2002 Mazda 323

2002 MAZDA 323
154,000 MILES • 4 CYL • FWD • AUTOMATIC
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YOTAN27
  • MEMBER
  • 1 POST
HI,MY MAZDA 323F HAVING A PERFORMANCE PROBLEM,THE ENGINE IS JUMPING WHEN I WANT TO ACCELERATE,LOOSING POWER WHEN I DRIVING 60-70 MILES PER HOUR,IT IS NEARLY UNDRIVABLE.I WENT TO MAZDA SERVICE,THEY CHANGED THE COILS,THE FUEL FILTER,NOTHING HAPPEND,AND THE COMPUTER CANNOT FIND ANY PROBLEMS!CAN YOU HELP ME,PLEASE
Jun 24, 2010 at 8:24 AM
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RASMATAZ
  • ✓ASE Certified Mechanic
  • 75,992 POSTS
  • ASE Certified Mechanic
Possibilities: Inspect and test all the following listed below:

Oxygen sensor.
Catalytic converter.
Fuel injectors dirty/sticking.
Mass airflow sensor/Airflow meter.
Throttle position sensor.
Crankshaft 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
Jun 25, 2010 at 1:59 AM
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