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Model specific boards => Golf mk2 => Topic started by: Josh g on 11 February 2015, 21:44

Title: mk2 1.3 golf
Post by: Josh g on 11 February 2015, 21:44

 I have got a mk2 1.3 golf and the fan doesn't come on when it's up to temperature I know the fan works because I linked it straight to the battery have read up on it can't seem to find a straight answer for  it but by the sounds of it its the coolant temp sensor but I don't get how it could be that if it reads it's up to temperature or is there a thermal switch for the cooling fan if so where would I find it ?

Title: Re: mk2 1.3 golf
Post by: VW BUSH on 11 February 2015, 22:04

Its a switch normally on the rad near the fan on the bigger engines :smiley:

Title: Re: mk2 1.3 golf
Post by: Josh g on 12 February 2015, 15:45

Is that the one half way down the rad with on the battery/passenger side?

Title: Re: mk2 1.3 golf
Post by: Josh g on 12 February 2015, 18:48

Swapped it with the one off my 1.6 driver that know works but the fan still doesn't come on any ideas?

Title: Re: mk2 1.3 golf
Post by: VW BUSH on 12 February 2015, 19:45

Start checking the wires and plugs back from the fan and switch.
Helps if you have a meter

Title: Re: mk2 1.3 golf
Post by: Josh g on 12 February 2015, 19:54

Okay thanks will try that when I next get chance

Title: Re: mk2 1.3 golf
Post by: Santiago on 14 February 2015, 22:01

The fan shouldn't come on until the engine is well above normal operating temperature. Are you sure it's getting hot enough that the fan should be operating? Somewhere between 2/3 and 3/4 on the gauge?

Title: Re: mk2 1.3 golf
Post by: Waspy on 14 February 2015, 22:46

Mine tends to come on a little past half way. Still, it rarely comes on, only when I have been sat in heavy traffic.

Title: Re: mk2 1.3 golf
Post by: Sgt_Lemon on 15 February 2015, 14:03

Take the plug of the rad temp sender and bridge the connectors. If it comes on then it's the sensor, if it doesn't then it's the wiring somewhere.

Title: Re: mk2 1.3 golf
Post by: Josh g on 17 February 2015, 22:46

Thanks for the help not had chance to have a look at it yet been to busy with work should be able to get a chance to have a look tomorrow. I have let it get to 3/4 on the temperature gauge before and nothing happened.

Title: Re: mk2 1.3 golf
Post by: ians on 18 February 2015, 09:32

Fuse?

Title: Re: mk2 1.3 golf
Post by: Santiago on 18 February 2015, 18:28

Quote from: Josh g on 17 February 2015, 22:46

Thanks for the help not had chance to have a look at it yet been to busy with work should be able to get a chance to have a look tomorrow. I have let it get to 3/4 on the temperature gauge before and nothing happened.

In that case, I'd say reply #4 is applicable.

There's a two-way power connector on the way to the thermoswitch, a non-waterproof connector. This is what mine looked like when I tried to unplug it to check the connections were clean:

(https://dl.dropboxusercontent.com/u/90027371/20150103_124611.jpg)

That was actually still working, somehow, but it must have been close to losing connectivity for ever.

Title: Re: mk2 1.3 golf
Post by: Benrevs on 04 March 2015, 21:54

A dodgy cap on the reservoir can cause this, as the system won't pressurize properly.  My old car boiled over before the fan came on due to the cap being duff.