90,420 sel,AC trouble

[just-n-time]

Hello gang, I havew not had the chance to visit this forum for some time now,clad to be back, I have a question to ask of the A/C groupies. My wife has had some troubles with her car, when she first starts the unit in the AM it works fine (the blower motor) but after a few secounds( perhaps a min.) it slows down and you can here the motor,(sounding like it is stiking somthing) OK let me tell it in my own words or we will be here all night! starts up fine the blower on auto,it winds to its high speed,then as if reaches cool level,the motor slows and has a draging sound to it,some one send me some test procedures,and where I will find the relays and so on. thanks JNT