2002 Taurus fan trouble

Heater fan has been acting up lately. Only runs on high with both Air Cond. and Heater. On occasion will not run at all but then next day back to
only running on high setting.
Elrod
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

change resistor
hurc ast
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
Speed control resistsor block thermal fuse is fried. Easily replaced by changing the resistor block, located by two small self tapping screws in the blower discharge ductwork behind the glove boax, which is eary to remove. The fan is still running in fast because in that speed, all the resistors are bypassed, and the thermal fuse, which protects against overheated speed control resistors if the motor were to stall in other speeds, is cut out of the circuit.
You probably had a stall on the motor due to something like ice from ingested water or snow in the fan impeller somewhere along the line. Howerver, you said that on some days your fan is not running even in fast speed. In that case, you may have a bad set of bushings in the fan motor that are causing it to stall. If so, you will need to solve that problem as well, or you will end up frying the new resistor bank thermal fuse in short order.

to
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

Motorsforum.com is a website by car enthusiasts for car enthusiasts. It is not affiliated with any of the car or spare part manufacturers or car dealers discussed here. All logos and trade names are the property of their respective owners.