How to Determine if a Car Air Conditioner Thermostat is Faulty?
2 Answers
Determine if the car air conditioner thermostat is faulty, causing intermittent cooling in the car air conditioner. Below is an introduction about car parts: 1. Introduction: Car parts are the individual units that make up the entire vehicle and products that serve the car. 2. Identifying authenticity: (1) Check packaging and printing: Genuine parts usually have standardized packaging with uniform specifications and clear, regular printing. (2) Check color and paint: Some original parts have a specific designated color on the surface; if other colors are found, they are likely counterfeit parts. (3) Check appearance and feel: Original parts have clear and regular printing, casting, or markings, while counterfeit products have a rough appearance.
Last time I took my old Buick for an outing, I encountered a thermostat failure, and it was particularly noticeable. While driving, the AC suddenly started blowing only hot air, and the vents were so hot you could fry an egg on them. Turning the temperature knob to the lowest setting didn’t help. Later, after stopping to check, I found the compressor wouldn’t shut off, and the AC pipes in the engine bay were frosted over. The mechanic said this was because the thermostat was stuck and couldn’t sense changes in the cabin temperature. Another telltale sign was hearing the relay in the engine bay clicking rapidly at stoplights, like playing castanets. If you notice this happening, it’s best to turn off the AC immediately to avoid damaging the compressor.
