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NHTSA Campaign 91V225000

ENGINE AND ENGINE COOLING:EXHAUST SYSTEM

Issued by HYUNDAI MOTOR AMERICA · Reported Dec 31, 1991 · 895,000 vehicles affected

What's wrong

DETERIORATION OF THE REED VALVE SUBASSEMBLY MAY LEAD TO A MALFUNCTION WITHIN THE SECONDARY AIR SUPPLY PORTION OF THE EMISSION CONTROL SYSTEM. THE SCREWS WHICH ATTACH THE REEDS TO THE REED VALVE SUBASSEMBLY MAY RUST, AND IF THE RUSTING BECOMES SEVERE, THE SCREW HEADS WILL ERODE AND ALLOW THE REEDS TO SEPARATE FROM THE REED VALVE SUBASSEMBLY. CORROSION MAY ALSO OCCUR ON THE REED VALVE SUBASSEMBLY, DEFORMING THE REED SEATS AND PREVENTING THE REEDS FROM CLOSING PROPERLY. SEPARATION OF THE REEDS FROM THE REED VALVE SUBASSEMBLY OR IMPROPER CLOSING OF THE REEDS ALLOW HOT EXHAUST GASES TO FLOW BACKWARD INTO THE PLASTIC SECONDARY AIR FILTER CASE WHEN THE VEHICLE IS BEING DRIVEN. THESE HOT EXHAUST GASES MAY MELT THE SECONDARY PLASTIC AIR FILTER CASE.

Consequence

THE MELTING PLASTIC AIR FILTER CASE MAY LEAD TO A FIREIN THE ENGINE COMPARTMENT.

Remedy

REPLACE THE REED VALVE SUBASSEMBLY WITH ONE WHOSE METAL COMPONENTS ARE FABRICATED FROM CORROSION RESISTANT STAINLESS STEEL.

Vehicles affected by this recall

Make Model Year Units
HYUNDAI EXCEL 1986 895,000
HYUNDAI EXCEL 1987 895,000
HYUNDAI EXCEL 1988 895,000
HYUNDAI EXCEL 1989 895,000
MITSUBISHI PRECIS 1987 895,000
MITSUBISHI PRECIS 1988 895,000
MITSUBISHI PRECIS 1989 895,000

Source: NHTSA Campaign 91V225000 on nhtsa.gov. To check the current repair status for a specific vehicle, use our free VIN decoder.