Blower motor - Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars

dannyda · 10-19-2009, 14:32

1990 - M. G. M.

All suggestions are greatly appreciated.

My blower motor does not put out the air that it should and since I have already replaced it twice I am looking for answers or suggestions. Vacume system has been checked and no leaks found all actuators move as they should, Resistor has been replaced. I can hear the blower motor change speeds when I move the selector from low to high. Barley any air coming out the vents and defrost, more air coming out the floor than the vents or defrost. Still not near as much as their should be. When selector is on high air coming out is like on low at floor and less above.

I just checked the voltage to the blower motor and recorded the following readings. This was checked with the engine running ( incase that makes a difference)

Low - 6.7 v
2 - 8.5 v
3 - 12 v
High 14 v

Thanks for your suggestions

**Bert** · 10-19-2009, 21:28

Does it switch from heat to vents and the air changes in response?

dannyda · 10-20-2009, 09:36

Yes it does. Everything works execpt the amout of air coming out.

dannyda · 10-20-2009, 09:38

Mainly looking to make sure I have the right voltage at all fan settings, before trying a 3rd motor.

**Bert** · 10-20-2009, 09:43

One thing for sure is the voltage on high is correct. It should be battery voltage and as fast as the blower can run. You may have a flap somewhere not moving. Does REC or Max run any different from regular?

dannyda · 10-20-2009, 16:41

Doesn'tmatter if I have A/c or heat on. Same thing happens. I thought 14 was high also for on high speed setting. Looks like I possibly recieved a second bad blower motor.