2003 Mitsubishi Eclipse misfire, code

Tiny
DUSTY22
  • MEMBER
  • 2003 MITSUBISHI ECLIPSE
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 11,300 MILES
My car will only miss at low rmp, you can take off reall slow, and your ok. But if you try to take off fast, it will miss real bad. You can also putt your foot on the break and then push the gas it will miss so bad it will almost die. Also if you try to pull a hill it will miss, untill it kickes a gear up. Then it will pull fine. I have not tried anything yet dont want to wast alot of money. If you have any hints or tips please e-mail me.
Saturday, October 31st, 2009 AT 6:58 AM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Oxygen sensor
Dirty fuel injectors (cleaning the injectors often fixes this).
Bad MAP (manifold absolute pressure) sensor
Bad TPS (throttle position) sensor
Bad or dirty MAF (mass airflow) sensor
Low fuel pressure (leaky fuel pressure regulator or weak fuel pump)
Vacuum leaks (intake manifold, vacuum hoses, throttle body, EGR valve)
Bad gasoline (fuel contaminated with water or too much alcohol)

Sometimes, what feels like a hesitation is actually ignition misfire rather than lean misfire. The causes of ignition misfire may include:

Dirty or worn spark plugs
Bad plug wires
Weak ignition coil
Wet plug wires
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Saturday, October 31st, 2009 AT 7:49 AM

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