Heater blowing less

[Mr.Jack]

When I turn the fan to maximum it is blowing weaker/less than before. (Front.)
What can it be?

 

[treehan77]

When I turn the fan to maximum it is blowing weaker/less than before. (Front.)
What can it be?

Do you have manual or auto temp controls

 

[Mr.Jack]

Auto.
I have read it could be the control module kit? Also called the blower motor resistor.

 

[treehan77]

Do some thread searching in here, that does seem very common. Not sure, I know hats a problem when putting manual in certain fan speeds, I assume the auto would be he same resistor problem, but I only remember manual ones for whatever reason

 

[Mr.Jack]

Working on that search. Trying to figure out if it is the control module kit or the blower motor, or both. So I guess i will just purchase and intall both.