Midsize LTD L4-140 2.3L SOHC (1986)
Vacuum Amplifier: Description and Operation
The EGR Venturi Vacuum Amplifier (Figs. 1 and 2) uses a relatively weak venturi vacuum to control a manifold vacuum signal to operate the EGR
valve. It contains a check valve and a relief valve that opens whenever the venturi vacuum signal is equal to or greater than manifold vacuum
