Keep your engine's cooling fan cycling on cue with the Standard Ignition switch TS-179, a coolant fan switch built as a direct-fit replacement for the 1987-1988 Chevrolet Sprint, 1987-1988 Pontiac Firefly, and 1987-1988 Suzuki Forsa. It senses coolant temperature and makes the electrical contact that signals the fan controller, helping the cooling fan turn on at the correct point.
How it works: A custom wax formulation expands as it heats and drives a snap-action electrical contact, transferring the signal to the fan controller.
If a failed coolant fan switch is the cause of a fan that won't run or an engine that runs hot, this switch replaces it. Diagnose the cause before replacing.
Interchange: 89057820 · TFS9 · SW562 · FS114 · 96055554 · 1768082001
This part cross-references / interchanges with the following part numbers:
What does the Standard Ignition TS-179 do?
It's a coolant fan switch that senses coolant temperature and makes an electrical contact to signal the fan controller, helping the cooling fan turn on at the specified set point.
What vehicles does the TS-179 fit?
It's a direct-fit replacement for the 1987-1988 Chevrolet Sprint, 1987-1988 Pontiac Firefly, and 1987-1988 Suzuki Forsa. Check the "Vehicles it fits" section to confirm your vehicle.
How is the switch calibrated?
Wax pellets are custom formed for the specified temperature range, and every unit is factory-calibrated and tested to confirm it actuates at its specified lower-temperature set point.
What are signs this switch may need replacing?
A cooling fan that won't run or an engine that runs hot can be signs. These symptoms have other possible causes, so diagnose the fault before replacing the switch.
How does the contact mechanism work?
A custom wax formulation expands when heated to drive a snap-action contact, and a formed bimetallic arm uses two fused metals' differing expansion rates for precise creep-action movement.
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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.
