Quick question

marsdalebear · Dec 13th, 2019, 19:45

Im sure its nothing serious but twice my wife has mentioned that when she parked the car the fan kept running. Today she parked outside the house and the fan was running like a WW2 Merlin. I started the car and the fan stopped.
Is this normal with temperature being so low right now?
XC60 MY17 16 Plate

Zebster · Dec 13th, 2019, 20:04

Quote:

Originally Posted by marsdalebear

Im sure its nothing serious but twice my wife has mentioned that when she parked the car the fan kept running. Today she parked outside the house and the fan was running like a WW2 Merlin. I started the car and the fan stopped.
Is this normal with temperature being so low right now?
XC60 MY17 16 Plate

DPF active regen in progress when she parked up? If it was interrupted then it'd possibly resume the next time the car went out.

Spike56 · Dec 14th, 2019, 00:10

Also, simply being cold outside the engine still runs very hot! Turn your heating on full temperature and see just how hot it can get!!

marsdalebear · Dec 14th, 2019, 08:30

Quote:

Originally Posted by Zebster

DPF active regen in progress when she parked up? If it was interrupted then it'd possibly resume the next time the car went out.

That was my first thought, makes sense.

marsdalebear · Dec 14th, 2019, 08:31

Quote:

Originally Posted by Spike56

Also, simply being cold outside the engine still runs very hot! Turn your heating on full temperature and see just how hot it can get!!

Temp gauge on normal so I think that the regen is the reason.

Dash300 · Dec 14th, 2019, 08:50

This post has jogged a question often on my mind. On several occasions returning home for example the regen fans are roaring away as I leave it parked up. Would it be better to continue to drive the car until the process had concluded to ensure it's had a proper clean out/regen?

100K+ · Dec 14th, 2019, 09:03

I dropped in here today to, as I'm considering an XC60. Have to say what the OP describes sounds no more than the cooling fans on the radiators running on after the engine is cut. A 30/70 event after shutoff ( on V70's Petrol or diesel - we run both) and not anything to be concerned about. On my D5 they occasionally run on for 2-3 minutes no more. Its never caused an issue in 25+ years.

I'm curious about the concept of "fans running while regen" - never heard about that.
Cheers
Bob

Clan · Dec 14th, 2019, 11:57

Quote:

Originally Posted by 100K+

I dropped in here today to, as I'm considering an XC60. Have to say what the OP describes sounds no more than the cooling fans on the radiators running on after the engine is cut. A 30/70 event after shutoff ( on V70's Petrol or diesel - we run both) and not anything to be concerned about. On my D5 they occasionally run on for 2-3 minutes no more. Its never caused an issue in 25+ years.

I'm curious about the concept of "fans running while regen" - never heard about that.
Cheers
Bob

The ECU knows the underbonnet temperature and for what ever reason if it goes above a certain value it will run the radiator fans , When regenerating , the exhaust system will get up to 600 C so turning off half way through will leave a lot of heat under the bonnet . No harm though , the regeneration will carry on until finished next time you do a suitable journey ..

BorderVolvo · Dec 14th, 2019, 12:27

Engine idle speed could well be higher than normal if it's "mid re-gen"?

Spike56 · Dec 14th, 2019, 16:01

May also be the aircon recycling/evaporation cycle. The a/c is likely to run on sometime after the system shuts down. It does explain in the owners manual (which I can't find!!!)

Dec 13th, 2019, 19:45	#1
marsdalebear I've Been Banned Last Online: Dec 30th, 2021 14:21 Join Date: Jul 2019 Location: Between Skegvegas and Boston	Quick question Im sure its nothing serious but twice my wife has mentioned that when she parked the car the fan kept running. Today she parked outside the house and the fan was running like a WW2 Merlin. I started the car and the fan stopped. Is this normal with temperature being so low right now? XC60 MY17 16 Plate

Dec 14th, 2019, 08:50	#6
Dash300 High Grand Master Member Last Online: Oct 27th, 2021 23:16 Join Date: Aug 2014 Location: British South Somerset	This post has jogged a question often on my mind. On several occasions returning home for example the regen fans are roaring away as I leave it parked up. Would it be better to continue to drive the car until the process had concluded to ensure it's had a proper clean out/regen? __________________ XC60 VEA 181 2015MY SE Lux Nav Geartronic 8 speed Auto. 1962 LR S11a, 1970 Mk2 Vitesse Convertible. Maybe the Hokey Cokey is what it's all about!

Dec 14th, 2019, 12:27	#9
BorderVolvo Member Last Online: Yesterday 18:57 Join Date: Oct 2018 Location: North of Jedburgh	Engine idle speed could well be higher than normal if it's "mid re-gen"? __________________ V70 2.4 Phase 1.....2435cc.....Registered 31/3/2000.....Leather,AC,CC,etc!.....182k

Dec 14th, 2019, 00:10	#3
Spike56 Master Member Last Online: Today 22:49 Join Date: Feb 2013 Location: Orpington	Also, simply being cold outside the engine still runs very hot! Turn your heating on full temperature and see just how hot it can get!!

Dec 14th, 2019, 09:03	#7
100K+ Premier Member Last Online: Today 16:40 Join Date: Aug 2008 Location: Newcastle	I dropped in here today to, as I'm considering an XC60. Have to say what the OP describes sounds no more than the cooling fans on the radiators running on after the engine is cut. A 30/70 event after shutoff ( on V70's Petrol or diesel - we run both) and not anything to be concerned about. On my D5 they occasionally run on for 2-3 minutes no more. Its never caused an issue in 25+ years. I'm curious about the concept of "fans running while regen" - never heard about that. Cheers Bob

Dec 14th, 2019, 16:01	#10
Spike56 Master Member Last Online: Today 22:49 Join Date: Feb 2013 Location: Orpington	May also be the aircon recycling/evaporation cycle. The a/c is likely to run on sometime after the system shuts down. It does explain in the owners manual (which I can't find!!!)

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