I can hear the a/c compressor cycle and I can feel cold air at the dash vent. But the blower will not come on and the blowet control slides with no resistance ad if it is not hooked up. Previous owner put in new radio and I think maybe hemessed up t he controls. I am thinking to remove the radiobsobI can gain access to the bloertrv control behind it. But I dont know what tolook for. Does anyone have a picture or drawing on comment yo h e lp. Thanks.
Blower does not work
- Thread starter Razorback
- Start date
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Yo Razorback,
Control Overview in 80-86; "Off- Vacuum is applied to Outside Recirc Door Vac Motor, closing that door to outside Air. Normal A/C - Outside-Recirc Door is open to outside air. The panel door directs air to the instr panel registers. The Temperature Control Lever moves a cable connected to Temp Blend Door that mixes heated & un-heated air In Defrost Mode; with No vacuum to any vacuum "motor" (cannisters looking thangs), air Flows to Defroster outlets (& air compr clutch is engergized) Vent - Outside-Recirc Door is open to outside air, as in Normal A/C. Vacuum is applied to the Panel Door Vacuum Motor, letting air flow only to the instr panel registers. In the same way, the defroster outlets are closed by the Floor/Defrost Vacuum Motor. Floor - The Outside-Recirc Door is Open to outside air. With No Vacuum at the Panel Door Vacuum Motor. The Panel Door directs air to the floor outlets. Mix - Vacuum is applied only to Port A of the Floor/Defrost Vacuum Motor positioning the Floor/Defrost Door at mid-position. Air Flow is split between the floor & windshield. There is no vac at the Panel Door Vacuum"
Control Panel Overview in an 86 from Owner's Manual by Ford via Steve
http://www.supermotors.net/registry/media/685581_1
HVAC Wiring Diagram
http://www.revbase.com/BBBMotor/Wd/DownloadPdf?id=27256
If the resist assembly is damaged, blower would operate in high speed.
Resistor pack Location in an 85; Resistor is shown in Red - some pics are gone
Source: by STUPID at http://s2.photobucket.com/user/foxbodyordeath/media/fsb2.jpg.html
".When the leaves build up on the resistor pack next to the blower motor, they can catch FIRE off the heat of the resistor. So here's a little how to that anyone can do:.remove your blower motor, you'll need a 5/16 socket to loosen the four screws, and it will easily pop out...
Blower motor pic at http://arrc.ebscohost.com/statics/p5/images/sm/isbn_graphics_complete/8576/chiltonimages/8576/85766019.jpg
1980–86 With Air Conditioning
NOTE: Do not discharge the air conditioning system.
Disconnect the motor wires at the hard shell connectors.
Disconnect the blower motor air cooling tube from the motor.
Remove four (4) blower motor mounting plate attaching screws and remove the motor and wheel assembly from the blower housing.
Remove the hub clamp spring from the blower wheel hub and the retainer from the motor shaft. Then, remove the blower wheel from the motor shaft.
To install:
Position the blower wheel on the blower motor shaft to the dimension shown. Then, install a new hub clamp spring on the blower hub as shown. The hub clamp spring is included with a new blower wheel but not with the blower motor.
Install a new ****** gasket on the blower motor ******.
Position the blower motor and wheel assembly in the blower housing and install the four (4) attaching screws.
NOTE: The wire clamp should be installed under the ***** closest to the resistor assembly.
Cement the blower motor air tube on the ****** of the blower housing with RTV silicone adhesive.
Connect the blower motor wires at the hard shell connectors.
Check the blower motor for proper operation.
1980–86 Standard & High Output Heaters, Without Air Conditioning
Disconnect the motor wire at the hard shell connector and the ground wire at the ground *****.
Remove four (4) screws attaching the blower motor and wheel to the heater case.
Remove the blower motor and wheel from the heater case.
Remove the blower wheel hub clamp spring and the tab lock washer from the motor shaft. Then, pull the blower wheel from the motor shaft.
To install:
Install the blower wheel on the blower motor shaft.
Install the hub clamp spring on the blower hub.
Position the blower motor and wheel to the heater case, and install the four (4) attaching screws.
