RT hum when the key is turned off

[Mrs Gruff]

Does Anyone know how long the hum should last after turning off the key of a2012 RT? Mine just seems to go on and on. Thank you.
Mrs Gruff
2012 RT Limited

[billybovine]

It is explained in your manual. The throttle plates are held shut for 40 minutes after the engine is shut off. This is to correct a hot start problem. So just ignore it. It's normal.

[ARtraveler]

That is a "programmed" in thing. Of course I am having a senior moment as to why.

Someone else will give the correct explanation as to "why."

[Mrs Gruff]

Thank you for the answers. I will check the manual. I guess I have had it so long and not had issues, that I forgot I had a manual. I just lost my starter and my husband changed it out as we couldn't get it to the dealer and he asked me. What do I know?? Put in the key, it starts, ride, shut off and walk away. If it doesn't start, call husband or the shop. Read manual again??? Thanks for the information.
Mrs Gruff