What does it mean when RPMs jump while idling?
An idle surge can be caused by multiple phenomena. The idle air controller is simply a computer-controlled motor that controls idle. There could also be another sensor that is telling the computer to compensate, and in turn, this causes the idle to surge as it looks for the correct RPM level.
Why does my RPM go up when parked?
If the engine can’t keep idling, it will continue trying to get it revved up to compensate. The cause of the erratic engine you’re experiencing could be a vacuum leak, sensor failure, or an EGR system malfunction.
Are there any problems with the Allison Transmission?
Allison transmissions are custom-designed for several different industries and provide valuable power and work. However, even these revolutionary pieces of equipment can have problems. Do you know how to identify and deal with an issue that may arise with your Allison transmission?
What does limp mode mean on an Allison Transmission?
This transmission state is often called “limp mode” – a built-in protective behavior for some types of Allison transmissions when a serious problem is sensed. Transmission temperature was normal. I shut the engine off, and then restarted.
Is there a cure for the Allison lct1000 transmission?
Well there you have it: the most likely causes and possible cures for the most common problem plaguing the Allison LCT1000 transmission: inhibited shifts or gear ranges. With a better understanding of how the Allison LCT transmission group operates, you should have no problem keeping those trannys rolling.
What happens to your car when you go up a hill?
When you are driving a car, your engine and all the other components must work extra hard if you’re moving up an incline or a hill. You need to have enough power to be able to accelerate a vehicle anywhere, especially up a hill where gravity is pulling against it.