Blower stops when A/C on high or max

[Rick Vyncke]

The blowers on our 2004 Marquis turn off after the A/C is run for a short while on high.  When they stop….the blower will not work on any speed for a few minutes.  After two or three minutes they will work again.

As long as I don’t run the blower on high it will keep working…. I assume that a circuit breaker is overheating?   Any ideas where to look??

[Fred Brooks]

      Rick,

     I would check the front "run panel" below the driver's window. It is a 20 amp circuit breaker that is overheating. The question is why. I believe both dash blowers and the condenser fan may be on that circuit. Hope this helps, Fred

[Rick Vyncke]

Thanks Fred!!!   At least one of the blowers seems to be squeaking at times. I suspect bearings…. I have new blower motors if I can figure out how to remove the center console.

[Fred Brooks]

    Rick,
That was the same issue I had on my coach. The blower motors are usually the issue. They do not have ball bearing assemblies but have bronze bushings that eventually dry up and bind the armature. As they bind up, they squeak and draw more amperage to operate. As far as access, it is kind of a puzzle but you can figure out how it was assembled. I am not sure on your coach, but my blower motors turn opposite of each other. Hope this helps, Fred