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Do thermo fans run after ignition off? 

 

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 Post subject: Do thermo fans run after ignition off?
Posted: Sun Sep 25, 2005 8:02 pm 
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Which is the positive power wire for the thermo fans on my EF I6?
Actually better check first, do the thermo fans still run on it after the ignition is turned off?
Reason for asking is my new alarm sensors battery voltage drop, and needs to be hooked to the thermo fan positive power so it know when it's the thermo fans causing the voltage drop and when it's something else.

 

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Last edited by twr7cx on Mon Sep 26, 2005 1:40 am, edited 1 time in total.

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Posted: Sun Sep 25, 2005 8:33 pm 
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got a multi meter, check wires.
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Posted: Sun Sep 25, 2005 9:26 pm 
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RED WIRE
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Posted: Sun Sep 25, 2005 9:30 pm 
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fordgt290 wrote:
got a multi meter, check wires.


that takes effort. also not much use since the cars not running at the momemnt, so i can't exactly run it to get hot enough hey?

and you sure about the red wire? that'd be very rare, ford usually use a wide range of colours wiht different coloured spots and stripes and crap on them for positive wires, not just red...

 

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 Post subject: Re: Thermo Fan Positive Wire?
Posted: Sun Sep 25, 2005 9:40 pm 
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twr7cx wrote:
Which is the positive power wire for the thermo fans on my EF I6?
Actually better check first, do the thermo fans still run on it after the ignition is turned off?
Reason for asking is my new alarm sensors battery voltage drop, and needs to be hooked to the thermo fan positive power so it know when it's the thermo fans causing the voltage drop and when it's something else.


there is one plug with 2 wires and one with three.

the one with 2 wires has black and red. pretty simple that one

the plug with 3 wires has black red and white. red and white are both power

 

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Posted: Sun Sep 25, 2005 9:42 pm 
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well its proberly for the fan resistor maybe. id say the ecu doesnt send down a straight voltage but rather a frequencey voltage to regulate the fan speed. maybe not but alot of cars do it that way.
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Posted: Mon Sep 26, 2005 1:39 am 
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So does anyone know if the thermo fans actually run for a while after the car switchs off? Or do they shut off with the ignition?

 

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Posted: Mon Sep 26, 2005 1:53 am 
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twr7cx wrote:
So does anyone know if the thermo fans actually run for a while after the car switchs off? Or do they shut off with the ignition?


id say they would coz thermos kick in at a specified temp and if you cain the s**t out the car and turn it off the coolent temp will still be relativly hot causing the fans too come on

 

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Posted: Mon Sep 26, 2005 1:56 am 
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im pretty sure they turn off, some later model cars may do, ive never heard my thermos continuing to run
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Posted: Mon Sep 26, 2005 10:36 am 
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twr7cx wrote:
So does anyone know if the thermo fans actually run for a while after the car switchs off? Or do they shut off with the ignition?


They shut off with ignition.

 

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Posted: Tue Sep 27, 2005 10:20 pm 
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Old bluebirds and other jap cars had electric fans that ran on after shut down.
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Posted: Wed Sep 28, 2005 2:04 am 
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Yeah a mate of mine has a VW and it runs when ever it needs

 

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Posted: Wed Sep 28, 2005 7:01 am 
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They shut down with ignition, mine have never run when the engine is off, even though there has been times it has definatley been hot enough for them too..

 

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Posted: Mon Oct 03, 2005 9:12 pm 
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mine have kept running after long distance driving. car switched off, key out and doors locked, the fan will keep going until the engine has dropped temp. same with my oldies commodore, it does the same thing after a highway run.
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Posted: Tue Oct 04, 2005 11:52 am 
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Ive got EL twin thermos on my clevo and they only run with the ignition on.

 

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