Maintenance
CHECKING ENGINE DURING IDLE
B
The engine control unit is designed to adjust the torque issued by the engine during idle. Set up the connection between the control unit and the diagnostic software. With the engine warm and the fans on, in idle, in neutral, observing the following parameters through the diagnostic software within the recommended intervals, you are able to control the operation of the correct motor. F3 675 – F3 ORO:
Engine rpm Adaptive lambda check Suction pressure Engine load Throttle capacity adaptability
1400 ± 200 rpm min -0,15 500 ± 100 mbar 25 ± 10 % min - 2%
max +0,15 max +2%
Operation outside of the recommended intervals is a sign that the engine is not running correctly.
If the recommended intervals are not being maintained, it is a good idea to proceed with the following checks in order to find the cause that is making the engine operate outside of the intervals provided above: - checking, with a diagnosis, the validated system errors; - checking the petrol pressure and making sure the injectors are working; - making sure the throttle body is working correctly; - making sure the exhaust is working correctly (correct installation, holes, leaks, the state of the catalyst, etc); - checking engine phase.
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