i have a 2000 chevy tracker that has a rough idle i recently replaced the upper o2 sensor and had a tune
up new battery and hoses but on occasion when i am stopped or sitting at a light the idle is rough and
it sounds like it wants to shut off i had the alternator checked its fine and i also have problems with the
well i was having all electrical problems with my tracker like yours and stuff way worse. check your harmonic balancer, you may need new spark plugs, fuel filter, air filter, or ecm with is quite costly.i could be wrong with any of these suggestions. there is a lot of things that could be causing this. hope i might be able to help! :)
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