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Home >> Buick >> 1980 >> Skyhawk Base, Automatic Trans >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Exhaust Gas RECIRCULATION (EGR) System >> Trouble Shooting >> Rough Idle And Stalling
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Rough Idle And Stalling

Hoses routed improperly. Leaking EGR valve, loose attaching bolts or failed gasket. Thermal control valve or vacuum switch malfunctioning. Improper vacuum to EGR valve.

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