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Fans not working - Printable Version

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+--- Thread: Fans not working (/showthread.php?tid=31646)



Fans not working - Matt - 20-08-2015

What's the first thing to look for? They don't kick in when up to temperature 

Is there a relay or fuse?


RE: Fans not working - ginge191 - 20-08-2015

(20-08-2015, 03:46 PM)Matt Wrote: What's the first thing to look for? They don't kick in when up to temperature 

Is there a relay or fuse?

Rewire manually to AC button. done.

Oh...rallye... you're doomed!

But seriously. Just wire into a manual switch


RE: Fans not working - Matt - 20-08-2015

How do I go about that? Tap into standard wiring?


RE: Fans not working - pug306driver - 21-08-2015

apparently if the temp sensor terminal to the right and lower down to the thermostat is disconnected, the fans will come on as a fail safe??

also expansion tank thread, disconnect the terminal plug on the air con thingimmy on the lhs by the front wing/headlight, and bridge certain terminals in that, if you then press the air con button, the fans will come on??

I had a concern recently about the fans not coming on.

with the engine hot and temp gauge showing nearly 100, the fans didn't come on ( cuts in 98 degrees?? and cuts out 92 degrees? ) so I fiddled with the temp gauge terminal mentioned, and the fans can one.....maybe temp was reached when I touch the terminal; or maybe terminals where as bit loose and dodgy connection, I dont know....

craig says...if you look in the o.s.f wing there is a air con pipe with a connector on it (behide the head light) , pull it off and put a wire on pins 1 and 3, put the air con on and the fans should come on.

I will try this this weekend.


RE: Fans not working - Matt - 21-08-2015

Unfortunately I have no air con, I have a rallye. Therefore cannot make a switch from the aircon. And also can't pull the brown plug Sad


RE: Fans not working - Poodle - 22-08-2015

Pull the temp sensor Matt. There is a fuse, big one, check it. Failing that, is there power from the relay? Then see if you can start the fan by hand (carefully, mind lol).


RE: Fans not working - Matt - 22-08-2015

Okay, I've got a late start at work tomorrow so will give it all a try and have a look Smile


RE: Fans not working - Jonny81191 - 23-08-2015

(20-08-2015, 03:58 PM)ginge191 Wrote:
(20-08-2015, 03:46 PM)Matt Wrote: What's the first thing to look for? They don't kick in when up to temperature 

Is there a relay or fuse?

Just wire into a manual switch

Or fix it. Maybe that'd help. 

As has been said, check the fuse. Failing that, it's likely to be the temp sensor. Check it by unplugging it, the fans should run (blue plug on the thermostat housing).


RE: Fans not working - mattbarker32 - 24-08-2015

Dont know if this will help

http://www.peugeotlogic.com/workshop/wshtml/electric/ac306/coolfan2/fanop1.htm

Hope it works has a few diagnostic drawings hope the link works


RE: Fans not working - welshpug - 24-08-2015

(23-08-2015, 10:09 PM)Jonny81191 Wrote:
(20-08-2015, 03:58 PM)ginge191 Wrote:
(20-08-2015, 03:46 PM)Matt Wrote: What's the first thing to look for? They don't kick in when up to temperature 

Is there a relay or fuse?

Just wire into a manual switch

Or fix it. Maybe that'd help. 

As has been said, check the fuse. Failing that, it's likely to be the temp sensor. Check it by unplugging it, the fans should run (blue plug on the thermostat housing).

nope, thats for the gauge.

thermoswitch is in the rad, unplug it ans check with a multimeter that you have 12 v to one pin.

if you do, bridge to either of the other two pins and the fan relay should be activated as long as a) good relay b) good earth.

secondly if the fans don't come on when doing the test above (amd you do have good relay & earth) then check for power to the fan relay, and also for a circuit to earth through the fan. if that is present, dead fan.

if the fans did work when doing first test, fit new thermoswitch.


dont bodge it.

(24-08-2015, 06:24 AM)mattbarker32 Wrote: Dont know if this will help

http://www.peugeotlogic.com/workshop/wshtml/electric/ac306/coolfan2/fanop1.htm

Hope it works has a few diagnostic drawings hope the link works

nope, thats for ac models.


RE: Fans not working - insomaniac45 - 12-09-2015

(21-08-2015, 11:48 AM)pug306driver Wrote: also expansion tank thread, disconnect the terminal plug on the air con thingimmy on the lhs by the front wing/headlight, and bridge certain terminals in that, if you then press the air con button, the fans will come on??


I did this and i only have 1 fan coming on, what is the first thing for me to check? i now have a semi decent multi meter. 

If i pull the brown plug on the thermostat, both fans come on, 

What do you recommend i do first?

btw - i am air con. (air con in a cabby....... yeah i know.)


RE: Fans not working - Matt - 13-09-2015

Well fans work, just don't come on till 110+
Have a new fan switch to go in, just haven't put it in yet Smile


RE: Fans not working - ginge191 - 13-09-2015

(13-09-2015, 01:24 AM)Matt Wrote: Well fans work, just don't come on till 110+
Have a new fan switch to go in, just haven't put it in yet Smile

I'm sure that the high speed switch, there should be a low speed swtich also which kick in around 95-100?
I maybe wrong... but sure there was 2 levels... hmmm


RE: Fans not working - Matt - 14-09-2015

The rally's only has one fan... Maybe it's wired wrong?


RE: Fans not working - MY95 - 14-09-2015

How do you wire the fans to the AC button?
Been looking to get a 12" slimline for my HDI and wire it to the AC button but theres not much detail about it on here after some research.


RE: Fans not working - ginge191 - 14-09-2015

(14-09-2015, 01:48 AM)Matt Wrote: The rally's only has one fan... Maybe it's wired wrong?

Well, a slow and a fast speed i mean..?


RE: Fans not working - Matt - 14-09-2015

I thought the slow speed was one fan and fast was the pair? I'm probably wrong though


RE: Fans not working - insomaniac45 - 15-09-2015

(14-09-2015, 04:13 PM)MY95 Wrote: How do you wire the fans to the AC button?
Been looking to get a 12" slimline for my HDI and wire it to the AC button but theres not much detail about it on here after some research.

from the front, behind the driver side head lamp, there is a 4 pin plug on one of the AC pipes. Disconnect it, and bridge pins 1 and 3. switch on the AC and the fan will come on in about 5-10 seconds. If it does not, try pins 4 and 2, (as there is no identification for 1,2,3, or 4  Undecided ) 

It may only chuck on 1 fan, but this is more than enough for my 2.0l to cool down, 

I just need to start finding out why my system is not working at all.... no high speed, no low speed, i know the fans work, but thats about it.


RE: Fans not working - MY95 - 15-09-2015

Thanks Insomaniac , I understand all that but what are we bridging those pins with? Already have it disconnected as have removed AC 



RE: Fans not working - Toms306 - 15-09-2015

Small piece of wire? Unbent paperclip?


RE: Fans not working - MY95 - 15-09-2015

Do you not need to bridge it with the Fan wiring though?


RE: Fans not working - Toms306 - 15-09-2015

It's a bridge between the pins, don't have to touch any wiring.


RE: Fans not working - MY95 - 15-09-2015

Thanks Tom, will give it a go


RE: Fans not working - insomaniac45 - 15-09-2015

it may take a few seconds for the fans to kick in, but you have to have the AC button in for them to work Smile