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Hirtag

Member

Registered: 2019-06-26

Posts: 1

Radiator fans not coming on?

I have a NuVenture campervan on a Citroen Dispatch 1.9td 1998. Just got back from France and noticed that the radiator fans not coming on. Its a new radiator and a new switch but got it running and it went to about 95 degrees but nothing. The sensor is a three wire one and i put a meter on the plugs three pins but nothing? I looked at all the big fuses that are behind the battery but all good. Any ideas?

JohnDragonMan

Member

From: Derby, East Midlands, UK

Registered: 2020-06-02

Posts: 456

Website

Re: Radiator fans not coming on?

im not sure what they come on at. it must be over 100.c  i have never had mine come on and i know they work.. the fans have 2 speeds too!

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- JohnDragonMan
Notice: I have the tendency to void warranties, blow fuses, cause fires, and other fun stuff.
Words of wisdom: Internally rust proof the sills and subframe! both skins!!. There's always user serviceable parts inside. "Oh that shouldn't have happened".
My 2005 Dispatch Camper Project

RegW

Member

From: Bristol

Registered: 2024-04-21

Posts: 359

Re: Radiator fans not coming on?

My info on the 2.0 HDI says the stage one fan cuts in at 94C and out at 87C
while the stage two fan cuts in at 97C and out at 94C
The warning light should come on if the coolant temp reaches 110C
I haven't had a close look at the cooling electrical system but a quick glance
shows an ecu monitoring a PTC temp sensor and switching fan relays depending on
the temperature readings it gets.

It's possible the 1998 1.9td has a simpler system, which may use a pre set thermo switch to
controlling a relay for the fan, but have too little info on what Hirtag actually has under the bonnet
Maybe they all use an ECU control system? dunno.

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When all else fails, RTFM  - 2006 Expert 2.0 HDI/110