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Old 20th June 2019, 11:15   #1
roverbeast75
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Default Fan not working

I have a 2002 cdt & i went to fill the ac gas today, the guy told me my fan doesnt spin when you turn on the ac

I noticed that my engine gets hotter quickly but it always stays stable at the half mark of the temp gauge

Is it a big job? i checked the fuse , it's fine. Could it be the relay? or the motor? Do i need to buy a new fan? ... i hope not

thanks
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Old 20th June 2019, 11:23   #2
john2443
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If you search the forum there's plenty of info about testing fans to work out what's wrong.
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Old 20th June 2019, 12:18   #3
suzublu
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Check this https://www.the75andztclub.co.uk/for...d.php?t=216869
and to monitor correct engine temp, this https://the75andztclub.co.uk/forum/s...ad.php?t=55585
19 then 7 are the critical numbers
How to test the fan https://www.the75andztclub.co.uk/for...ad.php?t=35567

Last edited by suzublu; 20th June 2019 at 12:23..
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Old 20th June 2019, 18:21   #4
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Quote:
Originally Posted by roverbeast75 View Post
I have a 2002 cdt & i went to fill the ac gas today, the guy told me my fan doesnt spin when you turn on the ac

The first thing to do is find out which type is fitted, 3-speed or 2-speed. If it's the original factory fitted fan, it's likely 3-speed. However, many failed fans have been replaced with the later 2-speed. Looke for a resistor behind the fan blades in the 2 o'clock position. If so, it's the later 2-speed version. Once you know the type, it makes the rest more straight forward.

Quote:
I noticed that my engine gets hotter quickly but it always stays stable at the half mark of the temp gauge
Diesels rarely require fan cooling for the engine, which run much cooler than petrol engines. The temperature gauge doesn't really tell you anything useful. The 'normal' mark covers the range from 75C (too cool) to 115C (too hot). The diesel should normally run around the 88C area. The radiator fan would normally trip on at about 100C. This is where the diagnostic mode comes into its own.



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