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1984 E150 Blower Motor Low Air Flow

Old 03-14-2019, 09:54 PM
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Join Date: Mar 2019
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Default 1984 E150 Blower Motor Low Air Flow

In my 1984 e150, I recently replaced my blower motor as the old one squealed terribly. Now that I've re-assembled and fired it all up, I get little to no air flow out of any of the vents. I can feel that it is warm air when the heat is on, there is just very little flow. When I adjust the fan speed with the selector switch, I can hear it change speeds, but there isn't any noticeable difference in air flow.

Any suggestions?

Old 03-15-2019, 11:34 AM
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Join Date: Jun 2010
Posts: 8,958

Did you make sure the motor is rotating in the same direction as the one you removed?
Something you could try,
You would maybe need to remove the glove box so you could see most of the duct work.
There should be a passage for the motor to pull in outside air. make sure that is not blocked.
If that checks out OK, then follow the ductwork to confirm no doors are jammed in the closed position.
Old 03-15-2019, 02:00 PM
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I did not check the direction of the new motor vs. the old - the wire colours (orange and black) matched up so I connected the new wires to the old and re-installed. It didn't make any sense to me that they would be different (maybe a rookie mistake on my part). There is no glove box to remove, it would mean disassembling the dash to check the ducting (very possible but not ideal). Thanks for the input.
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