Auto Repair

1999 MITSUBISHI MONTERO
4 CYL • 2WD • MANUAL
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MARTIN GRAY
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  • 1 POST
I have a 1999 Mitsubishi, Montero Sport, 4cyl, Manual. My problem is that my truck sputters as I begin to pull off. I have replace the fuel pump, had a new catylic converter installed, replaced the 02 Sensor which did make it improve alot, I have replaced the spark plugs and wires, I have a new alternator. Any thoughts
Jun 4, 2011 at 7:20 PM
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RASMATAZ
  • CERTIFIED EXPERT
  • 75,992 POSTS
Could be caused by one of the following below-check and test

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.
Jun 4, 2011 at 7:29 PM