to me it sounds like your map sensor is going out, you might want to check that.
Because it's in park.
You do this by pouring transmission fluid into the tube that your transmission dipstick is in. To check for fluid level, drive the car for a few miles to make sure everything is warmed up, then park on a level spot, with the engine running, put the transmission in drive, then in reverse, then in park. With the engine still running, remove the dipstick and wipe it clean, and reinsert it, then remove it again and check the fluid level.
take it to macanic
when you take the car out of drive and put in park the drive mechanism or transmission does not put as much load on the engine so it runs faster.
In park, the transmission is in neutral: very little "load" on the engine. In drive, the engine is loaded somewhat by being in gear. Therefore, any engine performance issues will be exaggerated. Of coarse, engine performance issues could mean just about anything!
engine running in park. when warm it should be between the "hot" and "cool" markings on the dipstick.
Put your foot on the brake.
Does it shift out of Park?If not check stop light fuse - shift interlock and stop lights are a common circuit If it does shift out of Park then shift linkage may need adjustment Try turning key to first position (Unlock) without engine running and the shift to neutral to start vehicle and then shift to Drive
automatic....engine warm and running while in park, standard, engine off. But this is covered in your owner's manual
Yes, idling in park.
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.
Put your foot on the brake. Most/all newer cars have an interlock that keeps you from shifting from park to drive without your foot on the brake. Sometimes if you park the car on a hill, it will be difficult to move the shifter out of park. That's why some people use the emergency brake before putting the car into park when parking on a hill or incline (like a driveway)