VTS conversion fan issue

1. Jigs2895 Established Member Joined: Jan 2013 Portsmouth Posts: 1335 1997 Mk1 VTS

   #1 5th November 2014, 17:18

   So, sorted my bleeding issue, thanks to some of the guys on here.
   
   Now, my fans are not coming on so the engine still gets close to overheating. Currently have twin fans, all wired up correctly. I have had them plugged in and i'm getting the correct voltage to the fans and I have also had the fans off and test run them and they run fine.
   
   I ran the MK2 set up before in my VTR which didn't have the radiator sensor like my current set up has. I have used 2 different sensors in the radiator now and they still don't kick in?
   
   For reference the fan loom has:
   
   1 Earth
   1 radiator sensor plug
   1 red wire going straight into a 30amp fuse which is not blown.
   
   Where is my issue? Last thing left to do on the car before MOT!
2. user_36078 Saxperience Post Whore Joined: Jul 2009 Costa Del Posts: 8010

   #2 5th November 2014, 17:20

   Intrigued at this question. Had the same problem on my old GTi, never found out the problem though, had an Auto electrician check the car over and eventually had to install a switch. Burnt out two fans in the end before the engine shat itself.
3. Jigs2895 Established Member Joined: Jan 2013 Portsmouth Posts: 1335 1997 Mk1 VTS

   #3 5th November 2014, 17:30

   Quote:

   Originally Posted by Dom Intrigued at this question. Had the same problem on my old GTi, never found out the problem though, had an Auto electrician check the car over and eventually had to install a switch. Burnt out two fans in the end before the engine shat itself.

   Thats my last resort but I really don't fancy having to manually turn the fans on all the time!
4. lewismonteith Frequent Poster Joined: Feb 2012 Portsmouth Posts: 568 1992 MX-5 1.6 SE

   #4 5th November 2014, 17:37

   Doesn't the fan run off a relay? Check that
5. Jigs2895 Established Member Joined: Jan 2013 Portsmouth Posts: 1335 1997 Mk1 VTS

   #5 5th November 2014, 17:40

   Tested the relay, fans work fine when wired up to a battery.
6. lewismonteith Frequent Poster Joined: Feb 2012 Portsmouth Posts: 568 1992 MX-5 1.6 SE

   #6 5th November 2014, 17:40

   Failing that temp sensors
7. Jigs2895 Established Member Joined: Jan 2013 Portsmouth Posts: 1335 1997 Mk1 VTS

   #7 6th November 2014, 15:20

   Bump!!
8. Gandi699 Saxperience Post Whore Joined: Apr 2011 Posts: 9100 Amazon green VTR 16v, Inferno RS clio 182

   #8 6th November 2014, 15:30

   put a switch or piece of wire to bridge it in place of the resistance switch/sensor that sits in the rad. if it works when you flip it or put it in, you know its the sensor
9. Dany4494 Established Member Joined: May 2012 West Yorkshire Posts: 1806 Civic EP2

   #9 6th November 2014, 16:14

   Earth fan to bonnet catch run a live steight from battery just disconnect battery on a night job done /thread
10. Ali123 Saxperience Forum Bum Joined: May 2011 huddersfield Posts: 2635 ph3'd c2 gt

    #10 6th November 2014, 16:53

    Or run an mk1 fan set up with the fan switch in the rad, hook fans up to that, live from fuse box and earth behind headlight, works a treat and never failed for me
11. Hazmanscoop Established Member Joined: Oct 2008 Witney Posts: 2481 Black VTS

    #11 6th November 2014, 16:53

    The overheatings obviously because you can't bleed the system properly due to the fan not working.
    
    Garage had this problem on mine as the relay was corroded. They just installed a switch and it's now sorted. Only ever have to turn the fan on when sitting in traffic. Which is never...
12. Jigs2895 Established Member Joined: Jan 2013 Portsmouth Posts: 1335 1997 Mk1 VTS

    #12 6th November 2014, 16:54

    Quote:

    Originally Posted by Gandi699 put a switch or piece of wire to bridge it in place of the resistance switch/sensor that sits in the rad. if it works when you flip it or put it in, you know its the sensor

    Ill give this a go. Been through 2 switches so far so I'd hope its not the switch.
    
