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1993 Nissan Altima

Tiny
LEALEALEA
  • MEMBER
  • 1993 NISSAN ALTIMA
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 181,045 MILES
When I, m driving and press down hard on the gas pedal, the engine rev, s high but the car does not pick up the speed it is suppose to. Then once the speed do pick up to about 40 or 45mph the car starts to putter. What do you think it may be.
Friday, November 27th, 2009 AT 7:28 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
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)

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, November 28th, 2009 AT 2:56 AM

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