Cougar/XR7 V8-4.6L VIN W (1997)
Throttle Body: Description and Operation
PURPOSE
The throttle body provides control of engine air flow.
OPERATION
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A cam lever and accelerator cable rotates the throttle shaft from idle to Wide Open Throttle (WOT) position.
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The plate position at idle is factory set by the lever contacting a throttle return control screw. The head of the screw is removed to make the idle
plate set permanent. DO NOT attempt to adjust idle/minimum plate setting with the throttle return control screw.
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The throttle body airflow is factory set by the idle air adjust needle (trim screw) within the throttle body casting. DO NOT attempt to adjust.
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Throttle body idle airflow provides minimum engine airflow while the Idle Air Control (IAC) valve provides supplemental engine airflow to
maintain the desired engine idle speed.
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The WOT plate position which is obtained when the lever contacts the throttle body casting.
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The Throttle Position (TP) which provides an electrical signal which is used as an input to the Powertrain Control Module (PCM).
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The throttle body has a sealant which is applied to the downstream side of the throttle body plate and bore to reduce plate-to-bore leakage.
Cleaning may remove sealant. It should NOT be cleaned.
