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Q: 40-45 mph car jerks badly stomp on gas straightens up has large and small leak on 2000 Ford Mustang

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
has large and small evap emissions codes in computer
No car image 94a1663db56199c5353592009e34aaa51078a2469bed068bb8d6f0ba43accf97
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Evap codes will have no relation to how engine runs...probaly a differant issue causing jerking....more like a ignition missfire more likely.
At 40-45 mph this vehicle may exhibit such a jerk when it is time for a tune up. At this cruising speed egr flow is present and can overwhelm a weak ignition system causing such a symptom. Don't skimp on parts. Do a major tune up. Check the fuel filler neck for cracks or excessive rust. Take off the gas cap and check in the filler neck. Also check gasket on gas cap for cracks.
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