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Old 03-27-2008, 12:26 AM   #1
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Default coolant sensor or fan switch?

I have a '90 miata and on top of the thermostat housing there is either a sensor or switch that broke in half(don't ask). It has a 1-prong connector in the top of it but i lost that part(again, don't ask) so I don't know what it's called, help me out?
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Old 03-27-2008, 12:27 AM   #2
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a temp sensor?
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Old 03-27-2008, 12:33 AM   #3
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you sure?
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Old 03-27-2008, 12:35 AM   #4
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Pretty sure that is the fan thermoswitch.
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Old 03-27-2008, 12:48 AM   #5
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yeah, dont know the 1.6's that well, im pretty sure it just grounds the fan on at certain temp. aka thermoswitch as chad says
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Old 03-27-2008, 01:10 AM   #6
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thanks i'm off to mazda tomorrow
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Old 03-27-2008, 09:44 AM   #7
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Yup, fan switch.
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Old 03-27-2008, 09:47 AM   #8
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thermoswitch - dig into the switch top and find the lead, then solder a wire to it, and use a spade connector to connect the two wires.
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Old 03-27-2008, 09:52 AM   #9
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N350-18-840, US dealer retail $45. No idea what it goes for in Canada, but as their typical custom, I'd expect a fair bit more.
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Old 03-27-2008, 01:54 PM   #10
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I paid about 15$ for mine at an auto parts store, and yes its the thermo switch for the fans, when i got my car i never knew why my fans wouldn't go on lol, dont go to dealership they are a rip off try napa autoparts
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Old 03-28-2008, 02:24 AM   #11
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lol same deal with mine the car came to me with no fans working unless i jumped the leads in the diagnostic box... actually only one came on so i guess i'm gonna have to replace that other motor... but yea $65 at mazda i checked canadian tire and we didn't carry and napa not in stock so i just figured i'd go today.
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Old 03-28-2008, 08:19 AM   #12
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Another source for a part like that is at the Hyundai dealership. They use the Mazda motors in some of their cars and the parts are sometimes cheaper.
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Old 03-28-2008, 09:19 AM   #13
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Quote:
Originally Posted by momo182 View Post
lol same deal with mine the car came to me with no fans working unless i jumped the leads in the diagnostic box... actually only one came on so i guess i'm gonna have to replace that other motor... but yea $65 at mazda i checked canadian tire and we didn't carry and napa not in stock so i just figured i'd go today.
isnt the one a radiator fan and the other the ac fan? the other fan should come on when you turn ur ac on. if u want them to both turn on at the same time try this http://www.miatamx5.com/fans.html
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Old 03-28-2008, 12:36 PM   #14
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oh thanks for the site well the guy i bought the car from ripped out the a/c compressor and now i have it in a box somewhere. but yeah i'll try that wiring thing
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