Hi again, My car is a 55 registered 2005. I had gathered that this P0001 code is a bit of a red herring. I'll seek out a better diagnosis hoping that will help narrow things down a bit. On this last 'limp' episode it happened on the way out to dinner with friends. We diverted to the nearest restaurant we could walk to while the car gathered it's senses but late in the evening it still wouldn't go properly. We were towed home. The next morning the situation was still the same so I thought I would get someone in the drivers seat to try to rev. over 3000 while I pumped the primer bulb. The problem cleared while I was demonstrating what I wanted them to do so I didn't learn anything there. I have read of many owners with a similar problem getting main agent diagnosis followed by hefty repair costs only to find the problem still returned a while later. I'll check out the thread you mentioned, Thanks.