I have a Lexus sc400 with about 1000 miles.recently I notice problem with going over 40mph on the free way an riding a little roughly I recently replace the sparks an wires still notice the problem.next day I wasn't able to pick up little speed if any rough idle when I first start it an it also stalls an hesitate when I try to pic up speed got a diagnostic test cold 31 and 25 replaced mass flow air sensor steel notice hesitation lost power rough idling an motor stalling any suggestions about T PS sensor any feedback will be helpful Thanks
