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PostPosted: Tue Dec 16, 2008 6:52 pm 
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Location: N.Y
my radiator fan doesnt work,
i check the fuses and all of them are ok, the radiator have water, and the car it is overheating but dont now what to do,
what else can be,,any help will be apreciated.


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kafrances 2008
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PostPosted: Tue Dec 16, 2008 8:31 pm 
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Basic troubleshooting.

Disconnect the fan - connect it directly to the battery - does it spin - if yes, it's good, if no - replace it.

If the fan is good - move to the fan switch - it's the only one in the thermostat housing with two terminals - disconnect the harness and jumper the contacts - turn the ignition on - does the fan spin - if yes, you have a bad switch, if no, you have a problem in the wiring.

Get a test lamp - ground one lead connect the other lead to each of the fan switch leads - with the ignition on the lamp should light on one lead only - if it does the problem is between the switch and the fan, if it doesn't the problem is between the switch and the ignition.

Get the idea?

Please note your car may have a relay between the fan switch and the fan - mine does not.

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PostPosted: Tue Dec 16, 2008 10:40 pm 
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Just for my curiousity - is it overheating at idle ? (stop sign / stop light) or during driving?

Dave

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PostPosted: Wed Dec 17, 2008 8:16 pm 
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thanks fordem i will try troubleshooting , but how can i connect the fan directly to the battery>>??

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PostPosted: Wed Dec 17, 2008 8:18 pm 
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ey jellybeandriver., i just dont drive it becase when i start the engine and i wait like in minutes it is overheating, but dont let get in the red , i just stop the car.

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PostPosted: Wed Dec 17, 2008 9:14 pm 
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KAFRANCES wrote:
thanks fordem i will try troubleshooting , but how can i connect the fan directly to the battery>>??


With a couple of pieces of wire?

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PostPosted: Wed Dec 17, 2008 9:15 pm 
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I think the overheating issue needs addressed first.

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PostPosted: Fri Dec 19, 2008 12:29 am 
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JohnnyMullet wrote:
I think the overheating issue needs addressed first.


Definitely - he should not be overheating after a few minutes.

With my metro I think it'll run for 10's of minutes idling after being started cold before the temp is high enough to turn on the fan.

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1992 Geo metro, 1.0L 5spd, 511,000miles on original engine & trans
- First time engine work at 456K miles, bad headgasket. Rebuilt head, Felpro gasket installed.
- knuckles/hubs/brakes/13" wheels from a 2000 Metro, running 175 70R13
- New bearings and 1st/2nd synchros at 440.5K miles.
- MPGuino
- Averaging ~ 51MPG these days


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PostPosted: Fri Dec 19, 2008 8:13 am 
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Check the fan with wires to the battery as suggested, check the coolant switch for the fan, and check the relay in the main fuse box at the left fender.

Yoy will found one of You problem here.

Good luck,

Dom.

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PostPosted: Sun Dec 21, 2008 8:59 pm 
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i check the fan ,, and it is working ok,, so i will go for the thermo fan switch next.


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fan switch 2.jpg
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PostPosted: Tue Dec 23, 2008 4:38 am 
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If it is overheating after only a few min your thmostat may be stuck closed then the sencer wont get worm enuff to turn the fan on. i would check the thmostat 2.

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PostPosted: Tue Jan 27, 2009 2:51 pm 
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it was the thermo fan switch... thanks.

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PostPosted: Tue Jun 21, 2016 12:06 am 
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I don't imagine any of the elder statesmen of the board would have a picture of just where the Thermostat Fan Switch is located?

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PostPosted: Tue Jun 21, 2016 5:45 am 
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Where the radiator hose goes in to the engine just below the distributor, you'll find the thermostat housing. There should be two sensors screwed into the thermostat housing, one with one wire which runs the gauge, and one with two wires which turns the fan on and off.

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PostPosted: Tue Jun 21, 2016 10:55 pm 
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Woodie wrote:
Where the radiator hose goes in to the engine just below the distributor, you'll find the thermostat housing. There should be two sensors screwed into the thermostat housing, one with one wire which runs the gauge, and one with two wires which turns the fan on and off.


exactly where you said, and it was the switch... thanks ;)

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