Skylark L4-138 2.3L DOHC VIN D MFI QUAD 4 (1989)
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
