what would make my car misfire intermitenly while driving and also when ideling on 2005 Chrysler 300

has had new spark plugs and wires and a egr valve replaced

by in Charlotte, MI on July 23, 2012
2 answers
ANSWER by on July 23, 2012
Was the misfire diagnosed before the parts changed ? If so , what cyl(s) had misfire codes? Why was the EGR valve replaced?
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ANSWER by on July 24, 2012
seek a diag and have codes read and do not drive this could cause eng damage
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