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  #1  
Old 08-07-2018, 10:04 AM
tofufi tofufi is offline
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Location: Bristol, UK
Vehicle: 740 turbodiesel
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Default Electric fan conversion

Hi folks,

I've fitted an electric fan to my D24T(IC)

It's a standard Volvo 940 (large) one, which fits on the radiator, and uses a 2 speed relay.

To trigger it, I bought a kit from eBay which puts a switch into the radiator hose.

I put this in the top hose - am I right in thinking this is the inlet to the engine from the radiator? The hose from the thermostat on the engine is unchanged.



I also temporarily put a light in the dashboard to tell me when the radiator fan is running.

The switch triggers at two temperatures, the first of which is meant to be 88-83, the second temperature being 92-87.

So far as I know, I'm running a standard thermostat.

So, when driving on the motorway at 70mph, the electric fan is always on, and at the second speed. Temperatures today were at least 25 deg C (77f) outside.

The temperature gauge is steady and shows straight upwards. So I don't think it's overheating - I've done 20k miles in the car in the time I've owned it and it's never showed signs of overheating.

Has anyone else experience of this, and suggestions for a better switch location or suitable triggering temperatures?

This is a handy list of different switches I can readily get: http://www.x-eng.co.uk/X-ThermData.asp

Cheers,
Jim.

Last edited by tofufi; 08-07-2018 at 10:08 AM.
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  #2  
Old 08-07-2018, 10:39 AM
ngoma ngoma is offline
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Quote:
Originally Posted by tofufi View Post
I put this in the top hose - am I right in thinking this is the inlet to the engine from the radiator?
The upper hose carries the hot coolant from the engine to the radiator.
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  #3  
Old 08-07-2018, 10:58 AM
tofufi tofufi is offline
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Quote:
Originally Posted by ngoma View Post
The upper hose carries the hot coolant from the engine to the radiator.
That'd be it then I'll try inserting it into the lower hose instead...

Thanks
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  #4  
Old 08-07-2018, 12:47 PM
RedArrow RedArrow is offline
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Vehicle: 1986 Volvo 745 TD
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Having the "generator" up there is so much smarter than what we got on our cars here in the usa.
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  #5  
Old 08-07-2018, 10:32 PM
tofufi tofufi is offline
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Location: Bristol, UK
Vehicle: 740 turbodiesel
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Where did they put the alternator/generator on the US cars?

Below the alternator is the power steering pump, and below that the A/C... not sure there's room anywhere else!
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  #6  
Old 08-08-2018, 01:24 AM
RedArrow RedArrow is offline
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Location: New York
Vehicle: 1986 Volvo 745 TD
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Default Alternator is on the passenger side here in the US

And it is closer to the ground (&water)

http://vwdiesel.net/forum/index.php/topic,27359.0.html
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Last edited by RedArrow; 08-08-2018 at 01:30 AM.
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