a Hdi, had my uncle( an electircian) helping today, he had the hanyes and has got it to work when the thermostat comes on, unsure on getting it to come on by bridging the pins. We spent a good few hours on it. Thanks, Matt ________________________________________ Team Astor Front Mounted... Hybrid turbo on it's way. |
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Posted 31st May 2010 at 03:48
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tvrfan007
Seasoned Pro  Location: In the garage Registered: 29 May 2005 Posts: 3,488 Status: Offline |
Post #9
Were you having fan issues by chance, ie not switching on?I'm having issues with my fans for a second time. First time one fan had lost it's 12V feed so you got no fans (series) until it switched to parallel and the one working fan kicks in on overtime. This time the other fan has now decided it likes to run with the ignition off and the car locked.  ________________________________________ I'm Si btw Night Blue VW Golf GTD Bianca LBSC Rallye - Track/Road Slag Project Thread Sparkling Silver Mini Cooper D - Super Dooper  - (The other half's wheels) |
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Posted 31st May 2010 at 12:17
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306matt
Regular Location: Frodsham Registered: 13 Feb 2007 Posts: 419 Status: Offline |
Post #10
Hi,I had the car for nearly 2 years without the fan coming on once. A fair few feeds had the 12v's down at the radiator connection, and my uncle is very sure that the fans should come on now when they warm enough. I just need a really hot day to test it. I have dissconected the compressor and also got rid of the pressure sensing valve. Thanks, Matt ________________________________________ Team Astor Front Mounted... Hybrid turbo on it's way. |
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Posted 31st May 2010 at 17:36
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jimmyboycheck
Regular Location: bournemouth Registered: 19 Apr 2009 Posts: 121 Status: Offline |
Post #11
tvrfan007 wrote: Were you having fan issues by chance, ie not switching on? I'm having issues with my fans for a second time. First time one fan had lost it's 12V feed so you got no fans (series) until it switched to parallel and the one working fan kicks in on overtime. This time the other fan has now decided it likes to run with the ignition off and the car locked. I have this issue were 1 fan starts slow then second fan kicks in overtime and the first stops?? ________________________________________ Silver 6 |
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Posted 1st Jun 2010 at 18:42
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smegal
Seasoned Pro  Location: Leeds Registered: 26 Dec 2005 Posts: 5,940 Status: Offline |
Post #12
This needs to be FAQ'd I had to use trial and error to do mine. Although I used a paperclip in stead of wire to bridge my points.________________________________________ Ex SC-6Now in a Megane R26 |
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Posted 1st Jun 2010 at 19:08
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snillet
Newbie  Location: Ytterby / Sweden Registered: 06 Apr 2010 Posts: 47 Status: Offline |
Post #13
davedgti6 wrote: *note* this does not turn on the fans when the outside temp goes below 5 degrees for some reason, -must be some form of safety thing built into the ecu, Probably the outside temp sensor, donīt know about newer models but on mine itīs inside the intake ducting to the fan, under all the plastic stuff in front of the windscreen. ________________________________________ Member of Peugeot Sport Club Swedenhttp://www.peugeot-sport-club.com/ My son: http://www.youtube.com/watch?v=jzjSBKkMHDA |
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Posted 9th Jun 2010 at 14:37
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306matt
Regular Location: Frodsham Registered: 13 Feb 2007 Posts: 419 Status: Offline |
Post #14
Hi all,Have been playing a little bit more with this, when I bridged the pins in the first place nothing happened, I did have the white connection to the AC pump disconnected. This weekend I reconnected the AC pump and having the bridge connected it made the Ac pump turn with the AC on. Should I have the AC pump connected to allow the AC button power the fan? As I am going to remove the AC pump ASAP, Many thanks, Matt ________________________________________ Team Astor Front Mounted... Hybrid turbo on it's way. |
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Posted 21st Jun 2010 at 23:04
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gti-dan
Regular  Location: Yorkshire Registered: 03 Jan 2010 Posts: 461 Status: Offline |
Post #15
where is the ac pump plug as i want to disconnect it (but still have the a.c button as a fan override) |
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Posted 13th Jul 2010 at 00:51
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cosmic spanner
Moral objector  Location: North London Registered: 11 Oct 2004 Posts: 10,399 Status: Offline |
Post #16
Roughly on top of the AC compressor, it's a white quite thin but long plastic connector.________________________________________ Democracy is two wolves and a lamb voting on what to have for lunch....Liberty is a well-armed lamb contesting the vote. Project é - my 306 project thread. |
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Posted 13th Jul 2010 at 15:03
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gti-dan
Regular Location: Yorkshire Registered: 03 Jan 2010 Posts: 461 Status: Offline |
Post #17
cheers - also, i have problems with my fans at the moment which im trying to sort out, i think it is the relays or bitron, and unplugging the blown plug doesnt get them on. I hoped bridging pins 1 and 3 on the a/c plug by the washer bottle would override but it didn't work - would this be expected if i had the relay / bitron problems? Cheers |
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Posted 15th Jul 2010 at 00:23
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cosmic spanner
Moral objector Location: North London Registered: 11 Oct 2004 Posts: 10,399 Status: Offline |
Post #18
Well yes, if you've got a fundamental wiring/motor/relay problem then bridging a sensor won't help  ________________________________________ Democracy is two wolves and a lamb voting on what to have for lunch....Liberty is a well-armed lamb contesting the vote. Project é - my 306 project thread. |
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Posted 15th Jul 2010 at 02:26
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306er
Senior User  Location: Brize norton/ caterham F1 Registered: 28 Jul 2007 Posts: 888 Status: Offline |
Post #19
Update to thisBridge pins 1&2 = low speed from both fans Bridge pins 1&3 = high speed from both fans Low speed didn't have no effect on cooling down for me. ________________________________________ |
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Posted 4th Jun 2011 at 20:30
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Rich E
Forum Admin Location: Hertfordshire Registered: 27 Apr 2005 Posts: 7,757 Status: Offline |
Post #20
306er wrote: Low speed didn't have no effect on cooling down for me. Can you elaborate on the scenario? A correctly working standard cooling system will control the temperature just fine in pretty much all situations, even in the height of summer (the same cooling system is fitted to the 306 in far hotter climates than ours). It's only the supercharged builds that seem to actually need extra cooling, and that's better achieved with a larger radiator rather than a botch job on the fans. ________________________________________ Rich |
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Posted 4th Jun 2011 at 20:48
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davedgti6
Seasoned Pro Location: whiston, prescot Registered: 28 May 2006 Posts: 1,651 Status: Offline |
Post #21
I am probably to blame for all this bodge'ing  , as Rich said if you are standard then getting the original system to work correctly is the way to go, the only reason I bodged mine was I found the original system was a little slow getting my temperatures down due to my large fmic in the way of the airflow, I have now fooked off the original system altogether and use an aftermarket (Revotec) adjustable temperature controller/sensor which I have set to turn both fans on at high speed at 95 degrees, the only reason I have done this is because of the supercharger conversion and there is no need for this on a standard motor,This setup works well on my car, pic of adjustable sensor in rad,  ________________________________________ Team Supercharged Gti-6 |
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Posted 5th Jun 2011 at 01:29
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