Speed controlled cooling fans
-
- Over 2k
- Posts: 6417
- Joined: Sun Jul 03, 2005 9:36 pm
- Location: Fareham, Hants
- My Cars: Too many to list
- x 88
- Contact:
Speed controlled cooling fans
Clever one,this. My cooling fans cut in when I start going fast(ish)! My coolant level is fine, it\'s not overheating and to my knowledge they cut in when they should. But if I start doing 80mph - 100mph, I can hear them cutting in occasionally, but only when I\'m travelling at that sort of speed I did try going upto about 125mph to see if they stopped or got worse, but my ears couldn\'t take the battering!
Really weird. It\'s a standard fan with a relay controlled second fan setup. Can\'t tell if it\'s both of them cutting in or just one or the other (but the second one can\'t work without the first obviously).
Maybe the wind blows the wires to the switch and shorts them out?
Really weird. It\'s a standard fan with a relay controlled second fan setup. Can\'t tell if it\'s both of them cutting in or just one or the other (but the second one can\'t work without the first obviously).
Maybe the wind blows the wires to the switch and shorts them out?
One third of a three-spoke BX columnist team for the Citroenian magazine.
CCC BX registrar: The national BX register - click to submit a car!
1983(A) 16TRS (Rouge Valleunga)
1990(H) 16Valve (Rouge Furio)
CCC BX registrar: The national BX register - click to submit a car!
1983(A) 16TRS (Rouge Valleunga)
1990(H) 16Valve (Rouge Furio)
-
- Over 2k
- Posts: 6417
- Joined: Sun Jul 03, 2005 9:36 pm
- Location: Fareham, Hants
- My Cars: Too many to list
- x 88
- Contact:
It\'s a new rad though and the coolant isn\'t gunky, it\'s clean as a whistle! Unless it\'s popped it\'s head gasket or the seal in the heat exhcnagers gone and it\'s accumulating shit down by the sensor? Shouldn\'t be, I only put the engine back together 2 years ago!
One third of a three-spoke BX columnist team for the Citroenian magazine.
CCC BX registrar: The national BX register - click to submit a car!
1983(A) 16TRS (Rouge Valleunga)
1990(H) 16Valve (Rouge Furio)
CCC BX registrar: The national BX register - click to submit a car!
1983(A) 16TRS (Rouge Valleunga)
1990(H) 16Valve (Rouge Furio)
- electrokid
- 1K Away
- Posts: 1764
- Joined: Fri May 09, 2008 2:14 pm
- Location: Woking
-
- Over 2k
- Posts: 6417
- Joined: Sun Jul 03, 2005 9:36 pm
- Location: Fareham, Hants
- My Cars: Too many to list
- x 88
- Contact:
Yeah definately sure they\'re coming on. The original N/S fan (the two speed one) is quiet, but I\'ve hooked up a relay which is triggered by the original fan coming on and kicks the second one into life about half a second after the first one. Thing is I used a fairly heavy duty relay and fairly heavy duty wiring, so to say it spins quickly is a bit of an understatement - it\'s bastard loud. In fact I swear if it comes on at the lights I start moving backwards!
I\'ve found at around 60mph it doesn\'t come on, but sitting at a prolonged 70-80mph, it does. Winding it past three figure speeds doesn\'t change a thing, which makes me think it must be wind related
I\'ve found at around 60mph it doesn\'t come on, but sitting at a prolonged 70-80mph, it does. Winding it past three figure speeds doesn\'t change a thing, which makes me think it must be wind related
One third of a three-spoke BX columnist team for the Citroenian magazine.
CCC BX registrar: The national BX register - click to submit a car!
1983(A) 16TRS (Rouge Valleunga)
1990(H) 16Valve (Rouge Furio)
CCC BX registrar: The national BX register - click to submit a car!
1983(A) 16TRS (Rouge Valleunga)
1990(H) 16Valve (Rouge Furio)
Have you tried disconnecting the fans and taking it for a spin down the motorway? After all if you keep moving then you shouldn't need the fans. If you then hear the noise then it could indeed be wind causing them to turn as the BX fans don't "feather" when they're off, do they?Kitch wrote: I've found at around 60mph it doesn't come on, but sitting at a prolonged 70-80mph, it does. Winding it past three figure speeds doesn't change a thing, which makes me think it must be wind related
Also if you see your temperature gauge rising above normal after 60mph then you'll also know there is an efficiency problem with the radiator for whatever reason.
1991 BX19GTi Auto
-
- Over 2k
- Posts: 6417
- Joined: Sun Jul 03, 2005 9:36 pm
- Location: Fareham, Hants
- My Cars: Too many to list
- x 88
- Contact:
Sorry I didn\'t make it clear enough; I don\'t think the noise is the wind spinning my fans. I think the wind might be pushing some wires together (or something equally as straw clutching) and shorting them out. And that really is a long shot!
Haven\'t so much as opened the bonnet yet, I just keep driving it! The coolant temp gauge never reads above 80 degrees unless I hit traffic and the coolant level warning lamp does work. I might just put it down to a character quirk of the car until something fails terminally (and I blame the car/smash it up/burn it/etc), and then I\'ll be able to see what it was
Haven\'t so much as opened the bonnet yet, I just keep driving it! The coolant temp gauge never reads above 80 degrees unless I hit traffic and the coolant level warning lamp does work. I might just put it down to a character quirk of the car until something fails terminally (and I blame the car/smash it up/burn it/etc), and then I\'ll be able to see what it was
One third of a three-spoke BX columnist team for the Citroenian magazine.
CCC BX registrar: The national BX register - click to submit a car!
1983(A) 16TRS (Rouge Valleunga)
1990(H) 16Valve (Rouge Furio)
CCC BX registrar: The national BX register - click to submit a car!
1983(A) 16TRS (Rouge Valleunga)
1990(H) 16Valve (Rouge Furio)
- electrokid
- 1K Away
- Posts: 1764
- Joined: Fri May 09, 2008 2:14 pm
- Location: Woking
-
- Over 2k
- Posts: 5917
- Joined: Wed Dec 16, 2009 8:02 pm
- Location: Harwood, Bolton
- My Cars: Land Rover Discovery Series 1 200tdi 3 door
Land Rover Discovery Series 2 Facelift TD5
2020 Fiat Panda cross 4x4 twin air. - x 27
-
- Over 2k
- Posts: 6417
- Joined: Sun Jul 03, 2005 9:36 pm
- Location: Fareham, Hants
- My Cars: Too many to list
- x 88
- Contact:
Yes I wasn\'t being completely serious there!electrokid wrote:If the fan is pushing air out at the front then that\'s your problemIn fact I swear if it comes on at the lights I start moving backwards!
One third of a three-spoke BX columnist team for the Citroenian magazine.
CCC BX registrar: The national BX register - click to submit a car!
1983(A) 16TRS (Rouge Valleunga)
1990(H) 16Valve (Rouge Furio)
CCC BX registrar: The national BX register - click to submit a car!
1983(A) 16TRS (Rouge Valleunga)
1990(H) 16Valve (Rouge Furio)