90 Quattro 20V (Canada) L5-2309cc 2.3L DOHC (7A) (1989)
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17.
IDLE SWITCH AND THROTTLE VALVE POTENTIOMETER: Located on the throttle valve assembly at the rear of the intake manifold
common chamber, right side.
COMPONENTS NOT IDENTIFIED IN DIAGRAM
EGR FREQUENCY VALVE:
Located on the engine side of air filter housing, near the air mass sensor.
EGR TEMPERATURE SENSOR:
Located on the EGR valve body (bolted to the underside of the intake manifold common chamber).
OXYGEN SENSOR:
Located on the exhaust header pipe just behind the exhaust flange at the rear of the exhaust manifold.
