acceleration

I've read that the Toyota Matrix and Pontiac Vibe lack accelerating power and have found this to be the case with my 2003 Pontiac Vibe (1.8L engine). I don't know if my bad catalytic converter, which I don't plan on spending $800to fix, is part of the issue, but is there anything that can be...

while me and my g/f were driving her battery light came on and she lost complete acceleration....we stopped the car, turned it off for a few mins, started it back up, and the battery light went away and everything was back to normal. about 10-15 mins later it happened again......anybody got any...

We suddenly lost acceleration while going uphill, it sounds bogged down. while driving on flat land the problem is intermittent, however while trying to go uphill it has very little power. We have changed the plugs/boots, the plastic casing and the fuel filter as well as added fuel injector...