Blower motor kicking on and off

[Mochathrone]

I got an 08 gt and i keep having this problem where my air will blow and randomly cut off ive replaced the fuses in the passenger side and the relay in the engine bay and ive also replaced blower motor and resistor what could it be?

 

[Blue03Cobra]

Low on refrigerant?

 

[86GT351]

What specific year is it?

 

[86GT351]

Maybe this can help

 

[brasil]

Blue03cobra named it.. low refrigerant ! The low pressure forces the compressor to go on -shut off in very short intervall

 

[Juice]

OP said Blower Motor, not the compressor.

 

[brasil]

OP said Blower Motor, not the compressor.

..ups. you are right . Sorry for my mistake.

 

[Forty61]

Find the schematic.. if you've replaced the blower itself, fuses and the resistor you probably either have a loose wire somewhere or the actual speed knob is failing. My wife's old Hyundai had a similar issue where the speed of the blower would alternate at random, it was a faulty speed knob on the dash.

Does it go on and off at all speeds or just one?

 

[86GT351]

Find the schematic.. if you've replaced the blower itself, fuses and the resistor you probably either have a loose wire somewhere or the actual speed knob is failing. My wife's old Hyundai had a similar issue where the speed of the blower would alternate at random, it was a faulty speed knob on the dash.

Does it go on and off at all speeds or just one?

Wiring postd above