blower motor or switch

[plowguy1225]

my 95 stroke f350 fan only works on high the blower motor has power in all positions so do u think its the motor or the switch? thanks for the help

[kanuck15]

id start with the switch, its easiest to fix

[plowguy1225]

thats kinda what i was thinking

[kanuck15]

easiest thing to do is swap out the whole head unit

[rthuck]

A blown resistor module sounds like it. It regulates the lower speeds and bypasses the module on high speed. You've already proven the motor is good.

[alberta 7.3]

Originally Posted by rthuck

A blown resistor module sounds like it. It regulates the lower speeds and bypasses the module on high speed. You've already proven the motor is good.

Most likely what the problem is