It sounds to me like the camshaft position sensor or the crankshaft position sensor is either losing signal or sending inaccurate signal at 2,800 rpm. If the computer senses this, it will shut down fuel flow until it receives a signal again.
Its surprising though that only the random multi misfire code is present. These two parts are the easiest and cheapest to replace at this moment, without a full diagnostic. Let's start there and see what happens.
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Thursday, March 3rd, 2011 AT 11:57 AM