On higher mileage vehicles, one or more EGR orifice in the intake manifold may plug with sludge. This can cause the engine to misfire when first accelerating because too much exhaust gas is directed into the cylinders where the orifice is not plugged. Cleaning the clogged passages should correct this concern.
Engine Misfire Due to Plugged EGR Orifice on Mercury Monterey
Average mileage: 112,093 (72,000–195,000)
15 people reported this problem
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Viewing 1 - 5 of 5 problem details
EGR is plug how would i go about cleaning it and what with
2005 Mercury Monterey 129,000 mi, Visitor
When I am slowing down or stop it shutters and stalls. When I was driving it bucked and jumped a few times.
2004 Mercury Monterey 115,000 mi, Visitor
EGR Valve replaced.
2004 Mercury Monterey 102,000 mi, Visitor
same problem at accelerating, seems like its misfiring