Merkur Xr4ti L4-140 2.3L SOHC Turbo (1985)
Throttle Body: Description and Operation
The throttle body assembly controls air flow to the engine through a single butterfly type valve. The throttle position is controlled by multiple-link,
progressive opening throttle linkage. The body is a single piece die casting made of aluminum that has a single bore with an air bypass channel around
the throttle plate. This bypass channel controls both warm and cold engine idle air flow as regulated by an air bypass valve assembly mounted directly on
the throttle body. The valve assembly is an electromechanical device controlled by the EEC computer. It incorporates a linear actuator which positions a
variable area metering vane.
The air throttle body assembly also includes an adjustment screw to set the throttle plate at minimum idle air flow position, a preset stop to locate the
WOT position and a throttle body mounted throttle position sensor.