DeVille V8-350 5.7L DSL VIN N FI (1982)
Exhaust Gas Recirculation: Description and Operation
EGR Response Vacuum Reducer Valve (EGR-RVR)
The Response Vacuum Reducer Valve is located in the vacuum line between the torque converter clutch solenoid and the vacuum regulator valve
and allows the EGR valve to change position quickly as throttle position is changed.