What to do if the Citroen C-Quatre's fan doesn't work when the AC is on?
3 Answers
Repair method: Use a multimeter to measure the contact resistance of the main control switch. If the resistance is too high or zero, it should be repaired or replaced. The fastening screw between the fan motor and the fan blade is loose. Repair method: Tighten the fastening screw. The fan capacitor is open or short-circuited. Repair method: Check the capacitor and replace it with one of the same specifications.
I usually enjoy tinkering with my car myself. When the air conditioning fan of my Citroen C-Quatre doesn't work, the first step is to open the hood and check the fuse box to see if the fan-related fuse is blown. If the fuse is intact, I'll test whether the relay is working properly by using a simple test light to check if there's power at the plug. Sometimes the fan may get stuck or the motor bearings may wear out, causing problems - I gently rotate the fan blades to see if they turn smoothly. The fan also won't start when the air conditioning system pressure is low, which requires professional equipment to test, but I recommend checking the basic items first. After washing the car, avoid directly spraying water on electronic components to reduce the failure rate. If I can't fix it myself, then I'll consider finding a professional mechanic - it saves money and gives peace of mind.
Safety is always my top priority. If the fan on my Citroen C-Quatre stops working, it could lead to engine overheating. In such cases, I immediately pull over and avoid driving further. After turning off the AC, I wait for the engine to cool down before checking the fuse box to see if the fan fuse is blown or if there's any relay malfunction. Loose wiring connections are also a common culprit, so I inspect whether the plugs are secure. Preventive maintenance, like regularly cleaning the radiator and fan blades, can help avoid clogging issues. If the fan is completely broken, replacing it is relatively straightforward, but when it involves refrigerant checks, I prefer to take it to a professional auto repair shop to ensure everything is handled properly.
