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#1
01-09-2004, 08:08 AM
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Temperature Sensor...Where, What?
I had a diagnostic test done yesterday and one of the things they told me I needed was the temperature sensor that controls my "fan", as the fan behind the rad is running constantly. Problem is I don't have a freakin' clue where that is? Is that actually what it is called...just the temperature sensor or is there another name for it?
Thanks for the help...  Jason 
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#2
01-09-2004, 09:46 AM
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Re: Temperature Sensor...Where, What?
There are two of them. One is behind the upper radiator hose and one is on the back of the block. I think the one near the hose is the fan control. I dunno what the one in back does. I took that bitch out of my '78 Civic and put an aftermarket gauge and my fan and shit still worked
__________________
-Shawn '91 Civic DX sedan DOHC ZC, I,H,E, urethane bushings and mount inserts, rock chipped hood, some rust, stock steelies, nice comfy Integra seats, and the A/C works! What else could you want from an 18 year old car with 241,000 miles? Working on getting the Si tranny in now 
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#4
01-09-2004, 10:30 AM
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Re: Re: Temperature Sensor...Where, What?
Quote:
Jason
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#5
01-09-2004, 10:30 AM
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the sensor on the back of the block with the two female banana plug connector is the temperature activated fan switch which controls your cooling fans. (On 92+ engines, this is located on the thermostat housing)
the temperature sending unit is located on the passenger's side of the head
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#6
01-09-2004, 10:53 AM
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Re: Temperature Sensor...Where, What?
Quote:
So do I need the "switch" or do I need the "sending unit"...because one is $50 the other is $20...??? They told me I needed this because my fan 'never' shuts off...even when I am turning the key to start the car, after the first click the headlights and the fan start up and then the engine...the fan never stops... The engine is a 90' d15b1 Jason
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#7
01-09-2004, 11:17 AM
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it sounds like maybe your fan switch is fried. How it works is it connects the circuit to turn on the fan when it reaches a certain temp.
How you wire up the fans direct is to unplug the plugs and jumper them together, so if the fan is staying on the whole time, its either wired up direct or your switch is shorted out or something, although i've never herad of this happening. usually the fans will never turn on..
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#8
01-09-2004, 11:18 AM
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it sounds like maybe your fan switch is fried. How it works is it connects the circuit to turn on the fan when it reaches a certain temp.
How you wire up the fans direct is to unplug the plugs and jumper them together, so if the fan is staying on the whole time, its either wired up direct or your switch is shorted out or something, although i've never herad of this happening. usually the fans will never turn on.. btw it doesnt hurt the engine to have the fans running all the time, the car will just not warm up as quick and you always have the constant drag of the fan on your alternator
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#9
01-09-2004, 11:32 AM
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Ok...one last question (i think)...would the sensor on a d15b2 and a d15b1 be the same? because I have a b1 in the car right now...and I just took out the b2...if I could just use the one that was in there before the swap and save the $50 for now that would be great...also, why would someone wire the fan direct?
Jason
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