Craigo 0 Posted January 21, 2009 the fan on my car does not seem to cut in when the temps rise, so i would like to wire a switch in so i can control when the fan comes on and off, has anyone done this? if so any instructions?? thanks Share this post Link to post Share on other sites
BERTMAN 40 1 Cars Posted January 21, 2009 you could just replace the thermo switch in the radiator? 10min job... Share this post Link to post Share on other sites
welshpug 1,737 Posted January 21, 2009 as above, dont bother wiring in a switch, check the power feed, the thermo switch and the low speed resistor. dont forget that it takes a fair bit to get the fans on this time of year, and that 90 degrees is a fair way up the gauge, which mark is it pointing to? Share this post Link to post Share on other sites
pug_ham 245 3 Cars Posted January 21, 2009 They show fairly high temp on the guage before the cooling fan cuts in, about one line off the red often but check your fans works before starting to change anything. There should be a brown plug hanging loose in the engine bay near the n/s headlamp, bridge the centre & either outer pin to run the fan at low or high speed. If you choose to wire in a manual switch this topic should help out. Graham. Share this post Link to post Share on other sites
philfingers 5 Posted January 21, 2009 (edited) They show fairly high temp on the guage before the cooling fan cuts in, about one line off the red often but check your fans works before starting to change anything. There should be a brown plug hanging loose in the engine bay near the n/s headlamp, bridge the centre & either outer pin to run the fan at low or high speed. If you choose to wire in a manual switch this topic should help out. Graham. I was just fitting my fans back in yesterday. What is this loose plug for Graham? I have one fan fitted as std and the other one is on a fused manual switch (relayed) if required. Shouldn't need it tho! Edited January 21, 2009 by philfingers Share this post Link to post Share on other sites
DrSarty 113 1 Cars Posted January 21, 2009 Yeah. Fix the problem; don't try and work round it. They work just fine with a functioning fan and solid state thermoswitch in the rad. Your problem will be something far simpler than wiring in a switch. Check the fan(s) first - as there are no fuses IIRC, which is slightly strange - and then find a replacement thermoswitch. If still no joy it'll be a wiring/connector fault, and it's all very easy to get to. Best of British. Share this post Link to post Share on other sites
pug_ham 245 3 Cars Posted January 23, 2009 What is this loose plug for Graham? No idea, other than a test circuit or manual over-ride so you can switch the cooling fan on when working on the engine with it running for any reason. Graham. Share this post Link to post Share on other sites
