Square plastic part on the end of the manifold.
The short runner valve is the square item sticking out of the end of the intake manifold. The code refers to either a failed actuator/position sensor or a wiring problem from the pcm to sensor.
is it on the side of the intake
They are inside the intake manifold.
Trouble code P1004 means: Short Runner Valve Control Performance
It is the short runner Valve actuator part#57-154. Replace it and the code is fixed
Yes, but it is part of the egr valve.
No. A 1996 does not have egr.
It doesn't have one.
P1004-SHORT RUNNER VALVE CONTROL PERFORMANCE The short runner valve actuator is bolted on the end of the intake manifold.
Dodge didn't use EGR on the Magnum engines, it wasn't necessary.
In the intake plenumn.
Finding the intake manifold runner control on a Dodge Avenger is easy. It is located near the engine.