0:00 / 14:37 VOLVO "HOT HATCH" RADIATOR FAN FIX | Volvo C30 T5 [Finale] FLIP MY RIDE 3.19K subscribers Subscribe 2.6K views 2 years ago In this episode the Volvo C30 T5 R-Design gets sold The most common reasons a Volvo S80 radiator fan isn't working are the fan assembly, the fan clutch, or the coolant temperature sensor. 0 % 45 % of the time it's the Fan Assembly 0 % 45 % of the time it's the Fan Clutch 0 % 10 % of the time it's the Coolant Temperature Sensor Common Repairs Serpentine Belt Replacement You can test things by grounding, one at a time, the relay pins associated with the yellow and the yellow/white wires that go to the center of the cooling fan relay. One should turn the fan on high speed and the other should turn the fan on low speed. If that works then the fan and the relay are good. Reasons a Volvo XC90 Radiator Fan Isn't Working. The most common reasons a Volvo XC90 radiator fan isn't working are the fan assembly, the fan clutch, or the coolant temperature sensor. Your volvo fan relay is a two stage (speed) relay. It constantly has a 12v feed. As soon the ECU provides low or high speed ground signal to it, it will energize the fan accordingly. Have you started noticing that your air conditioner isn't running quite as cool as it once did? There's a chance that this is related to a defective volvo fan relay. .

volvo cooling fan not working