Is the fan actually driven by a belt? Most cars these days have electric fan drives controlled by the ECU.
What the 'fan belt' probably does is drive the water pump and alternator. Many cars have a separate belt for aircon pump and maybe power steering (some cars have electric power steering so depend on the alternator/battery being able to supply power.)
Running at motorway speeds in Britain in February a fan is unnecessary, the slipstream of air through the radiator is enough, but if the waterpump doesn't run overheating is probable.
Also, if the alternator hasn't charged the battery I'd expect warning lights anyway.
|