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1981
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Riviera Base, 5.7L Eng VIN N
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Diesel Exhaust Gas RECIRCULATION
Diesel Exhaust Gas RECIRCULATION
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Description
Operation
Modulated (Internal) EGR System (Federal Vehicles)
Throttle Position Modified Orifice (External) EGR System (CALIF. Vehicles)
Trouble Shooting
EGR Valve Will Not Open
Heavy Smoke On Acceleration EGR Valve Will Not Close
EGR Valve Closes Early
Smoke On Medium Acceleration EGR Valve Closes Late (CALIF. Models)
Loss Of Performance, Smokey Exhaust