2005 Toyota Echo jerking when accelerating around round a b

2005 TOYOTA ECHO
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VICMUSS
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Transmission problem
1985 Toyota Echo Automatic 100100 miles

since i had a service done last year, my car has been jerking when i accelerate off from going around a roundabout or accelerating quickly up a hill. it sometimes does it when picking up speed from traffic lights too. it's fine at higher speeds and changes gear smoothly when driivng along. last year when i went to pick my car up from service i had to go return later because he said the apprentice had drained the tranmission oil and he needed more time to get it back to me. i had it serviced for 100,100km this week and so oil levels are fine. not sure what to do and whether i should get it attended to. any suggestions about what it could be and what i should do? thanks!
Apr 10, 2010 at 4:40 AM
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RASMATAZ
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Tranny could be slippping-If not could be one of the following below

Oxygen sensor.
Catalytic converter.
Fuel injectors dirty/sticking.
Mass airflow sensor/Airflow meter.
Throttle position sensor.
Manifold absolute pressure sensor.
EGR Valve
Fuel pressure regulator leaking or defective fuel pump.
False air leakage.
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.
Apr 10, 2010 at 2:05 PM