Standard Ignition Engine Cooling Fan Switch P/N:TS-454
Help your cooling fan come on as the engine warms up with the Standard Ignition TS-157 Engine Cooling Fan Switch, a replacement Excel switch for the 1986-1989 Hyundai Excel that also fits the 1987-1989 Mitsubishi Precis.
Standard Ignition lists this part as a coolant fan switch. It is a thermal switch that makes electrical contact when coolant reaches its specified set point, then passes that electrical signal on to the fan controller.
Signs this switch may need replacing: The cooling fan stays off as the engine warms, the temperature gauge climbs in slow traffic, or the fan runs all the time. Wiring, relays or the fan motor can cause the same signs, so diagnose the fan circuit before you replace the switch.
See the "Vehicles it fits" section for engine details.
What does the Standard Ignition switch TS-157 do?
It is an engine cooling fan switch. It makes electrical contact when coolant reaches its specified set point and sends that signal to the fan controller.
Which vehicles does the TS-157 fit?
It is listed for the 1986-1989 Hyundai Excel and the 1987-1989 Mitsubishi Precis. See the "Vehicles it fits" section for engine details.
What are signs of a failing cooling fan switch?
Signs include a fan that won't come on as the engine warms, overheating in slow traffic, or a fan that runs constantly. Wiring or relays can cause the same signs, so test the circuit first.
Is the switch calibrated before it ships?
Yes. Each unit is factory-calibrated to make contact at its specified lower-temperature set point and is tested to confirm it actuates at that temperature.
Is the TS-157 also called a coolant fan switch?
Yes. Standard Ignition describes it as a coolant fan switch, and it is listed here as an engine cooling fan switch. The part number may also be written TS157.
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WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.