1992 5.3 Marelli - Stall after warming up and odor

[sbobev (Steve)]

@Geekay

a. Fuel ECU vacuum pipe is connected to the center of the cross pipe at the rear of the intake manifolds (in front of firewall).
b. I believe the narrow red pipe at the rear of the A bank is connected to the Ignition ECU.

The 6.0L is slightly different with regard to a.) but b.) is the same – the thin red tubing goes to the passenger side footwell, where the Marelli ECU is.