Symptoms of a Cooling Fan Module Failure. A problem in the cooling fan module will not go undetected in your Volvo because of the important role that it plays. Some of the symptoms that you will notice immediately when this problem occurs include: An overheating engine. When the cooling fan module fails completely, the cooling fans will not
Below are four signs that cooling fan failure may be imminent in a Volvo: The engine temperature gauge rises into the red zone: If you notice your dashboard engine warning light illuminating, it is most likely because the engine is overheating. Immediately pull over in a safe area and turn the engine off.
If the fan does work when the engine is hot but does not when A/C is switched on, then could be either low refrigerant charge, bad pressure sensor, or bad compressor/clutch. I'm not sure what you are referring to as the 5 A ECU fuse, but it can't be the fan power source as this is far too low to support the fan.
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  • volvo cooling fan not working