Question about 2002 Mercury Grand Marquis
Its not the egr thats bad its called a D.P.F.E. sensor or a egr pressure feed back sensor. follow the 2 rubber hose from the exhaust manifold up to the intake, its a little aluminum box with a plug and 2 hoses. the new ones are plastic and brass and last a lot longer,avail aftermarket. good luck, its easy to change
Posted on Sep 04, 2009
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Posted on Jan 02, 2017
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