sonofsam 5 Posted November 13, 2006 Hi All, After fitting a new ( Lower temp ) Radiator fan switch and getting the fan to finally kick in:D I read a post were you can simply join the two wires together going to the resistor thus having the fan come on at high speed only?Is this right?Anyone done this mod? BTW, Camberley auto factors are a great place to pick up lower temp switches as they dont mind going through the books to find the corret one with the right plug end on:D Cheers Sam. Share this post Link to post Share on other sites
jackherer 543 Posted November 13, 2006 yeah thats how I wire them up, you just need to remove the resistor and bridge it like you said. Pros are increased reliability and faster cooling in traffic, the only con I can think of is increased noise but I also see that as a pro because you get used to the louder fan and if it stops working you're more likely to norice... Share this post Link to post Share on other sites
sonofsam 5 Posted November 13, 2006 Cool cheers Kieran:) Yes didn't realise how quiet the low speed fan was.High speed fan stayed on for atleast 10 minutes after I turned the engine off!But on normal driving the temp gauge doesn't go above 1/4 of the dial:D soon rises at idle though. Share this post Link to post Share on other sites
inferno 1 Posted November 13, 2006 why would you need to match the plug end? i always wire up the switch from the doner car and patch the loom... what temps are you running on stat and rad switch though, and are you running water oil cooler or water turbo pipes? Share this post Link to post Share on other sites
sonofsam 5 Posted November 13, 2006 (edited) Because there are about 8 different types, and I wanted to match the correct one for the plug that was there already there as part of the 205 loom:) Dont know stat temp! fan switch is the one: slow on at 84 and off at 79 - fast on at 88 and off at 83 Water turbo pipes and soon to be air>oil cooler. Edited November 13, 2006 by sonofsam Share this post Link to post Share on other sites
tom_m 0 Posted November 13, 2006 (edited) i ditched the twin stage switch for a single low temp (well i thought it was a low temp, when i put it in it was a standard 90 one but it works fine so hey...) and wired my own loom with a second fan on a switch as a backup sounds like a bloody hovercraft with both fans on full speed! but it ain't going to over heat! Edited November 13, 2006 by tom_m Share this post Link to post Share on other sites
welshpug 1,657 Posted November 13, 2006 Because there are about 8 different types, and I wanted to match the correct one for the plug thatwas there already there as part of the 205 loom:) Dont know stat temp! fan switch is the one: slow on at 84 and off at 79 - fast on at 88 and off at 83 Water turbo pipes and soon to be air>oil cooler. do you have the part number to hand for that one? what make was it in the end? Share this post Link to post Share on other sites
sonofsam 5 Posted November 13, 2006 (edited) Pug part No:1264 27 - slow on at 84 and off at 79 - fast on at 88 and off at 83 Mine is a make: Ci. Part no. XEFS210 Equiv. INTR 50105, thats from the box:) Infact Here's the rest.Just for future searches:D 1264 16 - slow on at 84 and off at 79 - fast on at 88 and off at 83 (pre-1990) 1264 17 - slow on at 88 and off at 83 - fast on at 92 and off at 88 (pre-1990) 1264 18 - slow on at 93 and off at 88 - fast on at 97 and off at 92 (pre-1990) 1264 22 - slow on at 97 and off at 92 - fast on at 101 and off at 96 (pre-1990) 1264 27 - slow on at 84 and off at 79 - fast on at 88 and off at 83 (1990 on) 1264 45 - slow on at 97 and off at 92 - fast on at 101 and off at 96 (1990 on) Edited November 13, 2006 by sonofsam Share this post Link to post Share on other sites
Edp 67 3 Cars Posted November 13, 2006 (edited) I did this. I removed the resistor and associated wiring. The way I see it is if the fans are on i want them on properly and not half speed. Car will never overheat now and the needle dosen't go past 85' ever Twin fans are the way forward too. Edited November 13, 2006 by Edp Share this post Link to post Share on other sites
boombang 2 Posted November 13, 2006 How well do the fans cope with no resistor in the setup? My fan wiring in the 309 when I got it was non-existant so have made up a hardcore heavy duty loom for it, but with no resistors at all. Have been wondering if I should put one in? Share this post Link to post Share on other sites
welshpug 1,657 Posted November 13, 2006 I was wondering that too Alex, cant be good for the fans to be getting a direct full power to start rather than the half power through the resistor. Share this post Link to post Share on other sites
boombang 2 Posted November 13, 2006 Only thing I can think of is that the fans will spin too fast and self-destruct. Share this post Link to post Share on other sites
welshpug 1,657 Posted November 13, 2006 dont think so as they receive full power when the second stage opens and feeds them directly. Share this post Link to post Share on other sites
boombang 2 Posted November 13, 2006 They do? ah right so I'm worrying about nothing! Share this post Link to post Share on other sites
jackherer 543 Posted November 14, 2006 The resistor is ONLY there to make the car a bit more refined, it serves no other purpose. Share this post Link to post Share on other sites
tom_m 0 Posted November 14, 2006 yeah when the fans are on high speed theres nothing to protect them from the full current, don't worry about that. its the switches that burn out after a while, but they are easy to replace Share this post Link to post Share on other sites
inferno 1 Posted November 14, 2006 is it wise to run this lower temp then? 1264 16 - slow on at 84 and off at 79 - fast on at 88 and off at 83 (pre-1990) as when i had my zx i used a twin 205 fan setup with this switch! 1264 45 - slow on at 97 and off at 92 - fast on at 101 and off at 96 (1990 on) or may have been higher, cost me 17£ and kept the car running sweet. Share this post Link to post Share on other sites
sonofsam 5 Posted November 14, 2006 I dont feel the need for twin fans, maybe in the summer:D Share this post Link to post Share on other sites
Rob_the_Sparky 9 Posted November 15, 2006 Easiest mod (bit of a bodge but done on my shed 205) is to take the resistor out and put in a bit of wire across the terminals. I trimmed down standard crimps till they fitted. 10 minute job... Rob P.S. My decent 205 runs a cooler switch (can't remember which I'm afraid) but the slow speed fan is on most of the time and in hot weather it stays on for 20 minutes after parked up. A bit of a pain but at least it doesn't over heat! Share this post Link to post Share on other sites
