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A fuse blows when an excessive amount of current is flowing through the protected wiring. Only parts using electricity in AC are the clutch and fan. Use an ammeter to identify which is the culprit and replace defective part.
this fuse probably controls the ac clutch operation and/or the blower fan motor.. Disconnect the ac clutch at the connection next to the clutch pack behind the pulley. fit new fuse and if it blows then the problem will be in the fan motor control/ motor. If not then it will be the ac compressor clutch pack
Let's break this down.
1 Does the fuse blow when the heater is on, or just the AC?
Yes- Fan motor problem likely need new blower motor.
No- 2
2 Disconnect the AC compressor clutch wire. Remove the blown AC fuse, connect a multimeter across the sockets for the fuse, measure DC voltage across the two sockets with the AC switch, and Ignition switch ON. Is Battery voltage present?
Yes- The wiring harness has a short between the output of the AC switch and ground, likely a pinched harness.
No- The AC compressor clutch is shorted. Replace either the whole compressor or the clutch.
i had this problem....it was the little ac fan in front of the radiator. must have picked up a rock and offset the fan blades so the shaft wouldn't turn and of course blow the fuse everytime i turned it on.
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