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What would make a 89 Pontiac 6000 stall while idling and the gas fumes are terrible but when you turn on ac it doesn't stall but the fumes are still very bad?
Wiki User
∙ 16y ago
I would go to a GM dealer parts dept and buy "top engine cleaner". Follow the directions to clean the intake runners and intake valves, use the entire can , all at once on a HOT engine. Then buy a can of Jectron fuel injection cleaner. This is made by Lubro Moly. Foreign car parts places generally carry it. Fill the car tank and dump the can into the tank. Jectron does an excellent job cleaning the injection system. FLAPS (friendly local ayto parts stores) may also carry Jectron but not here in Phoenix. Run tank down to near empty and re-fill. Now change the oil since all this cleaning has put junk into the oil that you don't want in the engine. It sounds like the intake system is crudded up and by rennuning the AC system the idle is bumped up so the unit can idle. Let us know how you make out.
Wiki User
∙ 16y ago
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Your 1969 Pontiac Firebird leaks fumes from the fuel system you have replace the gas cap and that did not work The carb on it is fine Any thoughts?
I went from the original quadrajet to a Holly and it solved that problem... Are you sure it is not the carb?
