Q: What could be wrong with it

asked by on August 17, 2016

What could the problem be when im driving at a consist speed my car kind of hesitate but when it do that my rpm go from two to one back to two or if I was going 25/30 mph it'll jump from like one to two back to one. But no check engine light is on. And Also smells gas when parked or driving

My car has 169866 miles.
My car has an automatic transmission.

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