Everytime I start the vehicle it starts up fine and everything but what's going on is it's erratically firing it seems like a misfire but the plugs the wires distributor everything's brand new it's a completely just rebuilt motor I haven't tried replacing the mass airflow sensor or anything like that yet and was hoping that you would be able to give me a roundabout idea of what I need to look at thank you
My car has 120000 miles.
My car has an automatic transmission.
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