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- Verify anomalous air inputs to admission, which leads to regulating the initial idle in a erroneous way and happens that under certain conditions, when regulating the very low slowdown, the engine can be stopped.
- Improcenti stabilizer valve with incorrect operation. Check if the valve opens quickly and totally without getting hooked or getting stuck when applying 12 V. Caution: without applying 12 V voltage to the valve does not move the rotating piston of the same; It deteriorates.
- The resistance of the stabilizing valves coil usually have values of about 30 ohms, which is equivalent to saying, applying a voltage of 12 V about 400 mA (milliamperia) = 0.4 amps that will be perceived if we touch the valve with the hand as a tingling or permanent vibration are generated. The OHM law is simply confirmed: i = v/r, that is: 12/30 = 0.4 amps = 400 mA
carboneous deposits or waste produced by gasoline on the low parts of the stem of the intake valves, which prevents that between sufficient amount of air to the cylinders.
- Incorrect thermal grade spark plugs for the displacement and power.
- Dirt in the platinum thread (thermal element) of the air mass meter
- I regulated slowed down with the open butterfly switch, falsifying the control unit the continuity signal in a while.
- In some cases the Lambda probe is flooded by too much oil level in the crankcase.
- Without 12 V voltage, the stabilizer valve must have only the emergency scarce open.
- When disconnecting the battery, replacement of the control unit, or tension failure, idle variations may occur.
- If a radio device was mounted by connecting the volume to the speed function in the instrument frame, when stopping at a traffic light, the speed signal is incomprehensible and the engine stops.
It may seem a lot of theoric but they are the most common failures in these cases ...