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NHTSA Recall 78V203000: Crankcase (pcv) (engine and engine cooling)

FORD MOTOR COMPANY reported this safety recall to NHTSA on , covering an estimated 218,500 vehicles. It affects 2 models including the Ford Fairmont.

218,500
vehicles potentially affected
2
models affected
1978
owners notified (November 17)
NHTSA campaign78V203000
ComponentENGINE AND ENGINE COOLING › EXHAUST SYSTEM › EMISSION CONTROL › CRANKCASE (PCV)
Report receivedSeptember 21, 1978
Owner notificationNovember 17, 1978
Initiated byNHTSA Office of Defects Investigation

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.

Safety risk

Not provided.

Remedy

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.

Vehicles covered by recall 78V203000

Make and modelModel years
Ford Fairmont1978
Mercury Zephyr1978

Being listed here means the campaign covers the model year, not that every car was built with the defect or is still unrepaired. Enter your VIN above to check your specific vehicle. Recall repairs are free at authorised dealers. Source: NHTSA, October 2026.