Procedure:
1. Put on rubber gloves and safety goggles.2. Pour the small bottle of Goodwrench air conditioning system disinfectant kit, part number 25533404, into the large bottle. Seal and invert the large container once or twice to mix contents.
3. Raise vehicle and remove drain grommet on vehicles equipped with a sound barrier on the heater/evaporator module.
4. Lower vehicle.
5. Connect battery charger and charge during cleaning to avoid draining the battery.
6. Remove power module/resistor block as described in the appropriate service information manual. Leaving wiring connectors attached to gain access to the evaporator core face closest to the blower motor.
CAUTION: Power module/resistor block heat sink may be hot.
NOTICE: Do not allow the metal heat sink of the power module or the metal coils of the blower resistor to become grounded to any metal surface as this may result in internal circuitry damage.
Figure 1 - Sealing Air Inlet Screen:
7. Check heater/evaporator case for debris. Remove any debris present through the power module/resistor block opening. If debris is imbedded into the evaporator core face and cannot be removed, the core will have to be removed from the vehicle and cleaned off car. If a large amount of debris is present in the heater/evaporator case, the air inlet screen will require sealing around the windshield wiper post holes and fender edges as shown in Figure 1.
8. Command the air mix valve (door) to the maximum cold position and the blower to low speed by:
On FWD Electra and LeSabres - turning the ignition to the on position without starting the engine and setting the electronic climate control to Econ, 60~F temperature and low blower.
On Skyhawks and Skylarks, move the temperature door control lever to the maximum cold position, blower on low and turn the ignition on.
On Rivieras and Reattas - turning the ignition to the on position without starting the engine and selecting front defrost to disable the cold purge routine then setting the climate control panel of the CRT to Econ, 60~F temperature and low blower.
9. Open all windows and doors. Exit vehicle.
10. Place drain pan with at least a two quart capacity below heater/evaporator drain hole to catch disinfectant and rinse water runoff.
FIGURE 2:
11. Position pedestal fan as shown in Figure 2 and turn on high to provide cross ventilation during cleaning procedure.
12. Use Kent-Moore tool J-36645 or equivalent siphon-type parts cleaning spray gun capable of delivering two ounces per minute of liquid when driven with shop air at 80-90 psi. Insert the nozzle of the spray gun through the power module/resistor block opening and insert siphon hose into container of disinfectant. Take care to place the bottle of disinfectant in a secure, upright position to avoid spilling contents. Direct spray toward evaporator face, taking extra care to ensure adequate coverage of the corners and edges, completely saturating the entire core. Use the entire container of solution.
13. Reach into the vehicle and turn the ignition to the off position and allow the core to soak for five minutes.
14. Reach into and start the vehicle.
15. Thoroughly rinse the evaporator core with one quart of clean water using the spray gun to remove any disinfectant residue.
16. Reach into the vehicle and turn the ignition to the off position and then reinstall power module/resistor block.
CAUTION: Power module/resistor block heat sink may be hot.
17. Dispose of disinfectant and rinse water runoff collected in drain pan into a sanitary drain system.
18. Disconnect battery charger.
19. Remove close out panel(s), insulators, fuse block, trim plates, air conditioning control head and glove box as required to gain access to the circuits shown in the applicable wiring diagram. Refer to the appropriate service information manual for component location and service procedures.
Figure 3 - LaSabre and Electra Schematic:
Figure 4 - Riviera/Reatta:
FIGURE 5:
20. Splice clip and solder (see Section 8A, cell 5 of the appropriate service information manual for splicing instructions) the various leads to the afterblow module wiring harness with the circuits shown in corresponding wiring diagram on the following pages. Disconnect the wiring harness from the afterblow module then connect the black/white ground lead first before completing the remaining splices. Since a majority of the circuits to be spliced are low current circuits, care should be taken to assure that the splices are completed and soldered correctly. (Refer to Figures 3, 4 and 5.)
NOTICE: The afterblow module will enable the blower to run at high speed for five minutes approximately 50 minutes after the vehicle ignition is turned off if the compressor was engaged for greater than four minutes during the last ignition cycle.
To test the afterblow module after installation:
1. Start vehicle.
2. Turn A/C system on to engage compressor.
3. Connect jumper wire to apply battery voltage to open position pin H (green wire) of afterblow module for at least 30 seconds with the compressor engaged.
4. Turn vehicle ignition off.
5. Blower should come on after approximately 10 seconds for one second then go off.
6. Disconnect jumper wire from pin H (green wire).
Add foam insulation as necessary to ensure rattle-free installation of the afterblow module under dash or in the front console area.
NOTICE: The afterblow module is not compatible with some non-factory installed theft alarm systems. The module current draw at key off could trigger alarms that sense battery voltage changes or current drain.
For warranty purposes use Labor Operation T6235 for 1.9 hours on Electra/Park Avenue and Reatta/Riviera or 1.7 hours on Skyhawk and Skylark vehicles. If debris needs to be removed from the heater/evaporator case and the air inlet screen needs to sealed, use an add time of .2 hour.