Hi GLKSADDD,

Strange, the engine revs will decline after start up to the idling state, that is normal.

However there is nothing inside the package internals that will cause it to default to 0, this sounds like a hardware conflict issue off first thought.

1. Do you have any external peripherals connected to your computer? Are they mapped properly in your sim settings?
2. If you have any peripherals disconnect all of them and restart your sim. Connected only keyboard+mouse. Does the issue still persist using default sim keybinds/controls?

"The mouse can activate the sim throttle when it is visible but that is not often."
The throttle assembly is missing sometimes from the cockpit?