My 97 malibus tachometer will not work then wen it starts to work the engine starts to hesitate and dies on me even going down the road. Sometimes it starts back and sometimes it don't. I had test ran and trouble codes p0300,p0336,p0102,p0341 show up. I've replaced the crankshaft sensor put new plugs and wires new pcv valve and lines to the valve and new fuel filter and the problem still remains