jeremy 8/2/2012

1991 Nissan Pathfinder XE 6Cyl3.0L - Engine

Follow

Why does it hesitate and sputter when I accelerate

Recently my gas and temp guages went out at the same time. Shortly after the engine feels like its chocking out. It sputters and hesitates really bad when I try to accelerate. I replaced the coolant temp sensor but got no results. What can I check

Answer This Question

Follow Question what's this?

( characters left)

Add Answer Community Guidelines

answers

• 
  Jimm 8/2/2012

  Possible Causes of Engine Hesitation or Stumble:
  
  Dirty fuel injectors (cleaning the injectors often fixes this).
  Dirty / clogged air filter element (change the air filter)
  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

  Reply

  0

  

  jeremy 8/3/2012

  Thank u very much I appreciated all your info. Now I have a list to attack