Second fan not coming on when I turn the AC on

Asked by Jun 24, 2017 at 02:31 PM about the 1995 Subaru Legacy 4 Dr L Wagon

Question type: Maintenance & Repair

3 Answers


If you are referring to the second speed of the inside fan blower motor, (heat/Ac). The most likely the problem is the resistor pack. This twenty-thirty dollar part has various stages of resistance to speed up the fan as the the switch is turned up. Do not buy a used one - it is not worth the headache. Go to a parts store and get a jobber part to save a lot of money. If it is the electric fan on the radiator, then check the temperature sensor switch, (usually mounted in the radiator). When the sensor reaches a certain temperature, it closes the circuit and turns the radiator fans on. You can test these with a multimeter a the plug when it is connected and running. If this is normal, check power coming in with the plugs disconnected and ignition switch turned to the accessory position. Lastly, you can turn off the ignition, set a jumper between the plug not connected to the sensor. If you switch the ignition on and the fan does not work it could mean you need a fan motor. Almost always it is the sensor though. If you only have one fan, do not run it till hot to test the sensor. Instead remove the sensor from the radiator, hook up the multimeter to both leads in the plug. Set the meter to Ohms. It should read zero. Put sensor into a small pot of water being careful to keep the plug away from the water. Bring up the temperature of the water and if you get a reading when hot the sensor should be okay.

1 of 1 people found this helpful.

Run a hot wire to the 2nd radiator fan to see if the motor will work.


Easier to just buy a rad fan switch and screw it i after checking rad fan as FOR suggested. Nice tutorial, tm. You got my vote!

Your Answer


Looking for a Used Legacy in your area?

CarGurus has 320 nationwide Legacy listings starting at $3,295.

Postal Code:

Subaru Legacy Experts

  • #1
  • #2
  • #3
View All

Related Models For Sale

Used Subaru Impreza
36 Great Deals out of 726 listings starting at $2,994
Used Honda Accord
51 Great Deals out of 1,254 listings starting at $1,350
Used Toyota Camry
28 Great Deals out of 1,940 listings starting at $1,995
Used Honda Civic
258 Great Deals out of 4,531 listings starting at $1,980
Used Nissan Altima
67 Great Deals out of 1,223 listings starting at $1,900
Used BMW 3 Series
123 Great Deals out of 2,093 listings starting at $3,395
Used Toyota Corolla
130 Great Deals out of 3,633 listings starting at $2,495
Used Honda CR-V
38 Great Deals out of 2,809 listings starting at $300

Used Cars For Sale

2018 Subaru Legacy For Sale
32 listings starting at $23,777
2017 Subaru Legacy For Sale
59 listings starting at $22,880
2016 Subaru Legacy For Sale
20 listings starting at $18,898
2015 Subaru Legacy For Sale
7 Great Deals out of 71 listings starting at $13,595
2014 Subaru Legacy For Sale
33 listings starting at $10,388

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.