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1999 Ford Contour check engine light

Tiny
JESSEBELL3
  • MEMBER
  • 1999 FORD CONTOUR
  • 6 CYL
  • FWD
  • MANUAL
  • 165,000 MILES
The check light engine is on and upon acceleration from a stop there is a slight sputter/hesitation which goes away at higher speeds. What are the possibilities?
Wednesday, July 29th, 2009 AT 7:30 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
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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Thursday, July 30th, 2009 AT 3:44 AM

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