Not necessarily, you still have several possibilities, the egr valve will need to be checked to see if it is stuck or dirty, intake manifold gasket may be no good, also you may have a vacuum leak somewhere near the intak manifold, also there is a possibility, that you could have a burnt valve or clogged catalytic converter, so there are many posibilities left, I would start by checkin the egr valve, , intake manifold gasket and vacuum leaks
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Thursday, March 18th, 2010 AT 1:29 PM