C 2500 3/4 Ton Pickup 2WD L6-250 4.1L VIN D 2-bbl (1984)
Thermostatic Air Cleaner: Testing and Inspection
Fig. 83 TAC air door operation. Engine off
Fig. 84 TAC operation. Engine running, temperature below 85 F
Fig. 85 TAC operation. Engine running, temperature above 128 F
FUNCTIONAL TESTING