The only things that I question at this point is the variation in fuel pressure. You said it was only a 1 PSI variation, but you also mentioned that is when the car misses. Now I'm questioning the crank sensor and the injectors. Has the check engine ever come on when it misses? If so, has it ever given a random missfire on a specific cylender that we can check? The fuel pressure variation could be from an injector problem too.
Let me know. This is a tough one, but we'll figure it out.
Friday, February 5th, 2010 AT 6:31 PM