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Old 11-11-2017, 09:04 AM   #1
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Heater blower motor is not working.

Heater blower motor is not working and I have been over everything to find a fuse. Is was working fine last spring at all speeds. I have tapped the motor to see if it has hung up over the summer. I was wondering if this was a common problem like some vehicles have.
The vehicle is a 1990 Ford E250 without rear heat.

Any and all help would be GREATLY appreciated.

Thanks Patrick
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Old 11-11-2017, 01:48 PM   #2
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FUSE BOX DIAGRAM
1990 Ford Econoline

The fuse for the blower motor is common with the AC clutch.
Check to see the AC is working .
I would change the fuse even if it looked good .
You can also check -
* blower motor relay
* fan speed switch
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Old 11-11-2017, 02:47 PM   #3
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Thank you JackTuppVan, I replaced that fuse and still nothing. Does that wire lead up to the low to high switch on the dash next to the defrost vent and floor lever? I have that apart and cannot find power there...
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Old 11-11-2017, 04:43 PM   #4
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When you test for power make sure
The keyed ignition switch is ON
The selector switch needs to be in any position EXCEPT OFF

"The front blower feed comes from the orange/black wire which comes from the blower motor. The power is fed from a fusible link and passes through the blower relay when the mode switch is turned to any position besides OFF. Once it passes through the relay it goes through the blower motor to the blower switch. You would want to first check the power from and to the blower motor to see if it is present to that point, with the switch in vent mode and blower on HIGH(test mode incase the resistor is bad which might otherwise hamper diagnosis), and check for power on the orange/black wire at the blower motor (with blower plugged in) as well as on the orange/red wire at the blower motor. If power IS present on the orange/red wire but not the orange/black then the blower motor has an open circuit and is bad, if no power on the orange/red wire ,then either the relay has failed, or the mode switch is not sending power to the relay to turn it on. by jumping the 2 main terminals on the relay you can test the blower motor and its associated wiring as well as the fusible link, if the blower operates then that part of the circuit is ok and the fault lies with the relay or the mode switch. another easy test is to swap out the relay with a known good unit , as relays are common to fail when older. "

information source -

https://www.justanswer.com/ford/41oy...ked-fuses.html

more useful info here -

No Power to Heater Blower | FordForumsOnline.com
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Old 11-12-2017, 06:46 AM   #5
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Again thank you so much JackTuppVan,
This helps so much and I am off to try and trace this down...
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Old 11-18-2017, 05:13 PM   #6
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It ended up being the blower motor relay. One of the three prongs had rusted off. Thank you for the great information JackTupVann. It helped me track it down. ☺
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Old 11-18-2017, 06:42 PM   #7
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No problem.
I'm glad the information helped
and that you got it fixed.

BTW I like your van.
I would like to see how the interior build progresses.
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