Are any warning lights coming on or have been on?
How many miles do you have?
Hello Woodland,
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Thanks Chris
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My wife owned a 05 freestyle with a CVT and I myself was the only ford certifed CVT tech for all of 05-06 in Tennessee. I am very familar with this trans, either driving or repairing it. I do not feel your symptoms are coming from the CVT. It sounds more like the beginning stages of a failing electronic throttle body. I recommend this service shown below as a first step.
Ford Technician
Ford trained Tech. Trans, X-fer Case, Steering & Suspension & Brakes, Engine, Electrical