Standard Ignition Engine Cooling Fan Switch P/N:TS-187
Help your electric cooling fan come on when the engine needs it with the Standard Ignition Engine Cooling Fan Switch TS-378. It is a direct-fit replacement for many vehicles, among them the 1994-1999 Toyota Corolla, 1998-2000 Chevrolet Prizm and 1993-1999 Toyota Paseo. See the "Vehicles it fits" section for the full list and engine-specific fitment.
Standard Ignition lists this part as a coolant fan switch. It is a thermal switch that responds to coolant temperature and passes an electrical signal to the fan circuit.
Signs this part may need replacing include a cooling fan that does not come on as the engine warms up, a fan that runs all the time, or a temperature gauge that climbs in stop-and-go traffic. Other cooling-system faults can cause the same symptoms, so diagnose the cause first. If a failed fan switch is the cause, TS-378 replaces it.
Interchange: 17-1048
171048 · TFS23 · 8553 · SW653 · FS122 · 94853091 · 94853092 · 8942812150 · 8942812160
This part cross-references / interchanges with the following part numbers:
What does the Standard Ignition TS-378 cooling fan switch do?
It is a thermal switch that responds to coolant temperature. It makes electrical contact at its specified set point and sends a signal to the cooling fan circuit.
Which vehicles does TS-378 fit?
It fits many vehicles, among them the 1994-1999 Toyota Corolla, 1998-2000 Chevrolet Prizm and 1993-1999 Toyota Paseo. See the "Vehicles it fits" section for the full list and engine details.
Is the switch calibrated before it ships?
Yes. Standard Ignition factory-calibrates each thermal switch to make electrical contact at its specified temperature set point, and all units are tested to confirm actuation.
What are signs a cooling fan switch may need replacing?
Possible signs include a fan that won't come on as the engine warms, a fan that runs constantly, or rising temperature in traffic. Other parts can cause these symptoms too, so diagnose before replacing.
Which part numbers does TS-378 interchange with?
It crosses to 17-1048 (171048), TFS23, 8553, SW653, FS122, 94853091, 94853092, 8942812150 and 8942812160.
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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.