Blower motor case

( heater core) disconnect the cable from negative battery terminal, from engine compartment disconnect the temperature control cable from the temperature blend door and the mounting bracket from the top of the heater case. Disconnect wires from blower motor resistor and the blower motor. Drain the coolant from the radiator into some type of container. Disconnect the heater hoses from the heater core tubes on the engine side of the firewall. Now working in the passenger compartment, remove the nuts retaining the left end of the heater case and the right end of the plenum to the dash panel. Working in the engine compartment, remove the screw retaining the top center of the heater case to the dash panel. Remove the screws retaining the right end of the heater case to the dash panel and remove the heater case assembly from the car. Remove the screws, nuts and bolts retaining the heater housing plate to the heater case, then remove the heater housing plate. If so equipped, remove the screws attaching the heater core frame to the heater case and remove the frame. Remove the heater core and seal from the heater case.

Would be somewhere on the heater case, usually under dash, but some trucks have them in engine compartment on the heater case along the passenger firewall. 3 or 4 wires that go into a connector right on your heater case.

Behind the glove box. Please see my tip at http://www.fixya.com/cars/r6234839-doesn_t_heater_or_air_conditioner_blow . These are generic instructions. If you get stuck, please get back to me.

See instructions from autozone.com below.

REMOVAL & INSTALLATION

With Air Conditioning
See Figures 1, 2 and 3

1. Disconnect the negative battery cable.
2. Remove the glove compartment door and glove compartment.
3. Disconnect the blower motor wires from the blower motor resistor.

Fig. Fig. 1: Disconnect the blower motor wires from the blower motor resistor-1988 Escort

1. Loosen the instrument panel at the lower right-hand side prior to removing the motor through the glove compartment opening.
2. Remove the blower motor and mounting plate from the evaporator case.
3. Rotate the motor until the mounting plate flat clears the edge of the glove compartment opening and remove the motor.
4. Remove the hub clamp spring from the blower wheel hub. Then remove the blower wheel from the motor shaft.

Fig. Fig. 2: Unbolt the mounting plate from the case

Fig. Fig. 3: The motor can now be removed from the case

To install:

1. If removed, assemble the blower wheel to the motor shaft and install the hub clamp.
2. Install the motor and blower wheel assembly.
3. Secure the instrument panel at the lower right-hand side.
4. Connect the blower motor wires at the blower motor resistor.
5. Install the glove compartment door and the glove compartment.
6. Connect the negative battery cable.
7. Check the system for proper operation.

Without Air Conditioning

1. Disconnect the negative battery cable.
2. Remove the air inlet duct assembly.
3. Remove the hub clamp spring from the blower wheel hub. Pull the blower wheel from the blower motor shaft.
4. Remove the blower motor flange attaching screws located inside the blower housing.
5. Pull the blower motor out from the blower housing (heater case) and disconnect the blower motor wires from the motor.

To install:

1. Connect the wires to the blower motor and position the motor in the blower housing.
2. Install the blower motor attaching screws.
3. Position the blower wheel on the motor shaft and install the hub clamp spring.
4. Install the air inlet duct assembly and the right ventilator assembly.
5. Connect negative battery cable.
6. Check the system for proper operation.

in the cab, but procedures are different depending on whether or not you have A/C. See below

1980-81 Comfort Vent Heaters, Without Air Conditioning

1. Disconnect the heater hoses from the heater core tubes and plug the hoses with suitable 5 / 8 inch; (16mm) plugs.
2. Remove the glove compartment liner.
3. Remove two (2) spring clips attaching the heater core cover to the plenum along the top edge of the heater core cover.
4. Remove eight (8) screws attaching the heater core cover to the plenum and remove the cover.
5. Remove the heater core from the plenum taking care not to spill coolant from the core.

To install:

1. Install the heater core in the plenum.
2. Install the heater core cover (eight (8) screws and two (2) spring clips along the top edge of the cover).
3. Install the glove compartment liner.
4. Connect the heater hoses to the heater core. Tighten the hose clamps.
5. Add coolant to raise the coolant level to specification.
6. Check the system for proper operation and for coolant leaks.

