EGR Vacuum Regulator Control System
This system is used on most 1.6L engine applications. System consists of 3 components, a vacuum regulator, EGR valve and a flow control orifice. In EFI models, the control chamber pickup is in the EGR tube and the flow control orifice is integral with the upstream EGR tube inlet connector. On all others the control chamber pickup and orifice are integral with the EGR valve. The regulator receives a vacuum signal to modulate EGR valve using 2 backpressure inlets. One input is standard vehicle backpressure and the other is the backpressure downstream of the flow control orifice.