displaying posts 1 to 9 of 9

Author Subject: Anyone know how to wire both fans together?
lurch86

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Location: Herne Bay, Kent

Registered: 22 Nov 2010

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Post #1
Hello, while I am changing the radiator I thought it would be a good idea to sort the fans out. Anyone know a good way to make the fans both work together?

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Lydden Hill 31/10/2015 Last Track day
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Posted 11th Oct 2017 at 14:38
scotzman

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Location: Dundee

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Post #2
They do work together, or they should do.

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Posted 11th Oct 2017 at 15:04
welshpug!

Capt Pedantic

Location: Bigend, Wales.

Registered: 27 Mar 2007

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Post #3
yes, they will do as standard, so you just need to fix them not bodge it up.

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Posted 11th Oct 2017 at 15:50
lurch86

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Location: Herne Bay, Kent

Registered: 22 Nov 2010

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Post #4
Well I had a fiddle with the relays and both fans kicked in. Strange thing is, when it was only 1 fan working that fan sounded like it was full speed. When the 2 work together it sounds like they're on half speed..? Perhaps they're meant to work like that in case 1 fails the other works faster to compensate? Anyway, new rad is in and bled and working well and the fans kick in and cool it down fast. Now for MOT and the next Track day, can't wait!!

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Posted 12th Oct 2017 at 09:29
demondriverdan

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Post #5
If they're in serial it might make sense that they run slower when both on

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Posted 12th Oct 2017 at 12:54
lurch86

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Location: Herne Bay, Kent

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Post #6
Thanks. Hello Dan, How's the track car coming along? Been a while since I spoke to you?

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Posted 12th Oct 2017 at 13:20
welshpug!

Capt Pedantic

Location: Bigend, Wales.

Registered: 27 Mar 2007

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Post #7
the way they work typically is they switch from series to parallel to alter the speeds, so I would be replacing the relays and checking the contacts in the round plug on the fan cowling.

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Posted 12th Oct 2017 at 18:01
lurch86

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Post #8
ok, Cheers. I'll look into it

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Posted 13th Oct 2017 at 10:02
tvrfan007

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Registered: 29 May 2005

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Post #9
They work in half speed series for stage 1, then full speed parallel for stage 2. The fact only 1 fan runs at full speed on stage 2 tells you that the second fan is missing it's 12V feed. I had this on my HDi, and as Mei infers it was a corroded pin on the fan loom connector by the nearside chassis leg.

Fan wiring is available here:

http://www.peugeotlogic.com/workshop/wshtml/electric/ac306/coolfan2/fanop1.htm

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