blower fan problem and question

[cajun72blazer]

Hey Guys, I need your help. I am not sure what part needs to be replaced or what need to be fixed, but here is the issue. When I turn the fan switch to first on position i can hear the blower fan bearly turning, second position blower fan turns fast enough tp push a little air out the vents, but not as fast it did last week, and the thrid position (Hi) the blower fan turns off. Is it the motor, switch, or speed resistor? Is there a way I can easly test each part?
Thanks in advance for your help, Blake

 

[Topdown]

damn, thats a tough one... It sounds like the switch to me... luckily each part is pretty cheap and if your driving a 72, they all need to be replaced. I tried to do what you are doing and just replace the one piece that was bad... but the new parts quickly make the older worn out parts go bad too.

 

[cajun72blazer]

Thanks for the hep. The problem was the A/C Blower relay.

 

[supersize75k5]

Hey Guys, I need your help. I am not sure what part needs to be replaced or what need to be fixed, but here is the issue. When I turn the fan switch to first on position i can hear the blower fan bearly turning, second position blower fan turns fast enough tp push a little air out the vents, but not as fast it did last week, and the thrid position (Hi) the blower fan turns off. Is it the motor, switch, or speed resistor? Is there a way I can easly test each part?
Thanks in advance for your help, Blake

damn I was hoping to see a weiland 8-71 or something

lol