The defect
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 remedy
THE DEALER WILL REPLACE THE PULSE AIR SYSTEM REED VALVE AND SILENCER WITHOUT CHARGE.
NHTSA's own wording · initiated by ODI
Vehicles covered
| Model | Model years |
|---|
Components: ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CRANKCASE (PCV)
Other engine and engine cooling recalls in 1978
17 of the 272 recall campaigns reported to NHTSA in 1978 concerned the engine and engine cooling; FORD MOTOR COMPANY filed 963 campaigns in all.
| 78V259000 1 Dec 1978 | AMERICAN HONDA MOTOR CO. |
| 78V245000 7 Nov 1978 | GENERAL MOTORS CORP. |
| 78V226000 17 Oct 1978 | FORD MOTOR COMPANY |
| 78V213000 4 Oct 1978 | FORD MOTOR COMPANY |
| 78V211000 4 Oct 1978 | FORD MOTOR COMPANY |
| 78V208000 26 Sept 1978 | SAAB CARS USA, INC. |
| 78V200000 13 Sept 1978 | TOYOTA MOTOR CO., LTD. |
| 78V196000 11 Sept 1978 | JAGUAR CARS |
NHTSA recalls (public domain) · all recalls of 1978