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Discussion Starter · #1 ·
since I haven't been able to find a coolant temp sensor and wire connector for my GTX yet, I decided to wire up my radiator fan so it turns on with the ignition.

since I have absolutely no clue how hot my car is running, I figure this will be good for a little extra insurance to make sure I don't get too hot. I obviously plan on replacing my coolant temp sensor and such as soon as I can find one in a junk yard, but for the time being, this is the solution I have.


however, it is an electric fan and I'm sure it has a life span. anyone ever do this? how long did it last?

thanks :)
 

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YEP I had to cause something was wrong with my temp sensor and I didnt feel like spending $80 to get a new one instead I went to radio shack and got some 12 gauge wire and a simple toggle switch. BUT I honestly forget how to wire it up since my car has been in my shop since OCT!! so I can tell yea tomorrow night if someone hasnt already!
 

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theres a few ways you could do it. first is get a wire and atach it to the hot side of the battery with a switch and splice it into the fan. the second is to get a realay, hook the relay switch to the "run"position on your ign switch, then do the same by splicint the fan hot wire thru the relay then to the battery. quite simple. just make sure you use a relay that can handle 30-40 amps.
 

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in other words supra it's at my work, I work in a body shop and after my accident it has been there getting all new stuff for the spring!!
 

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How quickly would it drain the battery if it was not turned off? I'm not sure personally about the escort, but I know a lot of the other cars I've driven, the fan will stay on awhile after the car is shut off so that it will cool down a bit. I really don't think I've acctually seen my escort fan on at all.
 

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What happened to your temp guages??? Mine's right screwed up...EVERYTHING'S been replaced...rad, hoses, thermostat, headgasket....and the temp gauge is all over still....but not sure how it electrical is for the gauge.
Oh yeah, the engine coolant temp sensor has been replaced and the small sensor behind that has been too....93 lx.
 

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Discussion Starter · #9 ·
Jlaasf84 said:
What happened to your temp guages??? Mine's right screwed up...EVERYTHING'S been replaced...rad, hoses, thermostat, headgasket....and the temp gauge is all over still....but not sure how it electrical is for the gauge.
Oh yeah, the engine coolant temp sensor has been replaced and the small sensor behind that has been too....93 lx.
I managed to break the GT one when swapping

so I put the GTX one back in which reads backwards anyway, and then the wire came out of the plastic connector on the wire harness... and I can't splice it back in.

so I need to find a BP in a junk yard and pull its temp sensor and wire with a connector so I can splice it into mine.

its worrisome not having a temp gauge
 

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The cooling fan will only draw 2-3 amps once it's running. Start-up instantaneous current in-rush will be less than 10 amps.

The fuse that protects that cooling fan circuit (and the reason the fuse is rated for 30 amps) is because the ignition circuit is also protected by that fuse; the ignition circuit is the main reason the fuse is rated so high. Perhaps a poor coupling for the purpose of load protection, but people get misled about what the fan draws.

Fans are not resistive loads. They rotate and push air. That doesn't do a whole helluva lot to discharge your battery. Your battery could run that fan all day without much problem.

One member of this site already left because of a "discussion" he and I had about fan loading and battery discharging. The problem, of course, was the two 12" subs in his car and the fact that his alternator was pooched.
 

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I have my fan wired through my ignition and a toggle. When the car is running the switch can be flipped and the fan will run when my turbo timer shuts the car off it shuts the fan off too. I also have the fan on a relay relay. Dont wire stuff right off the battery thats just messy and lazy.

But yeah if you need any help just call me Adam. Ill take some pics or try to explain how i did it.
 

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Discussion Starter · #12 ·
Willum said:
I have my fan wired through my ignition and a toggle. When the car is running the switch can be flipped and the fan will run when my turbo timer shuts the car off it shuts the fan off too. I also have the fan on a relay relay. Dont wire stuff right off the battery thats just messy and lazy. Thats like them people that get fog ligths at pep boys and are to lazy to wire them to the parking lights so they go right off the battery and then to a switch. LAME :roll:

But yeah if you need any help just call me Adam. Ill take some pics or try to explain how i did it.
well actually, I wired mine through one of the unused connectors in the engine bay. I found it was only hot when the ignition was on so I wrigged it up to the fan power wire.

I guess it would be nice to have a toggle switch... but I'm hopin that it will come on normally after I get my coolant temp sensor back in operation.

if it doesn't though, yea Bill I may be callin to see how ya did it... I'm sure my fan won't last that long being on the whole time my car is running.

thanks bro
 

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marclar said:
theres a few ways you could do it. first is get a wire and atach it to the hot side of the battery with a switch and splice it into the fan. the second is to get a realay, hook the relay switch to the "run"position on your ign switch, then do the same by splicint the fan hot wire thru the relay then to the battery. quite simple. just make sure you use a relay that can handle 30-40 amps.
That is more work then you need to. The fan kicks on by being grounded. If you take the fan switch wire in the termostate houseing and run strait to ground the fan will always be on when the car is on. Why make more work or extra wires?

As for the senser, I had to get a new one for my car. I had to bite the bullet and spend $80 from the ford dealer. You might get lucky and find it cheaper at the mazda dealer.
 

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Just take apart the relay housing for the fan...and jamb a little chunk of plastic under the lever so it's always connected ;-) lol
 
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