Vannin' Community and Forums Forums Ford Troubleshooting 1978 Econoline Blower Motor Works but no air?

Just replaced the blower motor on my 78'. Tested everything before bolting it back in. Put everything back together and the heater fan runs like brand new.
But when I put my hand over the ducts at the top of the dash where you defrost the windshield, I don't hardly feel any air?
Blower is running as it should but it's like the ducting is disconnected or like the fan blades are running in the reverse direction (can only run 1 direction).
Does anybody know if there's a common place the ducting gets disconnected?
Do I have to look under the hood, or under the van?

Turns out the blower motor is spinning the the wrong direction! Squirrel cage only fits one way so you can't reverse the blades by flipping it upside down. Tested the old motor and it is in fact spinning counter colockwise which is the correct orientation for the fan blades. The factory must have put the magnet on upside down. Does not look like this can be opened.

Can’t you just swap the wires? This is common in reman motors

Welcome to universal motors, one need test rotation before install, swap wires on the motor around, I had to do that with my 73, it sucked big time too.