Auto Repair

Tiny
MARTIN GRAY
  • MEMBER
  • 1999 MITSUBISHI MONTERO
  • 4 CYL
  • 2WD
  • MANUAL
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
Saturday, June 4th, 2011 AT 7:20 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 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.
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Saturday, June 4th, 2011 AT 7:29 PM

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