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If the heater is blowing the fuse when the blower is turned on, I would suspect the blower motor is defective or locked up. If the A/C is blowing a fuse, suspect a bad clutch, or locked up compressor.

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โˆ™ 2005-05-10 18:32:12
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Q: Have a 91 Cavalier htrac fuse blows as soon as turned on have checked blower motor relay and inline fuses have also checked blower control switch If any answer please tell what to check and where?
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