W 100 Pickup L6-225 3.7L (1984)
Charge Temperature Sensor: Description and Operation
Fig. 13 Charge temperature switch location. In-Line 6 cylinder engine
The CTS, Fig. 13, is used on six cylinder engines and is located in the intake manifold No. 6 branch runner on six cylinder engines. When the
incoming air fuel mixture is below 60° F., the CTS will close, allowing no EGR timer function, no EGR valve operation. When incoming air-fuel
mixture is above 60° F., the CTS will open allowing EGR timer to expire, and the EGR valve to operate.
