May be throttle plate stuck--with engine off try to "free" up with screwdriver
Once the engine warms up it should be in between 600-800 rpms.
Loud idle? no, not turn over ,yes
A bad camshaft can cause your engine to idle high and overheat. A fuel injector pump that needs to be adjusted can also cause the same problems.
No it will not. It only controlls the idle of the engine.
how to adjust idle on 2001 legacy
car run good but has a little vibration idle or running
Why does my 2001 kia sportage idle rough?
Yes if it is stuck open.
Could be a frozen throttle plate in throttle body - try to free with a screwdriver in throttle throat
Most common high idle issues are leaks in the vacuum system.
Check the alternator.