hey guys new here and have an 2002 maxima with 126xxx. First start up it runs good. I go and hit the pedal to the metal and it revs high and sounds like it's over reving without getting close to the red. A while before I parked it tinkering it sometimes at a dead stop to acceleration it would fall and die out. I've done fluids, plugs checked timing chain, cleaners through the motor and cleaned the MAF sensor. Any pin point ideas? I hate to pay a mechanic for what I can do that I'm over looking.