1993 Volkswagen Corrado engine problems

Defect

VEHICLE DESCRIPTION: PASSENGER VEHICLES EQUIPPED WITH VR6 ENGINES. A COOLANT SYSTEM COMPONENT SUCH AS THE THERMO SWITCH, RADIATOR FAN, OR WATER PUMP, CAN MALFUNCTION CAUSING THE COOLANT TEMPERATURE AND COOLANT SYSTEM PRESSURE TO INCREASE SIGNIFICANTLY. OVER TIME, EXCESSIVE PRESSURE CAN CAUSE LEAKAGE OF COOLANT FROMTHE SYSTEM, INCLUDING LEAKAGE FROM THE HEAT EXCHANGER.

Consequence

LEAKAGE OF HOT COOLANT FROM THE HEAT EXCHANGER CAN CAUSE INJURY TO THE FEET OF THE DRIVER OR STEAM UP THE INTERIOR OF THE VEHICLE TEMPORARILY IMPAIRING THE DRIVER'S VISION.

Remedy

DEALERS WILL INSTALL IN THE COOLANT INLET HOSE TO THE HEATER CORE, A PRESSURE REDUCER WITH A 5MM DIAMETER SECURED BY A SPRING TENSIONED HOSE CLAMP. ALSO A NEW RELAY THAT WILL CHANGE THE OPERATION OF THE SECONDARY ELECTRICAL COOLANT PUMP WILL BE INSTALLED. DEALERS WILL ALSO PERFORM A FUNCTIONAL CHECK OF THE COOLING SYSTEM TO MAKE SURE THAT ALL COOLING SYSTEM COMPONENTS OPERATE PROPERLY.

Defect

IMPROPER MATERIAL WAS USED IN MANUFACTURING THE RADIATOR FAN MOTOR SHAFT CAUSING THE SHAFT TO WEAR AND BECOME NOISY.

Consequence

A WORN AND NOISY FAN MOTOR SHAFT CAN SEIZE RENDERINGTHE FAN MOTOR INOPERATIVE, EVENTUALLY CAUSING THE ENGINE TO OVERHEAT AND STALL. A STALLED VEHICLE IN TRAFFIC CAN INCREASE THE POTENTIAL FOR A VEHICLE ACCIDENT.

Remedy

DEALERS WILL REPLACE THE COMPLETE COOLING FAN ASSEMBLY ON VEHICLE HAVING THE POTENTIAL SHAFT MATERIAL PROBLEM. DEALERS WILL INSTALL A NEW FAN BLADE INCLUDING A NEW LOCK NUT ON VEHICLE WITH LOOSE FAN BLADE LOCK NUTS.