1980-81 Standard & High Output Heaters, Without Air Conditioning

1. Disconnect the temperature cable from the temperature blend door and the mounting bracket on top of the heater case.
2. Disconnect the wires from the blower motor resistor and the blower motor.
3. Disconnect the heater hoses from the heater core and plug the hoses with suitable 5 / 8 inch; (16mm) plugs.
4. Working under the instrument panel, remove two (2) nuts retaining the left end of the heater case and the right end of the plenum to the dash panel.
5. In the engine compartment, remove one (1) screw attaching the top center of the heater case to the dash panel.
6. Remove two (2) screws attaching the right end of the heater case to the dash panel, and remove the heater case from the vehicle.
7. Remove nine (9) screws and one (1) bolt and nut attaching the heater housing plate to the heater case, and remove the heater housing plate.
8. Remove three (3) screws attaching the heater core frame to the heater case and remove the frame.
9. Remove the heater core and seal from the heater case.

To install:

1. Position the heater core and seal in the heater case.
2. Install the heater core frame (3 screws).
3. Position the heater housing plate on the heater case and install the nine (9) screws and one (1) bolt and nut.
4. Position the heater case to the dash panel and install the three (3) attaching screws.
5. Working in the passenger compartment, install two (2) nuts to retain the heater case and plenum right end to the dash panel.
6. Connect the heater hoses to the heater core. Tighten the hose clamps.
7. Connect the wires to the blower motor resistor assembly.
8. Connect the blower motor wires.
9. Position (slide) the self-adjusting clip on the temperature cable to a position approximately one 1 inch; (25.4mm) from the cable end loop.
10. Snap the temperature cable on the cable mounting bracket of the heater case. Then, position the self-adjusting clip on the door crank arm.
11. Adjust the temperature cable.
12. Check the system for proper operation.

Removal & Installation

1. Select the following settings:
   Turn the ignition ON Select Recirc in the OFF setting Turn the ignition OFF
   
2. Disconnect the negative battery cable.
3. Remove the wiper arm assemblies.
   CAUTION A sharp edge is revealed once the weatherstrip is removed.
4. Remove the weatherstrip at rear of the engine compartment.
5. Remove the cowl retaining nuts.
   
   
   

   Fig. Remove the cowl screen assembly
   

6. Remove the cowl screen assembly.
7. Rotate the locking tabs outward to release the filter assembly.
8. Remove the filter by lifting straight up.
   
   
   

   Fig. Remove the wiper module retaining bolts
   

9. Remove the wiper module retaining bolts.
10. Reposition the wiper module to the right.
11. Remove the filter housing attachment bolts.
12. Remove the filter housing.
13. Remove the blower motor housing:
14. Remove the blower motor housing screws
    
    
    

    Fig. Release the locking tabs and remove the fan housing
    

15. Release the locking tabs and remove the fan housing
16. Disconnect the blower motor electrical connector.
17. Squeeze the bottom of the connector and pull downward.
18. Remove the blower motor assembly by lifting straight out.

To install:

NOTE The fan motor assembly rib must be located into the channel in the module housing.

1. Install the blower motor assembly into the module housing.
2. Connect the blower motor electrical connector.
   NOTE The housing rib must fit into the slot in the HVAC module case.
3. Install the blower motor housing. Snap the left and right clip into place
4. Tighten the fan housing to blower motor housing screws to 9 inch lbs.(1 Nm).
   NOTE A new filter housing seal must be used whenever the filter housing is removed to prevent water from leaking into module.
5. Remove the filter housing seal using a small flat-blade screwdriver.
6. Install a new filter housing seal.
7. Install the filter housing.
8. Install the filter housing screws, and tighten the screws to 31 inch lbs.(3.5 Nm).
9. Position the wiper module.
10. Install the wiper module bolts, and tighten the bolts to 44 inch lbs.(5 Nm).
11. Install the passenger compartment air filter. Notice the air flow direction indicator printed on side of the filter.
12. Rotate the locking tabs on the filter housing inward to secure the air filter in place.
13. Install the cowl screen.
14. Install the cowl screen nuts, and tighten the nuts to 9 inch lbs.(1 Nm).
15. Close filter access door.
16. Install the weatherstrip at rear of the engine compartment.
17. Install the wiper arm assemblies.
18. Connect the negative battery cable.

