THE INVOLVED VEHICLES CONTAIN EMISSION CONTROL SYSTEMS THAT UTILIZE A PULSE AIR REED VALVE TO PERMIT
— Recall Campaign #78V203000
THE INVOLVED VEHICLES CONTAIN EMISSION CONTROL SYSTEMS THAT UTILIZE A PULSE AIR REED VALVE TO PERMIT AIR FLOW FROM THE AIR CLEANER TO THE EXHAUST MANIFOLD ON NEGATIVE PRESSURE PULSATIONS. THESE REED VALVES MAY FAIL UNDER COLD WEATHER CONDITIONS, CAUSING A BACKFLOW OF EXHAUST GAS INTO THE AIR CLEANER AND FUEL INDUCTION SYSTEM ON POSITIVE EXHAUST PULSES. THIS CAUSES AN OVERLY RICH AIR/FUEL MIXTURE, REDUCED FUEL ECONOMY AND REDUCED ENGINE PERFORMANCE. CONTINUED VEHICLE OPERATION MAY RESULT IN ENGINE STALLING OR OVERHEATING OF THE EXHAUST SYSTEM.
The recall was influenced by the Office of Defects Investigation with about 218,500 units affected.
NHTSA Safety Recall Notice
78V203000
| Manufacturer: | Ford Motor Company |
|---|---|
| Recall date: | September 21, 1978 |
| NHTSA Campaign #: | 78V203000 |
| Units affected: | 218,500 |
- Description:
- THE INVOLVED VEHICLES CONTAIN EMISSION CONTROL SYSTEMS THAT UTILIZE A PULSE AIR REED VALVE TO PERMIT AIR FLOW FROM THE AIR CLEANER TO THE EXHAUST MANIFOLD ON NEGATIVE PRESSURE PULSATIONS. THESE REED VALVES MAY FAIL UNDER COLD WEATHER CONDITIONS, CAUSING A BACKFLOW OF EXHAUST GAS INTO THE AIR CLEANER AND FUEL INDUCTION SYSTEM ON POSITIVE EXHAUST PULSES. THIS CAUSES AN OVERLY RICH AIR/FUEL MIXTURE, REDUCED FUEL ECONOMY AND REDUCED ENGINE PERFORMANCE. CONTINUED VEHICLE OPERATION MAY RESULT IN ENGINE STALLING OR OVERHEATING OF THE EXHAUST SYSTEM.
- Consequeces:
- Corrective action:
- THE DEALER WILL REPLACE THE PULSE AIR SYSTEM REED VALVE AND SILENCER WITHOUT CHARGE.
- Notes:
- VEHICLE DESCRIPTION: PASSENGER VEHICLES EQUIPPED WITH 200 CID ENGINES,AUTOMATIC TRANSMISSIONS AND THERMACTOR PULSE AIR SUPPLY SYSTEMS.SYSTEM: EXHAUST; EMISSIONS SYSTEM.CONSEQUENCES OF DEFECT: OVERHEATING OF THE EXHAUST SYSTEM MAY LEAD TO SCORCHEDREAR SEATS AND CARPETS AND ASSOCIATED FUMES. ENGINE STALLING WOULD POSE ASAFETY HAZARD IN TRAFFIC, WHICH COULD LEAD TO A VEHICLE ACCIDENT.