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Overheating
Posted: 13 Sep 2017, 16:37
by alank950
My van was overheating and i did not hear the radiator fan comming on which tells me it could be the fan sensor switch.I am having trouble finding one of these although i think i located one on ebay from Latvia..does anyone know of any uk dealers who stock these...van is 1985 1.9D
Re: Overheating
Posted: 13 Sep 2017, 16:51
by crazyhorse
https://www.brickwerks.co.uk/t3-parts/e ... ch-t3.html" onclick="window.open(this.href);return false;
Easy to change, even I can do it.
Have a look at this page also
https://club8090.co.uk/wiki/Co ... diator_fan" onclick="window.open(this.href);return false;
Re: Overheating
Posted: 13 Sep 2017, 16:54
by alank950
Thanks...i havent had a chance yet to have a look but from what i have read the sensor is located at the top of the radiator (although the link you posted suggests it at the bottom right) this was a design flaw in VW design of these ..i will know more when i have a look at the radiator over the weekend..thanks for the links
Re: Overheating
Posted: 13 Sep 2017, 17:05
by Oldiebut goodie
Bottom right - this is the hottest zone on our radiators.
Re: Overheating
Posted: 13 Sep 2017, 17:32
by scunnerd25
I just got mine delivered from Brickwerks today

Re: Overheating
Posted: 14 Sep 2017, 09:53
by alank950
Ok i tested the sensor connector and the fan did come on so its the sensor thats faulty.I did notice though that the fan is only comming on at one speed when i jump the connector weather its full speed or half i dont know...any ideas why this might be?.I will check the wiring on Sat when i have more time ,i am thinking if the fans working it should be working on the two speeds..
Re: Overheating
Posted: 14 Sep 2017, 10:13
by crazyhorse
alank950 wrote:Ok i tested the sensor connector and the fan did come on so its the sensor thats faulty.I did notice though that the fan is only comming on at one speed when i jump the connector weather its full speed or half i dont know...any ideas why this might be?.I will check the wiring on Sat when i have more time ,i am thinking if the fans working it should be working on the two speeds..
OK,
When I did this, only had one speed, what i did was remove all the earth crowns from above the glove box, gave them a clean, put them back on and tested again.. worked. Thats what I would do first, then dig deeper if this doesnt work.
Just to to add, if the fan is not noisy and a gentle spin it will be the low speed, if its pretty darn loud then its the high speed one
Re: Overheating
Posted: 14 Sep 2017, 10:24
by alank950
Earth Crowns?...i assume these will be green wires with connectors
Re: Overheating
Posted: 14 Sep 2017, 11:16
by crazyhorse
The earth crowns are on the passenger front behind the fuse box, and the left attaching to the bodywork. In the footwell area
Its a a small circle should be 2 of them shaped like crowns. The have variousconnections going to them providing earth to all your electrical conncetions. Should be about 5-6 on each one.
If there is a leak in the windsceen, water runs down and sometimes rusts the connections. Mine were ok once i pulled them out 1 by one and checked them over
index by
Crazy Horse, on Flickr
Re: Overheating
Posted: 14 Sep 2017, 11:39
by Oldiebut goodie
alank950 wrote:Earth Crowns?...i assume these will be green wires with connectors
Don't assume green is earth, brown is. Also black isn't neutral/return/earth it is usually live/positive on German items.
Re: Overheating
Posted: 14 Sep 2017, 11:47
by alank950
I just watched a video of a guy who replaced the earth crowns with what he called a bus bar or earth bar
Re: Overheating
Posted: 14 Sep 2017, 11:49
by alank950
There are two types available 100amp and 150 amp..migh be worth while if the crowns are corroded