My 2011 Ford Escape hesitates to accelerate in the 1st, 2nd and 3rd gear.. the RPM's go high 3000-4000, engine sounds really loud. The fuel economy has dropped considerably in last few months. Overall drive is rough, it runs like a 20 year old vehicle. What could be the issue ? Bad PCV, MAF sensor ? Throttle body ? Please advise.
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