[bobinyelm]

This is for my neighbor-

She suddenly started having her electric fan come on at full speed as soon as she switches the car on in the morning (engine dead cold 60 def F or so), and never goes off.

I read a thread where they said that is a frequent symptom of a failing water pump.

She states there is no Check Engine Light displayed, nor has the car ever exhibited coolant leakage, or any abnormal temperage reading.

The thread mentioned a faulty pump will frequently run the electric fan on high before it shows any real failure which doesn't make sense to me.

I have an Autel MK808MP bi-directional scantool that generally pulls manufacturer's proprietary codes

I have not yet hooked it up, but was looking for an opinion on whether it sounds plausible if a functioning water pump will cause the continuous fan problem, and what code if any should show up in memory.

Thanks,
Bob