2005 Mazda MPV

2005 MAZDA MPV
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DHICKMAN
  • MEMBER
  • 1 POST
Engine Performance problem
2005 Mazda MPV Front Wheel Drive Automatic 67000 miles

my car has been jerking alot and not having alot of power after it rains. the dealer has put on a new ignition coil twice but the problem remains.
Jan 13, 2010 at 10:53 AM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,988 POSTS
Check and test the following below:

Oygen 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
Cap and Rotor

Note:If it doesn't apply,disregard.
Jan 13, 2010 at 11:01 AM
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