1999 Ford Contour check engine light

1999 FORD CONTOUR
165,000 MILES • 6 CYL • FWD • MANUAL
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JESSEBELL3
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  • 1 POST
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?
Jul 29, 2009 at 7:30 PM
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RASMATAZ
  • CAR REPAIR CONTRIBUTOR
  • 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
Jul 30, 2009 at 3:44 AM
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