Should the cooling fan run after engine switched off
I recently replaced the AC compressor and the dryer had the pipes vacuumed to remove any moisture the the lot pressure tested and the re gassed, I’ve just drove back from N wales steady 6o mph with a small trailer on the back and i set the ac to full cold on the front and the back it was cool not cold, I’ve sat here and the fan kicks in but the duty cycle doesn’t go up not sure if that’s ok or not but to be honest I’ve never took any notice apart from when you start first thing it sounds like a jet engine whist the fan is fully engaged here is a screen shot does the pressure look ok does anything stand out
Range Rover Westminster 4.4 TDV8 what a car
Discovery 3 HSE 2006 gone but never forgotten
Member of the 234,567 mile club😎
31st Jul 2020 3:26 pm
Admirable
Member Since: 19 Jul 2015
Location: Fife
Posts: 1011
If it's 35.5 deg outside the fan will be trying to cool the engine down even if engine is not running.
That’s the thing my wife’s and sons cars one Audi one vw both fans run on after the car is stopped I’ve had this car for five years and the fan has never run after the car is switched off, if sat the fan kicks in to cool things down when engine running but never when offRange Rover Westminster 4.4 TDV8 what a car
Discovery 3 HSE 2006 gone but never forgotten
Member of the 234,567 mile club😎
31st Jul 2020 4:29 pm
aja4x4
Member Since: 14 Apr 2019
Location: Westbury
Posts: 2459
The fan will not run after the engine has stopped on a Discovery as its engine driven not electric
31st Jul 2020 6:03 pm
DSL Keeper of the wheelie bin
Member Since: 11 May 2006
Location: Off again! :-)
Posts: 72787
Not sure if I can remember the fan running on after shutting down, but my last D3 experiences were a long time ago in a galaxy far, far away, well 3 years ago in NW Norway. And believe me, she would get pretty hot off-roading in high temps, like up in the high 30s/low 40s.
31st Jul 2020 6:12 pm
Pete K
Member Since: 15 Jan 2016
Location: GL
Posts: 10364
Exactly!
The fans on these are engine driven as it is better for an off-roader.
If the engine isn’t running. The fan can’t run.
31st Jul 2020 6:46 pm
DSL Keeper of the wheelie bin
Member Since: 11 May 2006
Location: Off again! :-)
Posts: 72787
Isn’t there an additional electric powered rooster-booster fan?
31st Jul 2020 6:51 pm
Pete K
Member Since: 15 Jan 2016
Location: GL
Posts: 10364
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