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my old GL did this about once a year. probably whats going on is when its running this way its missfiring. i would try putting some seafoam through your fuel tank first. maybe you have some carbon on the valves. i never dug into my issue only becuase it litteraly happend twice to me while i owned it.
try some seam foam in the fuel
get the cel read. probably a P0300. maybe a nother one.
how many miles on it? if its near or over 100k and hasnt already been done so.... its time for spark plugs.
hows the fuel filter and air filter? these can have an effect on your engine.
oh and your car has two 02 sensors. one for fuel trim adjustment and the other to tell the ecm how well your cat is working.
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The dumbass that shows up randomly 10 years after selling the car.
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