Eng/Rad Mounted Cooling Fan Temperature Switch
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Eng/Rad Mounted Cooling Fan Temperature Switch
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Factory Air Eng/Rad Mounted Cooling Fan Temperature Switch

Part No. 36521 Warranty Details  

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Our products are engineered and tested to provide years of trouble free operation. Backed by over 50 years of mobile a/c experience, fix it once and fix it right with Factory Air.

Product Features:
  • Contains gaskets, o-rings, or seals to properly replace the product
  • Brass construction for accurate temperature sensing
  • Zinc coated terminal to resist corrosion
  • Vehicle specific applications
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Mounting Location:Eng/Rad Mounted Cooling Fan Temperature Switch


by PowerReviews
Factory AirEng/Rad Mounted Cooling Fan Temperature Switch

(based on 1 review)

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Reviewed by 1 customer

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from Lawrenceville, Ga.

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Level 2


  • Easy To Use


    Best Uses

    • Small Cars

    Comments about Factory Air Eng/Rad Mounted Cooling Fan Temperature Switch:

    I verified that my existing switch was broken and purchased this part as a replacement. It fit and plugged in just like the o/e part. I then wasted 3 hours testing the rest of the fan system before pulling this switch and placing it in boiling water (212 degrees or greater) The factory rating on switch is 93 degrees celcius (199.4 farenheit). the switch never made contact. I will try the warranty route tomorrow and see if another is better.

    • Was this a gift?:
    • No

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    Ask a question, get answers from real customers and in-house experts. For further assistance, please review your support options on our Contact Us page.

    5 Questions | 7 Answers
    Displaying questions 1-5
    • Q:

      Where does this go on a V4 2001 Honda Accord EX?
      Asked on 5/24/2016 by Cease from Miami, FL

      1 answer



        Hi Cease, I'm happy to help you! This Cooling Fan Temperature Switch - Part No. 36521 is located in the thermostat housing on your 2001 Honda Accord EX.

        Answered on 5/25/2016 by Solomon from AAP
    • Q:

      At what temperature does this switch close?
      Asked on 7/17/2012 by brab

      1 answer



        The closing temperature of the Factory Air Switch (Part No. 36521) is 188 F. For any further assistance please feel free to call us at: 1-877-238-2623 or visit the nearest Advance Auto store and one of our representatives will gladly assist you with any questions or concerns you may have.

        Answered on 7/18/2012 by John the Car-Doc from AAP
    • Q:

      If the radiator fans turn out but the air compressor does is it still this part?
      Asked on 5/1/2012 by Anonymous

      1 answer



        The radiator fan switch should be the possible cause of the problem. However, check with the wires and sockets connected.

        Answered on 5/4/2012 by Vincent from AAP
    • Q:

      is there a way to confirm that the switch is bad by bringing it in?
      Asked on 11/29/2010 by Kburkett from tampa, fl

      3 answers



        Advance Auto Parts will not test this particular product at the store. We would suggest taking your vehicle to a certified mechanic for a proper diagnosis before buying and having parts installed that may not solve or be the problem.

        Answered on 11/29/2010 by Ron the Auto Parts Rebel from AAP
      • A:

        In my 1996 Honda Civic LX with D16Y7 engine I researched two Honda manuals for 2 days and understand the cooling fan relay circuit logic well. I checked the fuses, then tested the relay by swapping it with the IDENTICAL relay in the engine compartment for AC with the AC running to see the AC fan come back on. Then I tested the voltage in the relay socket and got the same as the manuals for a cold engine. But it was very hot. So finally, after also checking that my switch is supposed to completely short it's contacts, I briefly touched a jumper to it's connector contacts and witnessed the fan come on that otherwise would not. So, the switch is either gone bad or cool and dry. I know it still had hot water, because I tried the heater. Note: heater does NOT cool enough to keep car from over heating if you drive the car! If I had just jumped the contacts on something else, I would have risked having damaged that circuit. 2 days research on this well spent.

        Answered on 10/1/2013 by sithigh from near Washington, DC
      • A:

        You can unplug the switch and jump the two wires in the connector. If the fan relay and motors are in good order, the radiator fan will come on. It won't hurt anything to jump the wires, and you can drive the car for a short time to get out of a jam, but will eventually wear out the fan motor or burn up the relay if left connected this way for too long. At normal operating temp or above, the switch terminals should show continuity, and below normal temps, you should show open circuit between the switch terminals.

        Answered on 7/14/2014 by zombiewoof from Lawrenceville,ga.
    • Q:

      What is this switch used for? Is it the Coolant Temperature switch? If so, will it fit a 2000 Honda Civic?
      Asked on 9/16/2010 by jhwongso

      1 answer



        This is used to turn on and off the radiator fans or ac compressor.

        Answered on 9/16/2010 by Kevin from AN
    Displaying questions 1-5

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