put new ford plugs and wires on it, and try the imrc cleaning some people have discussed on here. I would recommend using brake cleaner (or something similar), get where you can see the imrc linkage and squirt the cleaner into the intake stream through a hose downstream of the throttle body (for maximum vacuum). operate the throttle by hand above and below the imrc threshold (about 3600 rpm) to exercise the imrc while spraying. repeat until the can is empty. Do it on a warm engine, and don't give it too big a drink at one time - it'll smother it out. Clear any codes that may get set and drive it again.
