So I just noticed today that while my car is idling, if I push the window switch whether it be up or down, my RPMS drop. They drop until I let go of the window switch. Anyone else noticed this? I know that electrical stuff can draw power but it shouldn't be enough to drop the RPMs just from the window switch. My car has been taking longer to start lately and i'm wondering if this could possible be related.

 

My car does the same thing and so does my buddies, my battery is'nt the greatest but I think its a normal thing.

 

thanks for the reply that makes me feel better

 

mine does it too.

 

same here

 

Count me in as well

 

This is normal, then you activate the window motor and the window is not moving it will draw more current than if the windows was moving. Neither the case when current the drawn it puts a load on the engine (from the alternator) and thus your RPM drops. I don't think our ecu compensates for load then the car is in idle.