After slamming on the brakes to test brakes my car started to loose power and hesitate upon acceleration, the situation got worse until I adjusted a coil wire, which didn't really fix it. The car was running fine beforehand, so I am confused. Recently the vacum hoses were changed as was the fuel filter. The car starts and for the most part idles ok, I am able to rev it up while in park and it sounds normal. One I shift into drive with my foot on the brake you really notice a drastic change in idle attitude. After travelling less than a mile it looses power until it is a pain to drive. Help.