Is blower and air conditioning pump on the same fuse or cycle together

2002 FORD EXPEDITION
172,669 MILES • 5.4L • V8 • 4WD • AUTOMATIC
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TERRY MORRIS2
  • MEMBER
  • 1 POST
I turn heater on and switch it either. Setting,you can hear the air containing pump making bad noises.and motor tries to shut off. Switch the blower motor off,and everything is fine. I need a new A/C system I already know this,but what can I do to bypass this so I have my heater its cold.
Dec 21, 2019 at 6:04 PM
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JACOBANDNICKOLAS
  • CAR REPAIR CONTRIBUTOR
  • 110,190 POSTS
Hi,

The A/C compressor will engage in the defroster setting regardless of the temperature requested. Does it also happen when you just turn the heater on at floor level? As far as the A/C issues, it sounds like the compressor is locked up. Have you checked for that? If it is, then either the compressor needs replaced or you can get an A/C bypass pulley. Basically, you remove the compressor and bolt on a bypass pulley in its place.

Let me know.

Joe
Dec 22, 2019 at 12:03 AM
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