2007 Blower fan issue

[bt93]

My 07 has 205,000 miles on it and the front blower quit, rear still works. I checked all fuses and relays and all check good. The fan comes on for a split second then stops. I probed the wires to the blower and its getting power. and ideas on what to do next? I searched forever but never found a thread.

 

[stamp11127]

Welcome to the site.

Do you have manual controls or the EATC? There are a few threads on here dealing with blower issues. Have you checked for power to the blower once it quits?

 

[bt93]

Just got it sorted out. The resistor was bad but unlike others have experienced it did not revert to wide open fan.

 

[bt93]

Well, i just thought i had it fixed. Now it cycles on and off on high but blows constantly on all other settings.

 

[stamp11127]

Now what is the plan?

 

[bt93]

Now what is the plan?

I have no idea. I recently bought this rig and its riddled with problems. I have a ton of work to do

 

[Flexpedition]

How does the female connector look that you plugged the new blower speed control module into? Are the 2-3 larger wires soft and pliable, or are they hard and discolored, a sign of heat damage?

9L3Z-19E624-B

My own experience from other Fords, I've learned the lesser expensive resistors (ebay, amazon) fail super quick.

 

[bt93]

How does the female connector look that you plugged the new blower speed control module into? Are the 2-3 larger wires soft and pliable, or are they hard and discolored, a sign of heat damage?

9L3Z-19E624-B

My own experience from other Fords, I've learned the lesser expensive resistors (ebay, amazon) fail super quick.

the Resistor came from oriellys https://www.oreillyauto.com/detail/...ford/expedition?q=Blower+Motor+Resistor&pos=5. I'm not even certain that its the correct one. wires seem to be in good shape not brittle or disclolored and pins look good too.

 

[stamp11127]

Technically the part is a blower motor module - a little electronic box instead of the old style blower motor resistor.
There is usually too much current draw when the motor cycles on & off and set to "high speed". This causes the module to cut power to the motor, let the electronics cool and reset and turn back on.

 

[bt93]

Technically the part is a blower motor module - a little electronic box instead of the old style blower motor resistor.
There is usually too much current draw when the motor cycles on & off and set to "high speed". This causes the module to cut power to the motor, let the electronics cool and reset and turn back on.

Could a worn blower motor cause this? A blower motor with 200k miles on it?