HVAC Motor does not work
Thread Starter
6th Gear
Joined: Jul 2010
Posts: 6
Likes: 0
From: Dripping Springs TX
HVAC Motor does not work
Replaced blower control module based on info from other thread that indicated likely cause for blower not working was the resistor pack. I have the dual control auto a/c. Still does not work. Will pull blower motor and check for debris. Will hit it a couple times first. Had pulled blower fuse 51 in panel under passenger side before replacing bc module. Had slight blue flash when reinstalling. Pulled fuse and appeared OK. What next? Can autozone do bench test on blower motor? 
Tech Contributor
Joined: Dec 2006
Posts: 10,962
Likes: 29
From: Van Buren Arkansas
Wounded Warrior Escort '11
A blue flash usually means the fuse blew again therefore a short, but its possible there was just a load on it which would be surprising if the ignition was off while you are replacing the fuses. Yes, check the motor to see if it turns manually. You can check it with an ohm meter.
Safety Car
Joined: Dec 2004
Posts: 3,526
Likes: 20
From: Santa Fe TX
My blower motor quit just the other day. You can bench test it by hooking it to a car battery (or maybe just a 9 volt)
Be careful as it will spin fast with a full 12V
If it works, then it's wiring. My problem was the ground was bad. I just added a ground to the metal glovebox frame nearby.
BTW I took it out 5 times before I figured out it was a bad ground.
Be careful as it will spin fast with a full 12V
If it works, then it's wiring. My problem was the ground was bad. I just added a ground to the metal glovebox frame nearby.
BTW I took it out 5 times before I figured out it was a bad ground.
Thread Starter
6th Gear
Joined: Jul 2010
Posts: 6
Likes: 0
From: Dripping Springs TX
Thanks for the assist. Motor bench tested fine. Added the ground and then put the blower back in. The second I clipped the leads back in the blower came on full speed. The keys were on the console!
So, I disconnected the new ground from the black wire and the motor stopped. I put the key in and turned to the on position and checked the fan operation. It worked perfectly! What a hoot.
So, I disconnected the new ground from the black wire and the motor stopped. I put the key in and turned to the on position and checked the fan operation. It worked perfectly! What a hoot.
