Ford Thunderbird/Cougar 1983-1997 Repair Guide

Air Vane Meter



The air vane meter assembly is located between the air cleaner and the throttle body on the 4-2.3L engine, and is mounted on a bracket near the left shock tower. The vane air meter contains two sensors which furnish input to the Electronic Control Assembly: a vane airflow sensor and a vane air temperature. The air vane meter measures the mass of air flow to the engine. Air flow through the body moves a vane mounted on a pivot pin. This vane is connected to a variable resistor (potentiometer) which in turn is connected to a 5 volt reference voltage. The output of this potentiometer varies depending on the volume of air flowing through the sensor. The temperature sensor in the air vane meter measures the incoming air temperature. These two inputs, air volume and temperature, are used by the Electronic Control Assembly to compute the mass air flow. This valve is then used to compute the fuel flow necessary for the optimum air/fuel ratio which is fed to the injectors.

2.3L Engine
  1. Loosen the hose clamp which secures engine air cleaner outlet hose to the vane meter assembly.
  3. Remove air intake and outlet tube from the air cleaner.
  5. Disengage four spring clamps and remove air cleaner front cover and air cleaner filter panel.
  7. Remove the two screw and washer assemblies which secure the air meter to its bracket. Remove the vane air meter assembly.
  9. Installation is the reverse of removal.