1. Disconnect the blower motor electrical connector.
2. Remove the lower blower motor cover retaining screws.
   
   
   

   Fig. Remove the lower blower motor cover
   

3. Remove the lower blower motor cover.
4. Remove the blower motor nuts.
   NOTE Cut through the case as straight as possible because the motor cup must be replaced.
5. In order to prevent damage to the component, do not cut any deeper than necessary to remove the motor cup.
6. Remove the blower motor and cup from the lower case by cutting through the case between the circular ribs around the motor with a sharp utility knife.
7. Release the blower motor retaining tab and remove the motor from the cup.
   

To install:

1. Install the blower motor into the motor cup that was cut out of the lower case.
   
   
   

   Fig. Install the blower motor (1) into the motor cup (2) that was cut out of the lower case
   

2. Install the blower motor nuts, and tighten the nuts to 21 inch lbs.(2.4 Nm).
3. Attach the service ring to the motor cup with the screws included in the kit, and tighten the screws to 15 inch lbs.(1.8 Nm).
4. Install the blower motor and service ring into the HVAC module using the screws included in the kit. Make certain the blower motor electrical connector is pointing rearward in the vehicle, and tighten the screws to 15 inch lbs.(1.8 Nm).
5. Install the lower blower motor cover.
6. Install the lower blower motor cover retaining screws, and tighten the screws to 15 inch lbs.(1.8 Nm).
7. Connect the blower motor electrical connector.

Hope this helps (remember to rate and comment this).

The blower motor is located behind the firewall in the engine compartment.You can access it by removing the plastic cover above the firewall beneath the windshield.Remove the screws securing the firewall.You now have access to the blower motor but it has to be separated from the evaporator housing.The complete list of instruction are too many to list here.Go to the website SAABNET and do a search on the bulletin board New Generation 900 section and post your question.You can print the instructions out.

It is located in the blower housing right at the very back of the engine compartment below the center of the windshield. You must remove the top cover of the blower housing to get at it.

The blower motor is mounted in the engine compartment, behind the wiper linkage on this model



OR

Interior Mounted

1. Remove the right-side instrument panel insulator.
   
2. Disconnect the blower motor cooling hose.
   
3. Detach the blower motor electrical connector.
   
4. Remove the blower motor-to-air housing mounting screws.
   
5. Pull the blower motor out of the air housing.
   

The blower motor is located in the engine compartment on the right side of the firewall.

1. Disconnect the negative battery cable from the battery.
   
2. Disconnect the electrical connectors from the blower motor.
   
3. Remove the radiator coolant collecting bottle from the right side of the engine compartment.
   
4. Remove the windshield washer fluid bottle from the right side of the engine compartment.
   
5. If equipped with an acoustic cover over the motor, cut the cover between the clip lands and save the cover for reassembly.
   
6. Remove the blower motor-to-duct housing screws and the blower motor from the vehicle.
   
7. If necessary, replace the blower motor-to-duct housing gasket.
   
8. Installation is the reverse of the removal procedure. Tighten the retaining screws to 18 inch lbs. (1.6 Nm).

here is a step by step diagram to replace your heater core
Front

1. Disconnect the negative battery cable.
   
2. Drain the cooling system.
   
3. Remove the instrument panel glove compartment.
   
4. Tag and unplug all electrical leads as necessary.
   
5. Remove the center air distribution duct from the floor.
   
6. If necessary, remove the ECM and mounting tray.
   
7. Remove the hinge pillar trim panels.
   
8. Remove the blower motor cover and then remove the motor.
   
9. Remove the steering wheel and tilt back the instrument panel slightly.
   
10. Remove the coolant overflow tank. Disengage the heater hoses at the core connections.
    
11. Unfasten the attaching screws and nut and then remove the heater case.
    
12. Remove the seven screws and lift off the heater case cover.
    
13. Remove the fasteners and brackets that hold the heater core to the case and lift the core from the case.
    

To install:

