I was having a fuel problem & found out with the tank 3/4 full the pump was pumping air. A new fuel pump fixed that. So now, when I switch the transmission to reverse, if the RPM doesn't go up, it will stall standing still. Any ideas? Going into drive; 1st or 2nd doesn't cause it to stall. Also, no more bank 1 & 2 lean messages.

MAF & throttle plate already cleaned.

 

Low transmission fluid can cause this.

 

Just cleaned the IAC & reset the computer by pulling the negative battery cable and jumping to the positive. Idle speed & IAC % seems much better.