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it can only be one of 3 things really, bad wires (damaged like mouse chewed etc), bad injector, bad ecm.
with the help of a friend, you may try unplugging one injector at a time. when you find the injector thats not working, engine chracteristecs wont change. for exampe... if you unplug a good working injector the engine will want to stall even more.. or atleast more then the "bad" injector. your friend will have to help keep the car running.
only do this to each injector one at a time. only for a short period because your dumping a lot of unburned fuel in the exhaust. when you find the bad injector, put a test light across the two injector wires and see if it pulsates. then compare with a good injector's harness. if everything elctricaly seems the same then maybe u ahve a bad injector.
like my ASEP teacher always said: "thats the way it is... until it isnt, then it wont be".
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The dumbass that shows up randomly 10 years after selling the car.
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