Technical help Q & A Got A technical problem with you car? Keep it in here where the techies hang out and we will try to solve it for you!!

No fans on cosworth

Thread Tools
 
Search this Thread
 
Old Mar 14, 2008 | 01:03 PM
  #1  
davcos's Avatar
davcos
Thread Starter
Wahay!! I've lost my Virginity!!
 
Joined: Dec 2007
Posts: 63
Likes: 0
Default No fans on cosworth

Hi,
The fans have stopped working on my cossie , i replaced the fan switch and plug and still not working . The fans them selfs are working i had them tested so they seem ok . Any ideas guys i need some help on this please.

Regards

Dave.
Reply
Old Mar 14, 2008 | 05:42 PM
  #2  
cozmeister's Avatar
cozmeister
More boost Igor!
iTrader: (1)
 
Joined: Jun 2005
Posts: 3,100
Likes: 1
From: In my Cosworth
Default

Check the 30 amp fuse and the relay...When they start up they draw the momentary limit of the fuse's rating, doing that enough times eventually pops the fuse.
Reply
Old Mar 14, 2008 | 06:22 PM
  #3  
tabetha's Avatar
tabetha
20K+ Super Poster.
 
Joined: Jul 2006
Posts: 24,596
Likes: 4
From: uk
Default

They are famous for burning out the wiring to the fans, at the fusebox as it is a crap design by ford, it can't handle the power drawn by the fans.
The best thing to do is make yourself a new bit of wiring/relay(bypass fusebox) for them, dead easy to do, couple of hours work at most, for total reliability.
tabetha
Reply
Old Mar 15, 2008 | 12:02 PM
  #4  
davcos's Avatar
davcos
Thread Starter
Wahay!! I've lost my Virginity!!
 
Joined: Dec 2007
Posts: 63
Likes: 0
Default

Hi . so what are you saying to put a switch inside the car for them.

dave.
Reply
Old Mar 15, 2008 | 02:20 PM
  #5  
Lee Ivatt's Avatar
Lee Ivatt
Shizzle My Nizzle
iTrader: (1)
 
Joined: Aug 2006
Posts: 3,755
Likes: 0
From: ESSEX
Default

duno if you got an escos, of saff.
but i had the same problem on my escos last week.

the wires to the fan we completly knackered, as was the switch (looks like a small water leak had slowly corroded them. the fans worked with air con but not on cooling circuit.

simply replaced the wires, work fine now. Duno if saffs the same but on escos there a green relay behind the battery which controls the fans, may be worth checking that?
Reply
Old Mar 15, 2008 | 02:55 PM
  #6  
tabetha's Avatar
tabetha
20K+ Super Poster.
 
Joined: Jul 2006
Posts: 24,596
Likes: 4
From: uk
Default

You can put a switch inside the car if you want an overide switch but keep them as auto through rad switch, that is what I meant, just use rad switch to switch a relay.
tabetha
Reply
Old Mar 16, 2008 | 04:04 PM
  #7  
Phil2002's Avatar
Phil2002
I've found that life I needed.. It's HERE!!
iTrader: (3)
 
Joined: Oct 2007
Posts: 1,459
Likes: 0
From: Kent
Default

I'd use an after market fan controller to control the fan. firstly you can adjust the kick in temp of the fan and over ride it to turn the fan on constantly ideal for track days and traffic jams. only cheap check out this e bay item number 280196372826
Hope this helps
Reply
Old Mar 16, 2008 | 04:46 PM
  #8  
COLEYST200's Avatar
COLEYST200
PassionFord Post Whore!!
iTrader: (3)
 
Joined: Sep 2007
Posts: 8,243
Likes: 144
From: Leicestershire
Default

IF you ring RYAN he makes a loom that dose the job spot on
Reply
Old Mar 17, 2008 | 06:18 AM
  #9  
tabetha's Avatar
tabetha
20K+ Super Poster.
 
Joined: Jul 2006
Posts: 24,596
Likes: 4
From: uk
Default

If you are not up to doing a(simple) loom, then best let someone else do it, as important.
If I were doing any track work I wouldn't be using a shonky old weber marelli ecu anyway, many aftermarket ecu's have fan control, and after run.
tabetha
Reply
Old Mar 17, 2008 | 07:52 AM
  #10  
NEEDFORSPEED's Avatar
NEEDFORSPEED
PassionFord Post Troll
 
Joined: Mar 2006
Posts: 3,176
Likes: 2
From: st.annes, blackpool
Default

they mean like this mate keeping it away from the fuse box. even though im using fans that are going to draw alot lesss current than standard stil using 2x relays and 2x fuses and an override switch inside.

Reply
Old Mar 18, 2008 | 08:36 AM
  #11  
tabetha's Avatar
tabetha
20K+ Super Poster.
 
Joined: Jul 2006
Posts: 24,596
Likes: 4
From: uk
Default

Like that but DON'T put them there, as it is a stupid place subject to water ingress.
I mounted my SINGLE relay by the battery, I suppose if you want double redundancy then two relays with one controlling each fan is a good idea, as you will still have one fan should the relay/other fan pack up.
tabetha
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Focosmitch
Ford Focus RS Parts for Sale.
5
Mar 9, 2016 01:03 PM
Focosmitch
Cars for Sale
9
Nov 5, 2015 08:12 PM
Focosmitch
Ford RS Cosworth Parts for Sale
5
Nov 3, 2015 04:08 PM
wheelwizardrefurbs
Technical help Q & A
2
Sep 5, 2015 10:52 AM




All times are GMT. The time now is 05:34 PM.