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Whats wrong with car

Tiny
VEERY3422
  • MEMBER
  • 1999 MAZDA 626
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 148 MILES
Took to do diagnostics. Computer say egr, replaced and the car is still sputtering. Check engine light is not on. Changed and checked the fuel pump and filter both r fine
Wednesday, March 16th, 2011 AT 1:18 AM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
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 testin
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Wednesday, March 16th, 2011 AT 10:50 PM

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