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Home >> Chevrolet >> 1981 >> Chevette Scooter, Automatic Trans, Trans Mfr CD 180/MD3 >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Air Injection Reactor System >> Trouble Shooting >> Poor Gas Mileage

Poor Gas Mileage

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

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