Since you have done all that, I would also replace the EHA valve. Shop on Ebay and you should be able to get from one place that sells them for 217.00. Solved all of my start, cold and warm idle issues. After install, I had to readjust air/fuel mixture about 3/4 clockwise in my car but now it is perfect. Also, if you haven't gotten new plugs, get the copper non-resistor (usually cheap) style...this car runs better with these plugs vs. the new fancy ones. I learned from experience.