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Failed emission testing came back with P0446 went and had diagnostic check out the said I need a new charcoal canister and purge valve.
2 Replies
recomend fuel injection cleaner and gunk out in the engine. Dont drive with Gunk out, but run the engine with this for 15 mintunes after its already warm. Then change the oil again and it will clean out the sludge. Also you can add no smoke additive with fresh oil.
*2003 Pontiac Montana 3.4L* > Fuel & Emissions: Canister Purge Valve > $ 35.99 /ea Part Number: 6001626 Product Line: NAPA Solutions Fuel Vapor Canister > $ 169.00 /ea Part Number: 229967 Product Line: NAPA Echlin Fuel System