The defect
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.
The risk
THE MELTING PLASTIC AIR FILTER CASE MAY LEAD TO A FIREIN THE ENGINE COMPARTMENT.
The remedy
REPLACE THE REED VALVE SUBASSEMBLY WITH ONE WHOSE METAL COMPONENTS ARE FABRICATED FROM CORROSION RESISTANT STAINLESS STEEL.
NHTSA's own wording · initiated by ODI
Vehicles covered
| Model | Model years |
|---|---|
| Hyundai Excel | 1986, 1987, 1988, 1989 |
| Mitsubishi Precis | 1987, 1988, 1989 |
Components: ENGINE AND ENGINE COOLING:EXHAUST SYSTEM
Model years in this recall
NHTSA complaints and the number of recall campaigns for each model year this recall covers.
| Model | Year | Complaints | Recalls |
|---|---|---|---|
| Hyundai Excel | 1986 | 13 | 5 |
| Hyundai Excel | 1987 | 13 | 4 |
| Hyundai Excel | 1988 | 43 | 4 |
| Hyundai Excel | 1989 | 68 | 4 |
| Mitsubishi Precis | 1987 | 1 | 2 |
| Mitsubishi Precis | 1988 | 3 | 3 |
| Mitsubishi Precis | 1989 | 5 | 3 |
Other engine and engine cooling recalls in 1991
4 of the 220 recall campaigns reported to NHTSA in 1991 concerned the engine and engine cooling; HYUNDAI MOTOR AMERICA filed 20 campaigns in all.
| 91V211000 27 Dec 1991 | NISSAN NORTH AMERICA, INC. |
| 91V192000 5 Nov 1991 | FREIGHTLINER CORPORATION |
| 91V066000 18 Apr 1991 | PACCAR, INCORPORATED |
NHTSA recalls (public domain) · all recalls of 1991