2000 2.4 grand am misfire

[moparmikefloyd]

2000 grand am 2.4 58,000 miles automatic trans. giving a code of PO300 RANDOM CYLINDER MISFIRE DETECTED. the car will not go over 20 mph. engine will not rev over 2400 rpm. changed the temp sensor, changed fuel filter which was totally plugged, cleared the code , it came right back.

[urweak]

is the engine shaking really bad? if so probably your ignition module.

[moparmikefloyd]

the engine runs smooth as glass till 2000-2400, then bogs like running out of fuel totally, if you floor it it will die,

[urweak]

my car bogs at time, i just rev the car to like 4000rpm and that usally helps.

[moparmikefloyd]

checked the fuel pressure, it was right around 50 or 55 which i think is good, loosened the exhaust where the pipe meets the header, ran great, confirmed converter plugged, it has a 80,000 mile free replacement at the gm dealer which lets this car slide right in