Idler pulley on 2000 Dodge Grand Caravan

Squeeking from Idler pulley area when cold,dissapates when engine is warm. Pulley was replaced last year and now is doing again. Other than replacing every year what can I do to eliminate this? What should the cost be to replace pulley and time needed? Also had the serpintine belt replaced about a month before the pully

Asked by for the 2000 Dodge Grand Caravan
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