Hi all, have an issue with the rolla, will start and idle, but as soon as you put any revs on it, it gets " chocked" and almost does. Has new plugs, new fuel filter, exhaust isn't blocked, tried a new map sensor, new air filter, just won't go past 2k. Left me stranded on my way to work yesterday. Couldn't even drive it onto a car trailer as I said it chocked itself one you aply power. My mechanic doesn't seem to think its the fuel pump, but he has no idea what the problem is. Help please?!!