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Around 750 rpm with warm engine and in gear.Around 750 rpm with warm engine and in gear.
A typical idle speed for a normal car engine is 600 rpm to 1,000 rpm. It is higher for buses and motorcycles. RPM stands for revolutions per minute.
It maintains engine idle rpm when the throttle is closed.
750 rpm
for same power diesel engine produces more torque @ less rpm whereas petrol engine produces less torque @more rpm this difference is due to different combustion processes of diesel and petrol
About 600 RPM
The IAC valve is just that...The Idle Air Control Valve. It is responsible for keeping the idle at set parameters. And yes, it can make the engine idle at high RPM.
800 rpms.
anywhere from 800 to 1000 RPM.
No, an engine idle RPM being not zero is not a problem. If the idle were zero, the engine would not be running!
When an engine is in "idle" it is taking over by itself without any acceleration (or load) being applied. This the "idle RPM" would be the number of revolutions it makes per minute while running at "idle".
Im guessing your asking @ what RPM is the 4 cylinder engine supposed to idel at. Well, theres usually two idle settings. A cold idle and a warm idle. You didint mention for what engine, and that's important because every engine has its own correct idle but to give ya a rough idea, the cold idle is usually 950-1000 RPM and warm idle is usually 850-900 RPM!