1978 MERCURY ZEPHYR RECALL - #78V203000
RECALL FOR ENGINE AND ENGINE COOLING : EXHAUST SYSTEM : EMISSION CONTROL : CRANKCASE (PCV)
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.
Information provided by the
National Highway Traffic Safety Administration.
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Recall Details
| Vehicle |
1978 MERCURY ZEPHYR |
|
| Manufacturer |
FORD MOTOR COMPANY |
| Manufactured between |
8/1/1977 - 4/1/1978 |
| Recalled on |
10/12/1979 |
| Influenced by |
OFFICE OF DEFECTS INVESTIGATION |
| Owners Notified on |
11/17/1978 |
| # Affected |
218,500 |
| Recalled for |
ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CRANKCASE (PCV) |
|
|
| 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. |
| Consequences |
|
| 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. |
| See also |
1978 MERCURY ZEPHYR Recall for SERVICE BRAKES, HYDRAULIC, FOUNDATION COMPONENTS, DISC, ROTOR
1978 MERCURY ZEPHYR Recall for SUSPENSION, REAR
1978 MERCURY ZEPHYR Recall for SERVICE BRAKES, HYDRAULIC
1978 MERCURY ZEPHYR Recall for POWER TRAIN, AUTOMATIC TRANSMISSION, LEVER AND LINKAGE, COLUMN SHIFT
1978 MERCURY ZEPHYR Recall for EQUIPMENT, APPLIANCE, AIR CONDITIONER
1978 MERCURY ZEPHYR Recall for ELECTRICAL SYSTEM, WIRING, INTERIOR/UNDER DASH
1978 MERCURY ZEPHYR Recall for POWER TRAIN, AUTOMATIC TRANSMISSION, LEVER AND LINKAGE, COLUMN SHIFT
1978 MERCURY ZEPHYR Recall for FUEL SYSTEM, GASOLINE, DELIVERY, HOSES, LINES/PIPING, AND FITTINGS
1978 MERCURY ZEPHYR Recall for VISIBILITY, WINDSHIELD WIPER/WASHER, LINKAGES
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