Then mine is definitely high speed. I can hear it from the outside, when I'm several yards away. And, I can hear and feel it when I'm inside the car, if the car is idleing. The sound is the same, whether the fan kicks on because of the a/c being engaged, or whether the fan kicks on because the temperature reaches a high level. This is further evidence that my low speed relay/fan/etc is not working, which explains why the temperature gauge goes to the L in normal before the fan ever kicks in.
