Birty Dastards Jeep Club

Please login or register.

Login with username, password and session length
Advanced search  
Pages: [1]   Go Down

Author Topic: Electric fan Question  (Read 6075 times)

0 Members and 2 Guests are viewing this topic.

Anonymous

  • Guest
Electric fan Question
« on: December 23, 2005, 09:39:45 PM »
What temp does the secondary fan kick in on a 4litre XJ?
Logged

Mike Pavelin

  • Guest
(No subject)
« Reply #1 on: December 24, 2005, 07:43:17 AM »
Any temp if the A/C is on or you are on defrost
About 205F if not
Logged

Anonymous

  • Guest
(No subject)
« Reply #2 on: December 24, 2005, 08:48:17 AM »
bugger, will have to get a fan controller then :roll:
Logged

chrisjones

  • Forum Member
  • *
  • Guru: 4
  • Offline Offline
  • Posts: 5841
  • Vehicle: Dogface
  • Sometimes I wonder....
(No subject)
« Reply #3 on: December 24, 2005, 10:25:20 AM »
Or if it's like several i've seen (Includding Barbie) any time it feels like it! :roll:

Barbie's cuts in for about 10 seconds every min or two. Still seems to work on the temp, but otherwise....on....off....on.....off :?
Logged
God was my copilot but we crashed in the mountains and I had to eat him.

Anonymous

  • Guest
(No subject)
« Reply #4 on: December 24, 2005, 10:54:50 AM »
that'll be when you have the screen vent on, it turns on the AC for you, looking as re wiring the fans to work on temp only
Logged

Mike Pavelin

  • Guest
(No subject)
« Reply #5 on: December 24, 2005, 12:33:23 PM »
What's the problem?

I'm asking because the fan is controlled by the engine management  computer, not a seperate controller. There is a fuse and relay in the fuse box under the hood, and the engine controller uses inputs from the temperature sensor neat the thermostat, inputs from the pressure switches in the A/C system and the A/C control panel to determin when it is needed. During normal operation the electric fan seldom comes on unless on A/C or Defrost. If you have A/C on and the fan is cycling on/off every couple of seconds, the A/C is low on refridgerant. The viscous fan is sufficient to keep the engine cool especially in winter. Non A/C 4.0s manage without the electric fan because they don't have the A/C condenor obstructing flow through the radiator.
Logged

Anonymous

  • Guest
(No subject)
« Reply #6 on: December 24, 2005, 02:07:55 PM »
no problem, I just want the ability to switch off the fans when wading so waster doesnt get everywhere and disable the A/C when the heater is in the defrost/screen position.
Logged

Hoodoo

  • Guest
(No subject)
« Reply #7 on: December 24, 2005, 02:23:14 PM »
Steve,  Why does everyone want to be able to switch their fans off in case they start up in water? I've never had this happen. As long as the fans are off when you enter, they're unlikely to start up when the rad is receiving nice, cooling water!
  Mind you, even if they do, my fans are pushers, not pullers!
 Regards,
Logged

Anonymous

  • Guest
(No subject)
« Reply #8 on: December 24, 2005, 02:26:16 PM »
as demonstrated in the great white whale at ribbo viscous fans send lots of water back on the engine, not good for petrols. Plus with electric I may gain an mpg or 2  :D
Logged

Hoodoo

  • Guest
(No subject)
« Reply #9 on: December 24, 2005, 07:46:31 PM »
Then make it a temperature controlled pusher. Avoids the problem (practically certain!!) of forgetting to switch it on at the appropriate moment! I believe Pacet do some good water resistant ones.
 Regards,
Logged

elvis

  • Guest
(No subject)
« Reply #10 on: December 26, 2005, 09:27:48 AM »
are you a sucker then :?:
Logged

Hoodoo

  • Guest
(No subject)
« Reply #11 on: December 26, 2005, 06:35:20 PM »
Nope, a pusher! Nothing quite like a good push!! :lol:
 Regards,
Logged
Pages: [1]   Go Up
« previous next »
 
Powered by EzPortal