Keep your A/C compressor clutch cycling at a set temperature with this Four Seasons switch, the A/C Clutch Cycle Switch / Thermostatic Switch 35719, a system-mounted, preset cycling temperature switch. It fits many vehicles, among them the 1975-1983 Ford E100 Van, 1975-1983 Ford E150 Van and 1975-1983 Ford E250 Van, as a direct-fit replacement for the listed applications. See the "Vehicles it fits" section for the full list and engine details.
A thermostatic cycling switch senses A/C system temperature and switches the compressor clutch on and off, which helps keep the evaporator from icing over. The cycling point is preset, so there is nothing to adjust. This part is listed under both names, A/C clutch cycle switch and thermostatic switch.
- OE-style connectors: used for the electrical hookup.
- Quality contacts: designed for proper electrical conductivity.
- Seals included: comes with the gaskets, O-rings or seals needed to properly replace the switch.
- Precision engineered: Four Seasons engineers and tests its products and has more than 50 years of mobile A/C experience.
A compressor clutch that won't engage, cycles erratically or stays engaged, or an evaporator that ices up, are signs this switch may need replacing. Other A/C faults can cause the same symptoms, so diagnose the system first. If the original cycling switch has failed, the 35719 replaces it.
Product information is for general reference and may contain errors. See our Disclaimer.
Frequently Asked Questions
What does the Four Seasons 35719 switch do?
It is a preset cycling temperature switch. It senses A/C system temperature and cycles the compressor clutch on and off, which helps keep the evaporator from freezing over.
Does the cycling temperature need to be adjusted?
No. The switch is preset, so there is no cycling-point adjustment to make during installation.
What comes with the switch?
It includes the gaskets, O-rings or seals needed to properly replace the switch, and it has OE-style connectors for the electrical hookup.
What are signs an A/C clutch cycle switch may need replacing?
Signs include a compressor clutch that won't engage, short-cycles or stays on, or an evaporator that ices up. Other faults can cause the same symptoms, so diagnose the A/C system before replacing parts.
Will it fit my 1975-1983 Ford E150 Van?
Yes. It is listed for the 1975-1983 Ford E150 Van, along with the 1975-1983 Ford E100 Van, the 1975-1983 Ford E250 Van and many others. Check the "Vehicles it fits" section for your exact vehicle.
