Quote:
Originally Posted by trader4
It's not a train. You don't need resistors, you just put the fan on
full speed if it's needed. And if it's needed is determined from the
temp of the coolant and/or temp of the refrigerant at the condenser.
If either goes too high, fan goes on. It drops below the set temp,
fan goes off.
Having a variable speed fan means not a wit in terms of the driving experience, performance, or anything else the driver will ever notice.
The increased cost from this abortion, the
high failure rate and paying $500 for a part, *that* most people will notice.
It's a classic example of complication for no benefit, except to the
dealer service dept and bottom line.
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With the mandates by the Fed to increase mileage for a manufacturer's fleet of cars, having a fan run full speed will discharge the battery sooner which will require the alternator to work harder or longer, which in term will cause the engine to work harder and use more fuel. The corporate mileage will suffer from this.