as rv's resident mechanic-- trust me when I say-- everyone you've talked to is retarted, and its DEFINATELY, your tranny- the engine revving and what you describe as delayed engagement are signs of transmission damage... Ford Taurus transmissions are notorious for blowing out after 30K miles, so consider yourself lucky cuz Im sure it got more than that- you can try having the fluid changed, which cost like 100 bucks, which might clean the electronic eye and restore regular performance, or you might need more work, but its definately the tranny, if it was engine related, the engine wouldn't run, or you'd have different problems.

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