No awd at idle
 

After fixing my exhaust yesterday at my buddy's shop I told him I want to try something.. We lifted the car a couple feet, I started it, put it in D, and only the front wheels spun. He told me something about a viscous differential, how maybe fluid has to build up before awd engagement and if the fluid is low it won't engage until giving it gas..? He told me he really didn't know so I'm asking on here now. Is this totally wrong?

AWD in the 4EAT is electronic...not viscous.

The AWD system takes input from around 10 sources (like TPS, VSS, etc) before it decides to engage the rear wheels.

Cool thanks.

If you stopped a wheel it might have done something

good thinking, I should have messed with the wheels.. well maybe some other time.