1989 Hyundai Excel — Problems, Recalls & Complaints

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.

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

IF CRUISE CONTROL MAIN SWITCH IS IN THE ON POSITION WHEN ENGINE IS STARTED, SYSTEM CAN BE AFFECTED BY A SHORT DURATION VOLTAGE DROP CAUSED BY OPTIONAL HI-POWER (H340) RADIO.

Remedy: REPLACE ELECTRONIC CONTROL MODULE.

THE MANUAL TRANSMISSIONS MAY LOCK UP FROM INSUFFICIENT LUBRICATION OF THE GEARS IN THE TRANSMISSION CASE. THIS CAN CAUSE THE DRIVE WHEELS TO SEIZE AND THE VEHICLE TO COME TO A SUDDEN STOP.

Remedy: HYUNDAI WILL PERFORM A COST FREE TRANSMISSION OIL CHANGE.

THE HEATER CONTROL VALVE STEM DOES NOT MEET THE MATERIAL SPECIFICATIONS. HIGH COOLANT TEMPERATURES CAN CAUSE THE STEM TO LEAK.

Remedy: DEALERS WILL INSPECT AND REPLACE DEFECTIVE VALVE STEMS.