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Four Seasons 36661 A/C Condenser Fan Switch
| Brand | Four Seasons 36661 |
|---|---|
| Connector Gender | Male |
| Description | Switch-Pressure /System Mount |
| Fan Open/Closed | Open |
| Fitting Thread Size | 3/8 in. x 24 |
| Harness Connector | 37227 |
| Item Included A Desc | 24606 |
| Item Included A Qty. | 1 |
| Material | Plastic / Metal |
| Meets / Exceeds OEM? | YES |
| Mnt Sys Loc | System Mounted |
| Operate Psi Med Off | 100 |
| Operate Psi Med On | 150 |
| Style | Pressure |
| Terminal Quantity | 2 |
| Type | Condenser Fan |
| Product line | Pressure Switch |
| Fits | Buick, Oldsmobile, and Pontiac · 12 vehicles |
OE direct replacement. Meets or exceeds OEM requirements for dependable system control.
Pressure switch. System-mounted design helps manage condenser fan operation.
Plastic and metal construction. Built with a durable mix of materials for everyday use.
Cross-references Four Seasons 36661, Karlyn 5057 and Marmon Ride Control A6415 for the same application. See all 15.
Will it fit your vehicle?
Free return shipping if it doesn't fit.
Four Seasons 36661 A/C Condenser Fan Switch
The Four Seasons Pressure Switch 36661 is a system-mounted A/C condenser fan switch built for pressure-based fan control in select GM applications. It uses a 2-terminal male connector, a 3/8 in. x 24 fitting thread size, and a plastic/metal construction to meet OEM-level requirements.
Compatible With 1987-1988 Buick LeSabre, 1987-1988 Oldsmobile 98, 1987-1988 Oldsmobile Custom Cruiser, 1987-1988 Oldsmobile Delta 88, and 1987-1988 Pontiac Bonneville, this Four Seasons 36661 pressure switch is specified for hi-side mounted systems without heavy duty cooling.
Key Features
- Brand: Four Seasons Pressure Switch
- Part number: 36661
- Type: A/C condenser fan switch, pressure style
- System mounted design for hi-side applications
- 2-terminal male connector with harness connector 37227
- 3/8 in. x 24 fitting thread size
- Open fan operation with 100 psi off and 150 psi on settings
- Meets or exceeds OEM requirements
Product Details
Four Seasons 36661 is a pressure-operated condenser fan switch used to manage A/C condenser fan operation based on system pressure. The switch is designed for vehicles that rely on hi-side mounted pressure control, helping maintain proper condenser fan response in the A/C circuit. This part cross-references UAC SW11434C for the same application.
What It Helps Address
- Condenser fan not cycling on at the correct pressure
- A/C system pressure control concerns
- Intermittent fan operation tied to switch wear
- Loss of proper hi-side fan activation on select Buick, Oldsmobile, and Pontiac models
- Replacement needs for an OEM-style pressure switch on the A/C condenser circuit
Installation Notes and Tips
Verify the connector style, fitting thread size, and hi-side mounting location before installation. Confirm the vehicle is equipped without heavy duty cooling and match the original pressure switch configuration for 1987-1988 Buick LeSabre, Oldsmobile 98, Oldsmobile Custom Cruiser, Oldsmobile Delta 88, or Pontiac Bonneville applications. Always compare the original part number and connector layout to the replacement part before service.
Quality Assurance
Four Seasons lists this pressure switch as meeting or exceeding OEM requirements, making it a direct-fit replacement choice for pressure-controlled condenser fan operation.
| Year | Make | Model | Body Type | Drive Type | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|---|---|
| 1988 | Buick | LeSabre | Sedan | — | 3.8L | V6 | N/A | Hi-Side Mounted; w/o Heavy Duty Cooling; Pressure Switch |
| 1988 | Buick | LeSabre | Coupe | — | 3.8L | V6 | N/A | Hi-Side Mounted; w/o Heavy Duty Cooling; Pressure Switch |
| 1988 | Buick | LeSabre | Wagon | — | 5.0L | V8 | N/A | Hi-Side Mounted; w/o Heavy Duty Cooling; Pressure Switch |
| 1988 | Oldsmobile | 98 | — | FWD | — | — | N/A | Hi-Side Mounted; w/o Heavy Duty Cooling; Pressure Switch |
| 1988 | Oldsmobile | Custom Cruiser | — | — | — | — | N/A | Hi-Side Mounted; w/o Heavy Duty Cooling; Pressure Switch |
| 1988 | Oldsmobile | Delta 88 | — | — | — | — | N/A | Hi-Side Mounted; w/o Heavy Duty Cooling; Pressure Switch |
| 1988 | Pontiac | Bonneville | — | — | — | — | N/A | Hi-Side Mounted; w/o Heavy Duty Cooling; Pressure Switch |
| 1987 | Buick | LeSabre | Wagon | — | 5.0L | V8 | N/A | Hi-Side Mounted; w/o Heavy Duty Cooling; Pressure Switch |
| 1987 | Oldsmobile | 98 | — | FWD | — | — | N/A | Hi-Side Mounted; w/o Heavy Duty Cooling; Pressure Switch |
| 1987 | Oldsmobile | Custom Cruiser | — | — | — | — | N/A | Hi-Side Mounted; w/o Heavy Duty Cooling; Pressure Switch |
| 1987 | Oldsmobile | Delta 88 | — | — | — | — | N/A | Hi-Side Mounted; w/o Heavy Duty Cooling; Pressure Switch |
| 1987 | Pontiac | Bonneville | — | — | — | — | N/A | Hi-Side Mounted; w/o Heavy Duty Cooling; Pressure Switch |
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