heater quit working

[agriffin]

This morning I started my truck after work and not heat. I only had heat on high before so I know the resistor is bad. Is there anyway the resistor would lose all voltage or is my blower motor junk. I checked the fuses so I know its not that.
Does anyone know if theres a way to fix the blower motor or will I have to replace it? Ive watched the video on how to fix the resistor.

[erbilabuc]

there should be a heater control valve thats stuck closed. Unless your fan only works on high?

[agriffin]

The fan only works on high. I tapped on the blower motor this morning a few times with my trusty adjustable wrench and it started working again. hopefully it stays working since its supposed to be in the single digits tomorrow.

[None2Slow]

I just did this last week. My heater only worked on high. Pulled the resister out and replaced it with a new part from NAPA for $25 and I have all speeds now. It took all of 10 minutes. Heres a video for you.

Replacing heater resistor on F-250 - YouTube

Replacing heater resistor on F-250 - YouTube

[agriffin]

Thanks for the video. Looks like this wont be getting done till its atleast back into the 20's. Currently 2 degrees out. I think I will live with high heat only right now.

[NoRalPh]

If you want to get it done in one shot, buy not only the resistor but the plug too.

1/2 the time the resistors are actually fine, what happens is that the $hitty connectors in the plug have corroded. Really, in a pinch, you can usually take everything apart and clean it up and everything will work again.

It's a common connection to fail and the Parts Stores usually carry the plug too (Dorman makes them)