    Bugging me now!!
13. Tom5190 Saxperience Post Whore Joined: Sep 2007 Someones Bumhole Posts: 5721 Mk2 16v Desire

    #13 6th November 2014, 20:24

    Anybody got a photo of a mk1 vts fan wiring loom?
14. Jigs2895 Established Member Joined: Jan 2013 Portsmouth Posts: 1335 1997 Mk1 VTS

    #14 6th November 2014, 20:48

    Quote:

    Originally Posted by Ali123 Or run an mk1 fan set up with the fan switch in the rad, hook fans up to that, live from fuse box and earth behind headlight, works a treat and never failed for me

    Thats the set up I'm running.
15. Ali123 Saxperience Forum Bum Joined: May 2011 huddersfield Posts: 2635 ph3'd c2 gt

    #15 6th November 2014, 20:52

    then it cant not run, as soon as the fan switch gets upto tempratue it'll complete the circuit and it would run
    
    as in sack off the standard loom, make the wiring your self
    
    also have you tested the rad sensors that youve replaced to make sure they work 100%?
16. Mickswan Saxperience Forum Bum Joined: Apr 2013 Jarrow Posts: 4022 2003 Icelandic Grey 16v VTR 1991 Daihatsu GTti

    #16 6th November 2014, 20:56

    Mk1 direct to the fuse box!
    
    
    
    Mk2 with all the earths and loom plug
    
    
    
17. Jigs2895 Established Member Joined: Jan 2013 Portsmouth Posts: 1335 1997 Mk1 VTS

    #17 6th November 2014, 21:12

    Quote:

    Originally Posted by Ali123 then it cant not run, as soon as the fan switch gets upto tempratue it'll complete the circuit and it would run as in sack off the standard loom, make the wiring your self also have you tested the rad sensors that youve replaced to make sure they work 100%?

    I haven't tested them, their opening point is just under 100 degrees and by the time I have poured the boiled water into the cup and got the multimeter on it I'm below 100 degrees so i'm struggling to test the switch.
    
    I think I am going to re-bleed the rad (thinking maybe a airlock might be stopping the sensor get to the correct temperature) and double check all my fuses. No reason for it to not work though, can't make sense of it at all.
18. Ali123 Saxperience Forum Bum Joined: May 2011 huddersfield Posts: 2635 ph3'd c2 gt

    #18 6th November 2014, 21:28

    why not get someone to pour the water into the cup while youve got the multimeter on it?
19. Gandi699 Saxperience Post Whore Joined: Apr 2011 Posts: 9100 Amazon green VTR 16v, Inferno RS clio 182

    #19 6th November 2014, 21:55

    Yeah make your own circuit with a relay it's what I did. Test the resistance of the switch in situ when hot
    
    
    Sent from my iPhone using Tapatalk

    1 user thanked this post: Ali123
20. Jigs2895 Established Member Joined: Jan 2013 Portsmouth Posts: 1335 1997 Mk1 VTS

    #20 6th November 2014, 22:08

    Plan for tomorrow:
    
    Get a new rad sensor
    Re-bleed all of the rad.
    Have a good look at all the wiring again
    Check all the cooling related fuses again
    Replace the current Vtr engine bay fusebox with the VTS fusebox.
    
    Fingers crossed that should sort my issue, if not, they will be wired up to a switch!
21. Ali123 Saxperience Forum Bum Joined: May 2011 huddersfield Posts: 2635 ph3'd c2 gt

    #21 6th November 2014, 22:18

    if it still fails dude and the fan switch works as it should just make a little circuit with the fan switch like i mentioned earlier on rather than having a switch in the car

    1 user thanked this post: Jigs2895
22. Jigs2895 Established Member Joined: Jan 2013 Portsmouth Posts: 1335 1997 Mk1 VTS

    #22 6th November 2014, 22:22

    Perfect, cheers pal. Suppose you only need it in traffic anyway.