1999 Ford Escort engine hesitates

1999 FORD ESCORT
80,000 MILES • 4 CYL • FWD • AUTOMATIC
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DGJSSP
  • MEMBER
  • 1 POST
The engine in my car hesitates for a moment when you step on throttle. Mostly does it while under load. Also when cruising barely any throttle the rpm will drop to the idle and kick back up when you give it some throttle
Feb 14, 2010 at 9:45 AM
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RASMATAZ
  • ✓ASE Certified Mechanic
  • 75,992 POSTS
  • ASE Certified Mechanic
Inspect and test all the following listed below:

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)
Dirty or worn spark plugs
Bad plug wires
Weak ignition coil
Cap and rotor

Note:If it doesn't apply disregard.
Feb 14, 2010 at 7:25 PM
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