If the increase in RPM is happening just as you put the transmission into Park, it is because the transmission is no longer putting a load on the engine.
Turning off high current accessories can also cause the engine speed to increase slightly.
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.
Adjust your idle.
Put the engine into high RPM in neutral or park.
The rpm's are not at a high enough rate when the car is idleing to engage the clutch plate on the compressor. To get the car to blow cold in park simply give it some gas to raise the rpm's. Belinda from Texas
no, usually increase the rpm of your car, this will kick in the generator - this will supply amperage to start other car
your car must have turbo system in it.turbo starts working at a selected RPM.
Should be about 8 or 900 RPM.
No, because the tachometer actually reads the rotation of the engine, not of the wheels and therefore reads about 500 RPM while in park.
You park in the basement car park.