When I first got my Z and cleaned out the heater compartment where the blower goes it was filled with lots of junk. I think the cold finally got to the motor.

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Mike Tubiak
1978 Datsun 280Z - HLS30-438694

Wait ~ is it completely dead now, or does it still spin some? If it responds at all, you have current running to the motor so your fuses are OK.
If you have a bad bearing or something dragging against the drum, that could cause some connection to overheat and blow a fuse.
In your fusebox, check all the fuses (esp any marked HEAT or COMMON). Make sure it isn't a 15 cent fix before you buy a $60 motor.

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1970 240Z

Yep dead. And there is no heat fuse. I checked the fuses and they look good. Is there a relay or something? I'm pretty sure the motor is shot.

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Mike Tubiak
1978 Datsun 280Z - HLS30-438694

Check the fan SWITCH. They have been known to come loose or go bad.

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John Taddonio
1970 240Z
1977 530Z
1984 300ZXT
zcarnut@hotmail.com
FB: Zccr zcarclubofrochester

funny I just thought about that when I got in the Z this morning. I'll check the switch.

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Mike Tubiak
1978 Datsun 280Z - HLS30-438694

i'll have to buy a circuit test kit. i really got to solve this problem soon. it's cold out there.

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Mike Tubiak
1978 Datsun 280Z - HLS30-438694

I always put battery power directly to a motor to test it. It's the quick way to know if it even is the motor. Could be fuse, relay, wiring or a switch if the motor works. Also, if a blower motor works just on Hi, (in most cases), the blower resistor is bad, (if equipped.)