1. Install the heater core in the case.
   
2. Install the heater case bottom plate. Make sure there is a good seal.
   
3. Install the heater case into the truck. Tighten the 4 lower screws to 17 inch lbs. (2 Nm); the upper screw to 97 inch lbs. (11 Nm); and the nuts to 25 inch lbs. (2.8 Nm).
   
4. Connect the heater hoses at the core tubes.
   
5. Install the coolant overflow tank.
   
6. Install the instrument panel and the steering wheel.
   
7. Install the blower motor and cover.
   
8. Install the trim panels and if removed, the ECM. Install the air distribution duct and reconnect all electrical leads.
   
9. Install the glove compartment. Fill the cooling system and connect the battery cable.
   

1. Disconnect the negative battery cable.
   
2. Drain the engine cooling system into a clean container for reuse.
   
3. Disconnect the heater hoses from the heater core.
   
4. Remove the instrument panel storage compartment.
   
5. Disconnect the electrical connectors, as necessary, that may be in the way.
   
6. Remove the center floor air distribution duct.
   
7. Remove the hinge pillar trim kick panels.
   
8. Remove the blower motor cover screws and the cover.
   
9. Remove the blower motor screws and the blower motor.
   
10. Remove the steering wheel and the steering column (standard & tilt).
    
11. Remove the instrument panel fasteners and pull the instrument panel back far enough to gain access to the heater assembly.
    
12. While holding the heater assembly against the firewall, remove the screw located on the interior side near the evaporator pipe, if equipped.
    
13. In the engine compartment, remove the 4 heater assembly-to-chassis screws and the 2 heater assembly-to-chassis nuts.
    
    NOTE Removal of the heater assembly may require the help of an assistant.
    
14. Remove the 7 heater cover-to-heater assembly screws and the cover.
    
15. Remove the heater core from the heater assembly.
    View of the front heater assembly—Chevy/GMC C/K-Series, Blazer, Jimmy, Sierra, Suburban, Tahoe, Yukon
    Click to Enlarge Location of the front heater assembly-to-chassis fasteners—Chevy/GMC C/K-Series, Blazer, Jimmy, Sierra, Suburban, Tahoe, Yukon
    Click to Enlarge

To install:

1. Install the heater core to the heater assembly.
   
2. Install the heater cover and the 7 heater cover-to-heater assembly screws.
   
   NOTE Installation of the heater assembly may require the help of an assistant.
   
3. In the engine compartment, install the 4 heater assembly-to-chassis screws and the 2 heater assembly-to-chassis nuts. Torque the screws to 17 inch lbs. (1.9 Nm) and the nuts to 25 inch lbs. (2.8 Nm).
   
4. While holding the heater assembly against the firewall, install the screw located on the interior side near the evaporator pipe, if equipped. Torque the screw to 97 inch lbs. (11 Nm).
   
5. Install the instrument panel and the instrument panel fasteners.
   
6. Install the steering column (standard & tilt) and the steering wheel.
   
7. Install the blower motor and the blower motor screws.
   
8. Install the blower motor the cover and the cover screws.
   
9. Install the hinge pillar trim kick panels.
   
10. Install the center floor air distribution duct.
    
11. Connect the electrical connectors that were disconnected.
    
12. Install the instrument panel storage compartment.
    
13. Disconnect the heater hoses to the heater core.
    
14. Refill the engine cooling system.
    
15. Connect the negative battery cable.
    
16. Run the engine to normal operating temperatures; then, check the climate control operation and check for leaks.