Catalytic Converter
WARNING: This page does not describe the selected car, but rather 20 other vehicles, including the 1987 GMC Pickup, 1987 GMC Cab & Chassis, 1987 Chevrolet Pickup, 1987 Chevrolet Cab & Chassis, and 1986 GMC Pickup. However, it is still accessible from the selected car via links, so may be relevant.
To prevent catalytic converter overheating, DO NOT allow engine to idle for more than 20 minutes.