Chris, Your problem sounds similar to one I experienced just this time last year. I had all the parts replaced that you mentioned as well. The car would idle perfectly, but it just would not accelerate, only spit and sputter. It would be wise to check all fuel hoses starting at the fuel tank and working backwards towards the engine. By chance does the fuel pump moan or make funny sounds? My problem turned out to be a collapsed fuel hose, specifically the one on the input side of the accumulator, which I had just replaced a month or so before the problem started. And even if it is brand new, like it was in my case, it could still be collapsed. Once I had a clean path for the fuel to travel, no more problems. And if you have already done this, just disregard my suggestion b/c I have no other ideas. If you have any questions, feel free to e-mail me personally. Good luck. Regards, Darren Decker VIN 5000 Iznodmad(at)aol.com