I want heat!!!

Ryan Rønning · #1 (**permalink**) 12-25-2009, 05:51 AM

Still have the problem with my heater. Blower motor is not blowing so I thought it might be bad. Checked the voltage and there was none. Is there a relay for this because I checked all of the fuses and none were blown.

Please help as we cant use the car right now with the snow

***bigcountrysg*** · #2 (**permalink**) 12-25-2009, 05:54 AM

Well I would grab a multi meter and start checking at the switch. See if it is even putting power out to the blower motor.

ford powerstroke 79 · #3 (**permalink**) 12-25-2009, 06:13 AM

sounds like its your blower motor resistor it has four wires and its to the right of blower motor my quit working and thats what it was

**Dave** · #4 (**permalink**) 12-25-2009, 06:15 AM

its one of the two above things. Although when the resistor fails the low position on the fan switch generally still works

Ryan Rønning · #5 (**permalink**) 12-25-2009, 06:55 AM

Thanks guys. I will go check the resistor. Anyone have a wiring diagram for the heater/ac system to aid in tracing wire's?

superxcrewfx4 · #6 (**permalink**) 12-25-2009, 07:36 AM

I bet resistor, had that go on my f150 already this year and it was crazy rusty so i am willing to be the 13 dollar part went.

Ryan Rønning · #7 (**permalink**) 12-25-2009, 07:41 AM

Anyone know if the one off of my OBS will work. The blower moters had the same plug.

superxcrewfx4 · #8 (**permalink**) 12-25-2009, 07:46 AM

The f150 has two different kinds so I dont really know. Check napaonline.com and look at the pictures. Its really easy to get to and if you unplug it from the resistor i think it defaults to high speed.