• Tiny
  • maddog1969
  • 1977 Ford LTD

Engine Performance problem
1977 Ford LTD V8 Two Wheel Drive Automatic 90000 miles

why does my car hesitare when I mash the gas paddle for the car to accelarate

Tuesday, October 14th, 2008 AT 1:40 AM

1 Answer

  • Tiny
  • rasmataz
  • Member

Possible Causes of Engine Hesitation: 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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Tuesday, October 14th, 2008 AT 5:40 AM

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