2006 ford five hundred high rpm low acceleration. Replaced items: spark plugs, oil & filter, coil pack (#3 cylinder), & EGR Valve. Note: exhaust has leak in the exhaust flex pipe.
Started as coil pack (#3 cylinder ), changed
all spark plugs, then had vacuum leak, and
replaced EGR valve, now have exhaust leak
at the flex pipe ordered part (still needs
installed). Acceleration seems to be getting
weeker and weeker every day. All within
last 7 days 150 miles. Problem occurs
intown and highway.