2008 Nissan Altima Jerky Movements

2008 NISSAN ALTIMA
43,000 MILES • 4 CYL • 4WD • AUTOMATIC
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KMWILLIAMS0923
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  • 1 POST
On two different occassions, during rainy weather, my car has jerked several times. I was driving at a very slow speeds on the Interstate (freeway) both times this occurred. I am going in to the Nissan dealership on Tuesday to get a 100-point inspection. Could this be considered intermittent misfiring and if so, can it be diagnosed from the inspection? Another question, if this is in fact misfiring, is this a terribly expensive problem to correct?

Thanks so much

K Williams
Oct 10, 2009 at 9:44 AM
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RASMATAZ
  • ✓ASE Certified Mechanic
  • 75,992 POSTS
  • ASE Certified Mechanic
Could be caused by one of the following below:

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
Oct 10, 2009 at 10:08 AM
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