Hello all, I took my truck to autozone to get a new flasher relay because my old one was making alll sorts of noise. After replacing nothing was fixed. I moved my tilt steering up and magically my blinkers worked. in the mean time the autozone guy was messing with the relays under the steering column and then in noticed my heater wasn't blowing any air, i turned it to A/C and still nothing, defrost nothing. so I replaced the relay next to the flasher relay and still nothing, any idea's?

also the manual says nothing about a fuse designated to the blower fan, and all fuses checked out ok!!

Thanks

 

My blower quit too and I'm trying to diagnose the problem.
2000 F150 4.6L

Now, if it only worked on the two highest speeds I'd know exactly what to do since that issue seems to have been covered ten million times.

However, my blower just doesn't work at all...ever...on any speed.

I want to check the fuse first but don't know which one(s).

After that I want to check power to the blower motor, but I'm not sure which wire is which on the motor itself.

any help is appreciated!

 

Anyone with a solution?

 

Likely problem with the blinkers is the multifunction switch. That's the turn signal/high beam/wiper switch. It's all one unit - you need to pop off the plastic cover around the column to get it out. (I see the OP is several months old, so maybe this is irrelevant now)

Blower could be a lot of things. Could be bad ground, bad connection, fuse (in the underhood panel, perhaps), resistor pack blown, bad blower motor... No magic to electrical problems, just start looking for voltage where it should be (at the blower motor) and if you don't find it, kepp moving upstream until you find the issue. But always check fuses first.

-Dave

 

Its the blower relay located way up in the dash between the steering column and cigarette lighter. If its the resister pack it will work on high only.