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Q:

heayer blower motor on 1991 Jaguar Vanden Plas

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
heater blower motor does not seem to work on any setting. i turn on the defrost and the blower motor comes on sometimes for about 20-30seconds. whats my problem and what can i do to fix it to gain additional heater control!
(1) Answer
in my case it was the blower motor itself. the bearings had lived their life and died. seems that more current is used on defrost setting and this then overcomes the binding bearings. I had to replace the fan. try connecting a 12v hot lead to fan and see if it runs and if you hear bearing noise.