Fig. 16: Heater case and plenum assemblies, 1980 and later standard and high output units without A/C
http://arrc.ebscohost.com/statics/p5/images/sm/isbn_graphics_complete/8576/chiltonimages/8576/85766016.gif
Control Overview in 80-86; "Off- Vacuum is applied to Outside Recirc Door Vac Motor, closing that door to outside Air. Normal A/C - Outside-Recirc Door is open to outside air. The panel door directs air to the instr panel registers. The Temperature Control Lever moves a cable connected to Temp Blend Door that mixes heated & un-heated air In Defrost Mode; with No vacuum to any vacuum "motor" (cannisters looking thangs), air Flows to Defroster outlets (& air compr clutch is engergized) Vent - Outside-Recirc Door is open to outside air, as in Normal A/C. Vacuum is applied to the Panel Door Vacuum Motor, letting air flow only to the instr panel registers. In the same way, the defroster outlets are closed by the Floor/Defrost Vacuum Motor. Floor - The Outside-Recirc Door is Open to outside air. With No Vacuum at the Panel Door Vacuum Motor. The Panel Door directs air to the floor outlets. Mix - Vacuum is applied only to Port A of the Floor/Defrost Vacuum Motor positioning the Floor/Defrost Door at mid-position. Air Flow is split between the floor & windshield. There is no vac at the Panel Door Vacuum"
Control Panel Overview in an 86 from Owner's Manual by Ford via Steve
http://www.supermotors.net/registry/media/685581_1
HVAC Wiring Diagram
http://www.revbase.com/BBBMotor/Wd/DownloadPdf?id=27256
If the resist assembly is damaged, blower would operate in high speed.
Resistor pack Location in an 85; Resistor is shown in Red - some pics are gone
Source: by STUPID at http://s2.photobucket.com/user/foxbodyordeath/media/fsb2.jpg.html
".When the leaves build up on the resistor pack next to the blower motor, they can catch FIRE off the heat of the resistor. So here's a little how to that anyone can do:.remove your blower motor, you'll need a 5/16 socket to loosen the four screws, and it will easily pop out...
Blower motor pic at http://arrc.ebscohost.com/statics/p5/images/sm/isbn_graphics_complete/8576/chiltonimages/8576/85766019.jpg
1980–86 With Air Conditioning
NOTE: Do not discharge the air conditioning system.
Disconnect the motor wires at the hard shell connectors.
Disconnect the blower motor air cooling tube from the motor.
Remove four (4) blower motor mounting plate attaching screws and remove the motor and wheel assembly from the blower housing.
Remove the hub clamp spring from the blower wheel hub and the retainer from the motor shaft. Then, remove the blower wheel from the motor shaft.
To install:
Position the blower wheel on the blower motor shaft to the dimension shown. Then, install a new hub clamp spring on the blower hub as shown. The hub clamp spring is included with a new blower wheel but not with the blower motor.
Install a new ****** gasket on the blower motor ******.
Position the blower motor and wheel assembly in the blower housing and install the four (4) attaching screws.
NOTE: The wire clamp should be installed under the ***** closest to the resistor assembly.
Cement the blower motor air tube on the ****** of the blower housing with RTV silicone adhesive.
Connect the blower motor wires at the hard shell connectors.
Check the blower motor for proper operation.
1980–86 Standard & High Output Heaters, Without Air Conditioning
Disconnect the motor wire at the hard shell connector and the ground wire at the ground *****.
Remove four (4) screws attaching the blower motor and wheel to the heater case.
Remove the blower motor and wheel from the heater case.
Remove the blower wheel hub clamp spring and the tab lock washer from the motor shaft. Then, pull the blower wheel from the motor shaft.
To install:
Install the blower wheel on the blower motor shaft.
Install the hub clamp spring on the blower hub.
Position the blower motor and wheel to the heater case, and install the four (4) attaching screws.
Fig. 16: Heater case and plenum assemblies, 1980 and later standard and high output units without A/C
http://arrc.ebscohost.com/statics/p5/images/sm/isbn_graphics_complete/8576/chiltonimages/8576/85766016.gif
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