Blower motor / interior fan issue

[opethmike]

Had some rather strange behavior with my blower motor on today's drive. Sometimes the motor would blow nice and strong, sometimes it would blow weak like it was on a low setting, and sometimes it would cut-out and not blow at all.

Circuit breaker?

[David T]

Had some rather strange behavior with my blower motor on today's drive. Sometimes the motor would blow nice and strong, sometimes it would blow weak like it was on a low setting, and sometimes it would cut-out and not blow at all.

Circuit breaker?

Circuit breaker and/or the bearings in the fan are shot and you need a new motor. Do you have the uprated circuit breakers?

[DMCMW Dave]

Circuit breaker and/or the bearings in the fan are shot and you need a new motor. Do you have the uprated circuit breakers?

If it was on something other than "max" you could also have a blower resistor on the way out.

[opethmike]

Motor is new, just a few weeks old. The circuit breakers, relays, and fuses were updated in 2004, prior to my ownership.

Dave, this was all happening on max; which is the only setting I ever use. So leaning toward the circuit breaker then?

[DMCMW Dave]

Motor is new, just a few weeks old. The circuit breakers, relays, and fuses were updated in 2004, prior to my ownership.

Dave, this was all happening on max; which is the only setting I ever use. So leaning toward the circuit breaker then?

Or something you never hear about- check your grounds.

Also all those upgrades are now 10 years old. Parts do wear out!

[Bitsyncmaster]

Was the blower on speed 4? Just running MAX AC does not affect the blower speed.

[dmc]

Had some rather strange behavior with my blower motor on today's drive. Sometimes the motor would blow nice and strong, sometimes it would blow weak like it was on a low setting, and sometimes it would cut-out and not blow at all.

Circuit breaker?

Could just be the evaporator icing up. Was the humidity high.

[opethmike]

Was the blower on speed 4? Just running MAX AC does not affect the blower speed.

Yes, speed 4, sorry, I should have mentioned that.

Dave S - where is the grounding point for the blower motor? The ground cluster on/near the radio bracket?

[Rich]

Try this:
LINK: http://dmctalk.org/showthread.php?1301-Ground-Location-List (http://dmctalk.org/showthread.php?1301-Ground-Location-List)

Be sure to open the images in that post. They have details that match to the diagram.


....where is the grounding point for the blower motor? The ground cluster on/near the radio bracket?

[opethmike]

Folks,

I fixed this issue today. Turned out to be the circuit breaker. I put a new one in, and went for a 45 minute drive without any further blower motor issues.

Thanks all!