VEHICLE SPEED CONTROL
Defect
THE VENTURI TUBE LOCATED IN THE THROTTLE VALVE HOUSING CAN BECOME LOOSE AND FALL AGAINST THE THROTTLE PLATE.
Consequence
THE VENTURI TUBE CAN PARTIALLY BLOCK THE THROTTLE PLATEAND PREVENT IT FROM RETURNING TO ITS FULL IDLE POSITION, RESULTING IN UNWANTEDENGINE SPEED WHEN THE VEHICLE IS PLACED IN A FORWARD OR REVERSE GEAR.
Remedy
REPLACE THE PRESS-FIT VENTURI TUBE WITH A THREAD TYPE TUBE.
Notes
SYSTEM: FUEL: THROTTLE VALVE HOUSING.VEHICLE DESCRIPTION: PASSENGER CARS WITH 16 VALVE ENGINES AND CALIFORNIAEMISSION CONTROL SYSTEMS.