If I turn it on to high speed, my swamp cooler "turns" but it's the same speed as if it were on "normal." What gives?

Other clues: when it's on "high" it has very short lived bursts where it blows a little extra.


Turns out it was a loose belt. Once I tightened the belt between motor and pulley then it worked fine. Even the "low" speed was higher than what the old speed(s) both used to be.

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