Engine Stalling and/or Hesitation on Acceleration due to Faulty Idle Air Bypass Valve on Ford Escort

If you experience difficulty starting the engine when cold, stalling at idle, or hesitations during acceleration, it may be the idle air bypass valve. This valve helps the vehicle idle steady when the accelerator pedal is not pressed.

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Average mileage: 123,766 (114,000–132,300)
Engines affected: 1.9L 4 Cylinder, 2.0L 4 Cylinder, 2.0L 4 Cylinder DOHC, 2.0L 4 Cylinder SOHC
4 model years affected: 1990, 1991, 1997, 2003 more
7 people reported this problem
1 person shared problem details
2003 Ford Escort- 2.0L 4 Cylinder SOHC125,000
whenever I am at a stop sign or stop light car idle very roughly.
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