hi..I 96 infiniti I30 and my friend has I30 too..İ think he has a problem about transmission..(AT)

So the problem is ; when he stop vertical place (Shift on D) , and he brake release , the car slipping back..But he press the gas pedal , the is no problem about departure..The car of performance great and shifts are very soft..Whe changed tranmission oil but problem continues...

But my car doenst slipping back..Same cars but i didnt understand what is the problem..

 

He might need to adjust his idle speed.

Have a look at the 4th gen maxima forum. They are the same car in many ways.