Do you rev in park or neutral?
Hear this out loudPauseyour engine is revving the same whether the engine is in park/neutral or any gear. the only difference is that there is no load on the engine so its not working quiet as hard as it is when its driving.
Can you rev in neutral?
Hear this out loudPauseYou can also rev the engine with the car in neutral, but if you opt for this, be sure your other foot is on the brake; in neutral, the car can roll forward and backward. When revving the engine, be sure to not let the RPM get into the red area on the tachometer (we’ll talk more about the dangers of redlining later).
When to put transmission in Park or neutral?
Airflow High/PN:Proportional adjustment when RPM Error is positive (RPM is greater than Desired Idle RPM), transmission is in Park/Neutral. Airflow Low/PN:Proportional adjustment when RPM Error is negative (RPM is less than Desired Idle RPM), transmission is in Park/Neutral. Airflow:Proportional adjustment in relation to RPM Error.
What happens when the RPM error is negative?
When Error RPM is negative(RPM high) then values are subtracted from idle airflow, otherwise values are added. Airflow High/In Gear/AC Off:Proportional adjustment when RPM Error is positive (RPM is greater than Desired Idle RPM), transmission is in gear and AC is off.
Why does my RPM drop when sitting idle at traffic lights?
While I’m sitting idle at traffic lights I put the car into neutral. The engine stays idling at about 1000 RPM. However every now and then it drops down to about 500 RPM and then quickly back up to about 1200 then goes slowly down to 1000 and stays there for a bit until I go again or it drops again.
What are the parameters for adaptive idle RPM?
Adaptive Idle RPM The adaptive idle parameters are only updated under warm engine, steady idle conditions. These conditions are described by the parameters below. Max ECT:Engine coolant temperature maximum for adaptive idle updates to occur. Min ECT:Engine coolant temperature minimum for adaptive idle updates to occur.