Car Problem Reports

Mercury Mountaineer Vacuum leak from intake manifold O-ring gaskets

 
Mercury Mountaineer Problem
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Model Years Affected: 1998, 1999, 2000, 2001, 2002, 2003, 2005

Engines Affected: 4.0L V6, 4.0L V6 SOHC, 4.6L V8, 5.0L V8

Average Mileage: 155,902 mi (101,124 mi - 235,000 mi)

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The intake manifold O-ring gaskets commonly leak, causing stalling and poor idle quality; the Check Engine Light will illuminate.

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