Fan problems

simonjw · 27th February 2017, 21:57

Hi,
I'm new to the forum and have a rover 75 diesel Classic. I am in North London.
I have seen various other posts about fans continuing on high setting a long time after switching off the engine and draining the battery.
This is my situation as well. A mechanic confirmed my own diagnosis (for a price) - the fan control box is faulty. I can only find one sold with a new fan motor. The supplier wants over £400.
Does anyone have knowledge of other options? relatively local places that might be less pricey or somewhere that will supply just the control box without the motor (unless there's a really good reason they must come together)? Or even somewhere they know how to actually fix the thing?
Presently I'm driving it around with the fan's fuse pulled out. But only short distances.
Thanks in anticipation.

Sector-9 · 27th February 2017, 22:15

Provided the fins on your radiator aren't rotted off and you're not towing/driving slowly up steep hills or using air con (if fitted as Classics sometimes didn't), you'll probably find you don't need the fan anyway as the diesel in normal use doesn't generate that much heat. That's not saying don't fix it (you'll get one from a scrapyard cheaply), but you can still drive around without one at this time of year. And no, the control boxes aren't coded to the fan or anything silly so can be swapped independently though make sure you get one from the same type of fan (later ones had a large metal resistor fixed to the plastic fan shroud, early ones didn't) and from a diesel as the petrol ones won't work for you. You can also check if any of the relays in your own are stuck 'on' with a multimeter.

simonjw · 27th February 2017, 22:29

Thanks Sector-9. I will check scrapyards.

FrenchMike · 28th February 2017, 08:03

Quote:

Originally Posted by simonjw

Thanks Sector-9. I will check scrapyards.

Hi Simon,i can repair (if faulty) your fan PCB

Mike

cengar · 28th February 2017, 13:41

I can confirm what french mike says He did mine

27th February 2017, 21:57	#1
simonjw Newbie silver rover 75 diesel 2 litre Join Date: Feb 2017 Location: london Posts: 2 Thanks: 0 Thanked 0 Times in 0 Posts	Fan problems Hi, I'm new to the forum and have a rover 75 diesel Classic. I am in North London. I have seen various other posts about fans continuing on high setting a long time after switching off the engine and draining the battery. This is my situation as well. A mechanic confirmed my own diagnosis (for a price) - the fan control box is faulty. I can only find one sold with a new fan motor. The supplier wants over £400. Does anyone have knowledge of other options? relatively local places that might be less pricey or somewhere that will supply just the control box without the motor (unless there's a really good reason they must come together)? Or even somewhere they know how to actually fix the thing? Presently I'm driving it around with the fan's fuse pulled out. But only short distances. Thanks in anticipation.

27th February 2017, 22:15	#2
Sector-9 Gets stuck in Rover 75 CDT manual Tourer Join Date: Aug 2014 Location: nr. Mansfield Posts: 767 Thanks: 24 Thanked 182 Times in 137 Posts	Provided the fins on your radiator aren't rotted off and you're not towing/driving slowly up steep hills or using air con (if fitted as Classics sometimes didn't), you'll probably find you don't need the fan anyway as the diesel in normal use doesn't generate that much heat. That's not saying don't fix it (you'll get one from a scrapyard cheaply), but you can still drive around without one at this time of year. And no, the control boxes aren't coded to the fan or anything silly so can be swapped independently though make sure you get one from the same type of fan (later ones had a large metal resistor fixed to the plastic fan shroud, early ones didn't) and from a diesel as the petrol ones won't work for you. You can also check if any of the relays in your own are stuck 'on' with a multimeter. __________________ Free fault codes scan/clear (TOAF) - M1 J27 area

27th February 2017, 22:29	#3
simonjw Newbie silver rover 75 diesel 2 litre Join Date: Feb 2017 Location: london Posts: 2 Thanks: 0 Thanked 0 Times in 0 Posts	Thanks Sector-9. I will check scrapyards.

28th February 2017, 13:41	#5
cengar Loves to post rover 75 saloon cdti Join Date: Mar 2010 Location: Trelights Posts: 351 Thanks: 158 Thanked 168 Times in 123 Posts	I can confirm what french mike says He did mine