Fan

Shaker · 14th August 2018, 06:32

Hi all, could you help me with an issue. I've read that the main fan can make a whooping noise that can be cured by the gold resistor mod. However the fan on my 2.5V6 75 is on all the time, I've even disconnected the battery for several minutes and it starts up again as soon as I reconnect the battery. Will the resistor cure this or is the whole fan Kaput?
I have emailed & PM'd Jules but no answer yet so I'm guessing he's on holiday.
Thanks
Steve

MSS · 14th August 2018, 08:14

The "gold resistor mod" is not a mod but merely results in replacing a failed resistor with one that still works as a resistor i.e. is not open circuit. If your fan stays on then I would say the resistor is not your problem but more likely the control box - perhaps a stuck relay?

Someone with knowledge of the V6 fan control box will no doubt provide a more detailed response.

SD1too · 14th August 2018, 08:25

Quote:

Originally Posted by Shaker

Will the resistor cure this or is the whole fan Kaput?

As mss says Steve, the ‘gold’ resistor restores a failed slow speed so forget about that. Try removing fuse 4 in the underbonnet fuse box. Does the fan stop now? If yes, look for wiring loom damage. If no, suspect a faulty relay in the control box.

No, the whole fan is not kaput.

Simon

marinabrian · 14th August 2018, 08:38

Quote:

Originally Posted by SD1too

As mss says Steve, the ‘gold’ resistor restores a failed slow speed so forget about that. Try removing fuse 4 in the underbonnet fuse box. Does the fan stop now? If yes, look for wiring loom damage. If no, suspect a faulty relay in the control box.

No, the whole fan is not kaput.

Simon

Fuse number 4 is for the automatic gearbox Simon, to avoid confusion let the OP know you are referring to the 80A fusible link screwed to the central busbar

Brian

SD1too · 14th August 2018, 08:45

Quote:

Originally Posted by marinabrian

Fuse number 4 is for the automatic gearbox Simon ...

It also supplies the cooling fan relay coils (see Rover 75 Electrical Library RCL0539(2)ENG).

Quote:

... to avoid confusion let the OP know you are referring to the 80A fusible link screwed to the central busbar

To avoid confusion I am not referring to the 80 amp FL4.

Simon

marinabrian · 14th August 2018, 10:23

Quote:

Originally Posted by SD1too

It also supplies the cooling fan relay coils (see Rover 75 Electrical Library RCL0539(2)ENG).

To avoid confusion I am not referring to the 80 amp FL4.

Simon

Ooh a reference to a pirated version of RAVE

Brian

Shaker · 14th August 2018, 11:09

Thanks guys, I'll take a look tonight I thought the whole thing might be dying.

Shaker · 14th August 2018, 11:13

Forgot to say my car is manual.

T-Cut · 14th August 2018, 13:18

Quote:

Originally Posted by Shaker

I've read that the main fan can make a whooping noise

Noises of that type are typically from the aircon system. Does it stop when you turn the aircon off?

TC

Shaker · 14th August 2018, 20:13

Hi checked the fuses and the relay associated with the fan and all is ok, but when i reconnect the battery the fan comes on and stays on - still...doh

Hi T-cut, no this is when everything is off no key in the ignition, I can only stop it by disconnecting the battery, then it starts again when I reconnect the battery - no key in the ignition.

14th August 2018, 06:32	#1
Shaker Avid contributor ZT 260 SE, ZT-T 135+, ZT 160+1.8T, ZS180, ZR115+, 07 2.5 Connie SE Join Date: Jun 2008 Location: Macclesfield Posts: 183 Thanks: 27 Thanked 7 Times in 7 Posts	Fan Hi all, could you help me with an issue. I've read that the main fan can make a whooping noise that can be cured by the gold resistor mod. However the fan on my 2.5V6 75 is on all the time, I've even disconnected the battery for several minutes and it starts up again as soon as I reconnect the battery. Will the resistor cure this or is the whole fan Kaput? I have emailed & PM'd Jules but no answer yet so I'm guessing he's on holiday. Thanks Steve __________________ V8.... Everything else is just a toy!!!

14th August 2018, 11:09	#7
Shaker Avid contributor ZT 260 SE, ZT-T 135+, ZT 160+1.8T, ZS180, ZR115+, 07 2.5 Connie SE Join Date: Jun 2008 Location: Macclesfield Posts: 183 Thanks: 27 Thanked 7 Times in 7 Posts	Thanks guys, I'll take a look tonight I thought the whole thing might be dying. __________________ V8.... Everything else is just a toy!!!

14th August 2018, 11:13	#8
Shaker Avid contributor ZT 260 SE, ZT-T 135+, ZT 160+1.8T, ZS180, ZR115+, 07 2.5 Connie SE Join Date: Jun 2008 Location: Macclesfield Posts: 183 Thanks: 27 Thanked 7 Times in 7 Posts	Forgot to say my car is manual. __________________ V8.... Everything else is just a toy!!!

14th August 2018, 20:13	#10
Shaker Avid contributor ZT 260 SE, ZT-T 135+, ZT 160+1.8T, ZS180, ZR115+, 07 2.5 Connie SE Join Date: Jun 2008 Location: Macclesfield Posts: 183 Thanks: 27 Thanked 7 Times in 7 Posts	Hi checked the fuses and the relay associated with the fan and all is ok, but when i reconnect the battery the fan comes on and stays on - still...doh Hi T-cut, no this is when everything is off no key in the ignition, I can only stop it by disconnecting the battery, then it starts again when I reconnect the battery - no key in the ignition. __________________ V8.... Everything else is just a toy!!!

14th August 2018, 08:14	#2
MSS This is my second home Rover 75CDT, Jaguar XF-S 3.0V6, V'xhall Omega V6 Estate, Twintop 1.8VVT, Astra Estate and Corsa 1.2 Join Date: Dec 2007 Location: Suffolk Posts: 7,085 Thanks: 283 Thanked 624 Times in 440 Posts	The "gold resistor mod" is not a mod but merely results in replacing a failed resistor with one that still works as a resistor i.e. is not open circuit. If your fan stays on then I would say the resistor is not your problem but more likely the control box - perhaps a stuck relay? Someone with knowledge of the V6 fan control box will no doubt provide a more detailed response.