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Home >> Chevrolet >> 1981 >> Chevette Base, 2D Hatchback, 1.8L Eng VIN D, Standard Trans >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Air Injection Reactor System >> Trouble Shooting >> Poor Gas Mileage
July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Poor Gas Mileage

Air pump output not shifting to catalytic converter(s) upon signal from TVS. Faulty electrical and/or vacuum circuits.