Idling fault phenomenon (Dieselpartsworld) 2016-02-28    

The engine idle speed appeared idling fault maintenance of 300 ~ 800r/min
Idling fault phenomenon
After starting the engine idle jitter jitter are serious, at any speed of the exhaust pipe is very powerful, "chug" sound. Rapid acceleration of slow speed, the engine running. The idle speed between 300 ~ 800r/min travel car, sometimes automatic flameout, engine fault light is lit, the exhaust has an unpleasant smell of sulfur.
Idling fault analysis
4 cylinder engine idle speed will be 500 ~ 800r/min, the idling of the 2 cylinder cylinder.
Such as the lack of the two cylinder four cylinder engine is reduced to approximately 300r/min, the control unit will be adjusted by adjusting the speed of the stepper motor, idle air valve or solar term door opening degree.
When the engine tachometer is shown as changes regularly in the idle speed of 300 ~ 800r/min.
As the straight type idle speed control system (idle stepper motor installed in the solar term door), when idling stop door can see the solar term that transform the opening angle, stepper motor in constant adjustment.
To adjust the standard idle speed limit from low idle stop.
At the same time, two cylinder, the most common is a circuit breaker ignition coil. Share a two cylinder ignition coil, ignition using series form, if an ignition coil problem, will affect the work of the two cylinders.