Cooling Fan Switch for 1988-1993 Pontiac LeMans - Standard Ignition TS-539

Help your electric cooling fan come on at the right coolant temperature with the Standard Ignition switch TS-539, an engine cooling fan switch calibrated to signal the fan circuit at its specified set point. It is a direct-fit replacement for the 1988-1993 Pontiac LeMans. See the "Vehicles it fits" section for engine details.

• Calibrated set point: Each thermal switch is factory-calibrated to make electrical contact at its specified lower-temperature set point. Every unit is tested to confirm it actuates at that temperature.
• Signal to the fan: When coolant reaches the set point, the switch makes its electrical contact and passes the signal on to the fan controller.
• In-house quality control: Standard Ignition is a global manufacturer of original equipment ignition products. It controls quality through the whole manufacturing process, from componentry to the finished product.
• Built for the pros: The switch uses a robust design and high-grade materials to handle the demanding needs of today's service professional.

A coolant fan switch senses engine coolant temperature and makes electrical contact at its set point, which signals the cooling fan to run. Signs this switch may need replacing include a cooling fan that never turns on as the engine warms up, a fan that runs constantly, or a temperature gauge that climbs at idle or in traffic. These symptoms can also come from the fan motor, relay, wiring or coolant level, so diagnose the cooling system before you replace the switch.

Interchange: TFS552 · SW2181 · FS203 · 2924434 · 9007800 · 9010836 · 9061416 · 9067765 · 9076143