306 coolant fan control - advice please ?

[Nick Lawson]

I have had similar problems with my fans on my 205 TD.

It was the thermal switch mounted on the radiator that had failed. I have had several over recent years, and after getting sick of keep swapping them I have replaced the Peugeot switch with two thermal switches I bought from Farnell (see farnell.com). I mounted these at the top of my radiator, on a flange bit. It means a bit of wiring, but much more reliable.

Nick
94 205 TD

 

[Steve B]

Hi Nick,
Thanks for the advice!
Unfortunately the addition of the air con makes things a bit more complicated ;-( I believe that there is a different type of termperature sensor (thermistor as opposed to a simple switch) which feeds to a control box. This in turn decides whether to run the two fans wired in series (slow) or parallel (fast) using the relays I found. The control box used to be a separate thing made by Bitron, although I'm not sure whether Pug use these any more, or whether the main engine ECU controls the fans. I'd like to be able to get enough information to test the special sensor.

Cheers,

- Steve