Does not accelerate properly and has issues shifting. transmission is auto with slapshift option. recently in approx. 20 mph accident. damage to front bumper, hood, headlight and grille. A/c pump is busted. Radiator is fine. car does NOT overheat or stall. No leaking fluids that i know of. drove fine for first 5 or 6 days after accident. Now experiencing problems with acceleration and shifting. just curious what this is cause by. I imagine that it would be from a snag in my fuel pump or something along those lines.