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1999 Nissan Altima car studders while driving and cuts off

Tiny
JAZZYMAC94
  • MEMBER
  • 1999 NISSAN ALTIMA
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 190,000 MILES
I am having problems with my car cutting off in traffic and hesitating to go. It studders. I have to press the gas hard so that it will not cut off. I have had mechanics look at it. One found bad spark plugs.
Sunday, February 14th, 2010 AT 11:37 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Inspect and test all the following listed below:

Oxygen sensor
Catalytic converter
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)
Dirty or worn spark plugs
Bad plug wires
Weak ignition coil
Cap and rotor

Note: If it doesn't apply disregard.
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Monday, February 15th, 2010 AT 3:26 AM

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