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5th May 2010, 18:06 | #1 |
Gets stuck in
Rover 75 Saloon Join Date: Jan 2010
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Mk1 V6 Cooling Fan
On my wife's Nov 2000 2.0 V6 manual Classic SE saloon if the engine is idling with the cooling fan off and I switch on the aircon the cooling fan switches on. I know it is supposed to come on at speed 1 of 3. I have nothing to compare it to but it seems to be quite fast for speed 1. If the slow speed motor brush is worn away does the system sense this and use a higher speed that still has some brush left?
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5th May 2010, 18:45 | #2 |
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180+ Sport Auto Join Date: Oct 2006
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As above, second speed is pretty loud. Fast speed only comes on in overheat situations and is really dramatic.
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5th May 2010, 19:13 | #3 |
This is my second home
Rover75 and Mreg Corsa. Join Date: Nov 2006
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The slow speed fan should start within a few seconds of switching aircon into Auto. If the slow speed has failed, it will be rather longer before the emergency higher speed fan trips in. This will cycle on-off-on-off every 15-30 seconds as the pressure rises and falls in a repeating cycle.
Intriguingly, there's a well respected member of another forum who insists this is the correct operation for the later 2-speed fans. He insists the 30 second cycling at the higher speed is how it's designed to operate in normal use. It seems nothing I say will alter that view, so I'm actually starting to doubt my understanding (and everyone else's) of the aircon fan system. TC Last edited by T-Cut; 5th May 2010 at 19:15.. |
5th May 2010, 19:17 | #4 | |
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