Mike Walker 0 Posted July 2, 2007 Is this the thermostatic fan switch? Share this post Link to post Share on other sites
hengti 2 Posted July 2, 2007 that'll be the resistor for either the fan or the dim dip headlamps the switch is screwed into the rad itself Share this post Link to post Share on other sites
Mike Walker 0 Posted July 2, 2007 will go have another look then, cheers Share this post Link to post Share on other sites
Rob_the_Sparky 9 Posted July 2, 2007 The is the slow speed fan resistor. The switch is just under the top hose, quite close to this resistor. Rob P.S. Is your slow speed fan working? I'd have expected it to melt that tyrap if it were... Share this post Link to post Share on other sites
Mike Walker 0 Posted July 2, 2007 (edited) The fans aren't working at all now. Just been out and found the switch which has amongst other things some wires coming out of it and going to this connector which isn't plugged into anything, connector has the red wire i'm holding coming out of it which isn't connected to anything either. Don't know if this is just a classic Peugeot random wire/connector to nothing or whether it should be plugged in somewhere? Wiring diagram appears to show wire to earth, one to battery, one to resistor and one to motor so I should be able to work it out just need to find battery for multimeter! Edited July 2, 2007 by Mike Walker Share this post Link to post Share on other sites
jackherer 543 Posted July 2, 2007 Don't know if this is just a classic Peugeot random wire/connector to nothing or whether it should be plugged in somewhere? That looks like the fan diagnostic connector, which is exactly what you've described, a wire to nowhere, they are normally cable tied to the battery positive wire facing upwards by the battery terminal. Share this post Link to post Share on other sites
Rob_the_Sparky 9 Posted July 2, 2007 The fans aren't working at all now. Just been out and found the switch which has amongst other things some wires coming out of it and going to this connector which isn't plugged into anything, connector has the red wire i'm holding coming out of it which isn't connected to anything either. Don't know if this is just a classic Peugeot random wire/connector to nothing or whether it should be plugged in somewhere? Wiring diagram appears to show wire to earth, one to battery, one to resistor and one to motor so I should be able to work it out just need to find battery for multimeter! The brown connector is for testing the fans, it isn't normally connected to anything. Rob Share this post Link to post Share on other sites
Rob_the_Sparky 9 Posted July 2, 2007 Hi guys, I have a tempreature related question too. I will change my ECU temp sender on my Mi16 (BX16v) as an attempt to cure my overfuelling. The previous owner said the car has a cold temp sensor - what does this mean? and whats the difference to a standard temp sensor? Can i just buy a new 'normal' temp sensor? My fan cuts in on third bar, could this cause overfuelling too, or is this reasonable? PS: sorry for lots of questions, but this place is a haven for learning technical knowledge! Please create a new thread... FYI: ECU temp sensor has nothing to do with the fans but there are various fan switchs avaiable with different switch temperatures. Some kick in earlier than others and this is probably what the guy was on about. The fans have nothing to do with fuelling as (as already stated) the ECU temp sensor is not connected with the fan operation. Share this post Link to post Share on other sites
Mike Walker 0 Posted July 2, 2007 Cheers for clearing that up, I suspect the fan switch but will try to confirm with the multimeter think i'll also move that resistor away from the rad!! Share this post Link to post Share on other sites
jackherer 543 Posted July 2, 2007 don't move it too far, it gets really hot so it needs to be in the airflow from the grille/fan. Share this post Link to post Share on other sites
Mike Walker 0 Posted July 3, 2007 don't move it too far, it gets really hot so it needs to be in the airflow from the grille/fan. No worries, cheers for the advice Share this post Link to post Share on other sites
Rob_the_Sparky 9 Posted July 3, 2007 It is should be on a metal clip to the rad and will dump heat into the rad via the clip, not the other way around. I had a car arrive with a duff alarm because that resistor had melted its way through a wiring loom! E.g. it get VERY hot. Rob Share this post Link to post Share on other sites
silent_running 0 Posted July 7, 2007 Got a problem with fans not cutting in and overheated coolant (on the half way rather than 1/3 mark all the time, even though we've just fitted a new rad and thermostat). If this resistor wasn't working or wasn't connected properly, could it cause the fans not to work at all? And which wires are supposed to be connected to it? It seems there are three pins on one side and two pins on the other, impossible to tell which way round to connect it! Cheers! Share this post Link to post Share on other sites
Rob_the_Sparky 9 Posted July 9, 2007 It only controls slow fan speed, high speed comes in quite late on some switches though. Share this post Link to post Share on other sites
