![]() ![]() The idle spring adjusting nut can be slightly screwed inward or a washer is placed on the spring seat to increase the preload and increase the idle speed. If the adjustment is invalid, adjust the pre-tension force of the idle spring. When checking the governor, first adjust it with the idle screw. The fuel injection pump assembly must be removed and the maintenance adjustments must be repeated on the test bench.ĭ. Check if the governor spring is broken or the governor is too worn or the spring is too soft, so that the centrifugal force of the flying hammer during idle operation is much greater than that of the spring tension and reduce oil, or the maintenance personnel do not adjust properly. If the above conditions are normal, the idle working element of the governor should be considered for abnormality. As long as according to the insufficient power treatment, the idle condition will naturally recover.Ĭ. It is generally the plunger wears too much, and the oil leakage increases at idle speed, so that the oil supply cannot meet the idle speed requirement or the cylinder pressure is too low, the fuel injection advance angle is too large, too small, resulting in poor engine combustion conditions. If the engine has been used for a long time, there is no idling condition, and the fuel consumption is not normal due to insufficient power. In this case, the throttle can be adjusted to run at a slightly higher idle speed, and then resume idle operation after the engine heats up.ī. This is because the temperature is too low, the viscosity of the oil is too large, the internal resistance of the engine is increased, the spray and evaporation conditions of diesel oil become worse, resulting in the engine can not maintain the minimum stable speed operation, when the throttle is raised, it will turn off quickly. There is no idle speed at cold start, which is generally a normal phenomenon. The plunger of the fuel injection pump is seriously worn.Ī. The governor sensing element is worn too much.Ĭ. The governor idle spring is too soft or broken.ī. When the throttle is slightly enlarged, the speed is increased quickly and cannot be stably operated at a low speed.Ī. Generally, the throttle is turned off when it is placed at the idle position. There are many walk-thru guides that can be found in several forums on how to accomplish this if your truck needs it.The engine has no idle speed. Some trucks will require that that pin be grounded first, including many Manual transmission trucks. ![]() This includes the majority of the trucks equipped with automatic transmissions. These steps will only work on vehicles that have the ECM B plug pin number 22 grounded from the factory. To stop high idle, you can tap the brake, the cruise cancel button, or turn cruise off.Press the accelerate button for the cruise control to increase idle.To use the high idle feature do the following: Open the door so all the electronics in the vehicle power down.Turn the key off and pull the key out of the ignition.press go back until you are back on the main gauge screen of the device.Select Special Functions from the main menu.With the key on and engine off go to the main menu on the GT.To enable the high idle on a 03-07 5.9 Cummins do the following: How do I enable high idle on a 03-07 Dodge Cummins 5.9L with a Bully Dog GT Tuner? ![]()
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