To verify the operation of the pressure sensor on the Ford Mondeo III, you must: Disconnect the hose from the pressure sensor and cover the hole with the finger. Using a partner to start the engine and bring it to medium speed (about 2000 rpm).Re-attach the hose to the sensor at a constant speed. Because the sensor is pressurised, the control unit's ignition timing should be adjusted. Engine rotation shall be reinforced with the same gas pedal position.
- Disconnect the hose from the pressure sensor and cover the hole with the ends of the finger.
- Using a partner to start the engine and bring it to medium speed (about 2000 rpm).
- Reattach the hose to the sensor at constant speed.
- As the sensor is pressurize, the timing of the control unit's ignition should be adjusted. Engine rotation shall be reinforced with the same gas pedal position.
If the speed remains constant, this means that the vacuum hose is not airtight or the pressure sensor is not functioning satisfactorily. The engine notes this fact by decreasing power and poor parameters of the waste gas.
