W350 1 Ton Pickup 4WD V8-360 5.9L VIN U 4-bbl (1982)
Choke Temperature Control Switch: Description and Operation
Fig.25 Choke Control Switch
The electric assist choke used on 1978-82 vehicles will provide a more rapid choke opening at temperatures above approximately 60° F, and a slower
choke opening below 60 ° F A wire from the choke heater is connected to an electrical control switch.
NOTE: On 1979-82 vehicles, an oil pressure switch is connected in series with the control switch to prevent early choke opening. As oil pressure
increases, the choke control receives current.
At 60° F and above, the choke heater is energized by the control switch.
Since the heater control switch is mounted on the engine, some cold weather operation may energize the choke heater. This could happen after the
choke has opened without benefit of electric heat. This condition will have no adverse effect on engine operation, and will soon be turned off.
NOTE: The heating element should not be exposed to, or immersed in, any fluid for any reason. An electric short in the wiring to the heater or within
the heater will be a short in the ignition system.
