A/C Time Delay Relay
WARNING: This page does not describe the selected car, but rather 38 other vehicles, including the 1987 Pontiac Sunbird, 1987 Pontiac Safari, 1987 Pontiac Grand Prix, 1987 Pontiac Grand Am, and 1987 Pontiac Firebird. However, it is still accessible from the selected car via links, so may be relevant.
This relay prevents the compressor from operating for 10 seconds after the engine is started or A/C mode is selected.
If system is operating, current is applied to idle stop solenoid of automatic transmission models to increase engine idle speed. It also stops the compressor if engine temperature light comes on due to overheating.