poor blower motor performance on my 66 plymouth belvedere with ac

[terry scheirer]

66 plymouth belvedere 440 with ac blower motor works but not strong do they make a stronger blower motor that can be installed or any tricks to get it to blow stronger
thanks

 

[MoparLeo]

That was one of the problems with the old A/C's on Mopars across the board. Cold but no air volume. Can't really do anything. No faster motors or more efficient fans in the stock replacement size. Aftermarket A/C's shine in this area.

 

[1 Wild R/T]

Add a relay to the high blower circuit, you won't believe the difference....

Relays confuse you? want a shortcut to see if it's worth pursuing? Disconnect the power wire going to the blower motor, it's in the engine compartment about 3" from the blower motor... Hook a lead straight to the battery & then connect it to the blower motor... How much air flow do you have now? Well thats what a relay does...

 

[Slap Stick]

Your fan may be going bad, too. It might only need the guts cleaned and lubed.
There might also be dead leaves blocking airflow.

 

[RemCharger]

Maybe a bigger crank pulley...

 

[Dipstick]

Disconnect the power wire going to the blower motor, it's in the engine compartment about 3" from the blower motor... Hook a lead straight to the battery & then connect it to the blower motor... How much air flow do you have now?

Did that once and the blower motor got so hot the paint blistered.

 

[toolmanmike]

What are you comparing the "poor performance" to? The blower cages on these are quite small and don't have much force. Now, I haven't had a in dash a/c blower out. The under dash units are usually a dual squirrel cage and really have a lot of output. The last heater case I took apart had a nearly plugged heater core and the case was half full of debris and a mouse nest.

 

[1 Wild R/T]

Did that once and the blower motor got so hot the paint blistered.

Well then there was something else wrong with your blower motor.... It should be able to run a full 12v indefinitely...