Should be about 8 or 900 RPM.
Rpm Red line 1968 Pontiac firebird 400 HO
I'm having the same problems. my 94' Firebird is a 3.4l v6 and varies on the range of RPM's when you put it in park or neutral. i took it to a local repair shop and they said it could be a broken computer chip. or simple as restoring the defaults on the computer chip
It is normal for the RPM to increase a little when put in park or neutral. If the RPM increases by a lot, then you need to adjust your idle speed.
RPM tells you how many revolutions per minute your engine is running. When you're in park, the engine is still going, so RPM's will be above zero.
Yes, the computer is programmed to only allow a certain rpm while in park.
the idle should be about 900 RPM in park or neutral.
The shifter cable needs adjusted.
19 City 31 Highway
305 HP @ 5,200 rpm
165 hp @4000 rpm
Adjust your idle.
For most newer vehicles this is normal. It puts unnecessary wear on an engine to rev it high in park/neutral.