well I have no air blowing at high speed, it didn't work at all speeds. so I figured I would just look into what was replaced last time, it turns out there was some melting so I will fix that I guess and see if it works. if not guess it would be onto the blower motor itself. thanks for all the tips

 

is there a way I could bypass the resistor and make it work if I have nothing blowing at all right now??

 

Ground the black wire that goes to the fan and if the fan is OK it will run at full speed. The blower fan speed is controlled by the resistor regulating the resistance of the ground side of the blower motor circuit. At low speed there is more resistance on the ground than at high speed. That is what gives you the four different speed settings on the fan switch. If push really came to shove you could leave the black wire connected to ground and wire in a toggle switch on it. Then the fan would either be on full blast or completely off, there would be no low or in-between speeds. The blower fan has a 40 amp fuse in the Power Distribution Center too. Check it and check with a volt meter or test light to be sure you have power on the green wire with the ignition on.

Jimmy

 

would it require a toggle switch? or would just grounding the fan work??

 

If you just ground the black wire the fan would run full blast anytime the ignition is on. You need a switch to at least be able to turn the fan on or off while driving.

Jimmy