transmission problem?

2001 FORD MUSTANG
140,000 MILES • 6 CYL • AUTOMATIC
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SVTNUKKA
  • MEMBER
  • 1 POST
My car hesitates under light-mid throttle, its especially noticeable under light acceleration up a hill, or when im cruising around 45mph and start to lightly accelerate, the car will start to "buck" a bit before i start going anywhere. if i floor it, theres no problem at all pulls through all gears fine. its a 2001 mustang v6 with an automatic transmission, it has 140,000 miles and has had proper maintenance and oil changes, car has had a tune-up at 110,000 mi and the transmission fluid had also been changed
Jan 23, 2011 at 10:53 PM
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RASMATAZ
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 75,992 POSTS
Lack of acceleration,chugging,hesitating********,bogging,misfiring etc. could be caused by one of the following below

Oxygen sensor.
Catalytic converter.
Fuel injectors dirty/sticking.
Mass airflow sensor/Airflow meter.
Throttle position sensor.
Crankshaft position sensor
Knock sensor
Manifold absolute pressure sensor.
EGR Valve
Fuel pressure regulator leaking or defective fuel pump.
Fuel contamination.
Foul/defective spark plugs.
Open spark plug wires.
Ignition coil/Coil packs defective.
Incorrect ignition timing.
Cap and rotor.

Note:If it doesn't apply disregard it and keep testing.
Mar 14, 2011 at 9:08 AM
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