I had some issues about 2 weeks ago where at about 3500 rpm it would start bucking and dieing out as long as i held the gas. RReplaced o2 sensors and it seamed to clear it up. On the way to work today it started again. Much worse. Now under any heavy throttle after 2500 rpm it stops accelerating completly. Wont even pull hard enough to shift. Let it cool down and it runs great untill it gets back up to operating temp.then it starts again. Fuel pressure was fine last weekend when i checked. Took it to the shop and its trowing no codes. Mass air flow sensore SHOULD be good its 3 weeks old. As is i cant even safely pass a slow car at 45mph. As soon as it downshifts it losses all power and bucks. Also the fuel pump is less than 6 months old. Filter is new as of last week. ....
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