Rev sound when turning ignition off

[TheChiefJaguar]

18 Dbl cab
I’ve noticed a slight revving sound, almost metallic, when turning the ignition to the off position. It’s not the same type of sound you’d hear if you tried to start an already running engine.
Any thoughts?

 

[whippersnapper02]

18 Dbl cab
I’ve noticed a slight revving sound, almost metallic, when turning the ignition to the off position. It’s not the same type of sound you’d hear if you tried to start an already running engine.
Any thoughts?

Smog pump.

 

[OR17TRD]

Smog pump.

Contact the EPA

 

[whippersnapper02]

Contact the EPA

I'm sure CARB had a hand in it too.

 

[OR17TRD]

I'm sure CARB had a hand in it too.

California has its own air quality board haha

 

[Bogunn]

California has its own air quality board haha

For real?!? SMH