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Four Seasons 35936 Engine Cooling Fan Switch
| Brand | Four Seasons 35936 |
|---|---|
| Connector Color | Black |
| Connector Gender | Female |
| Connector Shape | Rectangular |
| Description | Switch-Temp /Engine Mount |
| Fan Open/Closed | Open |
| Fitting Gender | Male |
| Fitting Thread Size | 1/2" Pipe (27/32 x 14) |
| Material | Brass |
| Meets / Exceeds OEM? | YES |
| Mnt Sys Loc | Engine Mounted |
| Style | Temperature |
| Temperature Off | 196 |
| Temperature On | 216 |
| Terminal Quantity | 2 |
| Type | Cooling Fan |
| Product line | Temperature Switch |
| Fits | Ford and Mercury · 23 vehicles |
OE direct replacement. Meets or exceeds OEM requirements for dependable cooling control.
Brass construction. Offers durable corrosion resistance for long service life.
Temperature switch. Opens at 196° and closes at 216° for precise fan control.
Cross-references ACI 81368, Anchor 3430 and DENSO Auto Parts 5028 for the same application. See all 24.
Engine Cooling Fan Switch for Ford and Mercury
Four Seasons 35936 is a temperature switch for engine-mounted cooling fan control. It uses a brass body, a black rectangular female connector, and a 2-terminal layout to support direct electrical connection in the cooling system. This temperature switch is built to meet or exceed OEM requirements and is listed for Ford Escort, Ford Tempo, Ford Mustang, Mercury Lynx, Mercury Topaz, and Mercury Cougar applications.
Key Features
- Four Seasons Temperature Switch line for engine cooling fan control
- Engine-mounted design with a male 1/2" pipe thread fitting (27/32 x 14)
- Brass construction for cooling-system service
- Black rectangular female connector with 2 terminals
- Fan open/closed operation with 196°F off and 216°F on temperature points
- Meets or exceeds OEM specifications
- Part number 35936 for direct catalog lookup
Product Details
Four Seasons 35936 is a temperature-style cooling fan switch that monitors engine temperature and signals the fan circuit at the specified operating range. The Four Seasons Temperature Switch product line focuses on replacement switches for cooling-system electrical control, and this unit is configured for engine-mounted use with a brass threaded fitting and a rectangular female connector. It is a direct-fit replacement for select Ford and Mercury vehicles, including 1985-1990 Ford Escort, 1984-1986 Ford Tempo, 1984-1985 Ford Mustang, 1984-1987 Mercury Lynx, 1984-1986 Mercury Topaz, and 1985-1986 Mercury Cougar. Four Seasons 35936 is also referenced under cross numbers such as DENSO Auto Parts 5028 and Gates 51765 for the same application.
Common Problems This Part Addresses
- Cooling fan not switching on at the correct engine temperature
- Cooling fan staying on longer than expected after warm-up
- Intermittent fan operation caused by a worn temperature switch
- Electrical connection issues at the engine-mounted fan switch
- Incorrect temperature control in Ford Escort, Ford Tempo, Ford Mustang, Mercury Lynx, Mercury Topaz, or Mercury Cougar cooling systems
Installation Notes and Tips
Verify the connector shape, terminal count, thread size, and temperature range before installation. This switch uses a 1/2" pipe thread fitting and an engine-mounted location, so the replacement should match the original mounting point and electrical connector style. Confirm the vehicle application by year and model, especially on Ford Escort, Ford Tempo, Ford Mustang, Mercury Lynx, Mercury Topaz, and Mercury Cougar models listed for this part number 35936.
Quality Assurance
Four Seasons 35936 is manufactured to meet or exceed OEM specifications for the listed applications. The brass construction and OE-style electrical configuration support consistent replacement performance in engine cooling fan control systems.
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 1990 | Ford | Escort | — | — | N/A | Engine mounted coolant fan switch; Temperature Switch |
| 1989 | Ford | Escort | — | — | N/A | Engine mounted coolant fan switch; Temperature Switch |
| 1988 | Ford | Escort | — | — | N/A | Engine mounted coolant fan switch; Temperature Switch |
| 1987 | Ford | Escort | — | — | N/A | Engine mounted coolant fan switch; Temperature Switch |
| 1987 | Mercury | Lynx | 1.9L | L4 | N/A | Engine mounted coolant fan switch; Temperature Switch |
| 1986 | Ford | Escort | — | — | N/A | Engine mounted coolant fan switch; Temperature Switch |
| 1986 | Ford | Tempo | 2.0L | L4 | N/A | Engine mounted coolant fan switch; Temperature Switch |
| 1986 | Mercury | Cougar | 2.3L | L4 | N/A | Engine mounted coolant fan switch; Temperature Switch |
| 1986 | Mercury | Lynx | 1.9L | L4 | N/A | Engine mounted coolant fan switch; Temperature Switch |
| 1986 | Mercury | Topaz | 2.0L | L4 | N/A | Engine mounted coolant fan switch; Temperature Switch |
| 1985 | Ford | Escort | — | — | N/A | Engine mounted coolant fan switch; Temperature Switch |
| 1985 | Ford | Mustang | 2.3L | L4 | N/A | Engine mounted coolant fan switch; Temperature Switch |
| 1985 | Ford | Tempo | 2.0L | L4 | N/A | Engine mounted coolant fan switch; Temperature Switch |
| 1985 | Mercury | Cougar | 2.3L | L4 | N/A | Engine mounted coolant fan switch; Temperature Switch |
| 1985 | Mercury | Lynx | 1.6L | L4 | N/A | Engine mounted coolant fan switch; Temperature Switch |
| 1985 | Mercury | Lynx | 1.9L | L4 | N/A | Engine mounted coolant fan switch; Temperature Switch |
| 1985 | Mercury | Topaz | 2.0L | L4 | N/A | Engine mounted coolant fan switch; Temperature Switch |
| 1984 | Ford | Escort | — | — | N/A | Temperature Switch |
| 1984 | Ford | Mustang | 2.3L | L4 | N/A | Engine mounted coolant fan switch; Temperature Switch |
| 1984 | Ford | Tempo | 2.0L | L4 | N/A | Engine mounted coolant fan switch; Temperature Switch |
| 1984 | Mercury | Lynx | 2.0L | L4 | N/A | Temperature Switch |
| 1984 | Mercury | Lynx | 1.6L | L4 | N/A | Engine mounted coolant fan switch; Temperature Switch |
| 1984 | Mercury | Topaz | 2.0L | L4 | N/A | Engine mounted coolant fan switch; Temperature Switch |
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