Standard Ignition Engine Cooling Fan Switch P/N:TS-187
Standard Motor Products
Keep your electric cooling fan responding to engine temperature with the Standard Ignition Engine Cooling Fan Switch TS-258. This coolant fan switch is designed to make electrical contact at its specified temperature, which signals the cooling fan to turn on. It fits many vehicles, among them the 1987-1990 Jeep Cherokee, 1990-1991 Dodge Monaco and 1987-1990 Jeep Comanche, as a direct-fit replacement for the listed applications. See the "Vehicles it fits" section for the full list.
Shopping for a 1987-1990 Jeep Cherokee switch for the cooling fan? A worn fan switch may need replacing if the fan doesn't come on, runs constantly, or the engine runs hot at idle. These symptoms can have other causes, so check the fan circuit first. If a failed switch is the cause, the TS-258 replaces it.
Interchange: 8932001846 · TFS522 · 32001846 · SW594 · FS166
This part cross-references / interchanges with the following part numbers:
I need a 1990-1991 Dodge Monaco switch for the cooling fan. Does the TS-258 fit?
Yes, it's listed for the 1990-1991 Dodge Monaco. Check the "Vehicles it fits" section to confirm the match for your vehicle.
What does an engine cooling fan switch do?
It senses coolant temperature and makes electrical contact at its specified set point, which signals the electric cooling fan to switch on.
How is the TS-258 calibrated?
Standard Ignition factory-calibrates each unit to make electrical contact at its specified lower-temperature set point. Each unit is then tested to confirm the switch actuates at that temperature.
What are signs the cooling fan switch may need replacing?
Common signs are a cooling fan that won't come on, a fan that runs constantly, or overheating at idle. Other faults cause these too, so diagnose the fan circuit before replacing the switch.
How is the TS-258 installed?
Follow your vehicle's service procedure. The switch senses coolant, so some coolant may need to be drained first. Top off the system and check for leaks afterward.
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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.