Problem Reports
Mercury Cougar
Report: Check Engine Light on Due to Clogged EGR Passage in Intake Manifold
Mercury Cougar Problem
Model Years Affected: 2000, 2001, 2002
Exhaust & Emissions Affected: 2.5L V6
Average Mileage: 169,666 mi (154,000 mi - 185,000 mi)
Verified
The Check Engine Light can illuminate with codes due to the lack of EGR (exhaust gas recirculation) flow caused by the intake manifold passage plugging up with carbon and oil. The EGR valve has to be removed and the passage cleaned thoroughly. Partial restriction of this passage can cause Smog test failures for the NOx emissions without causing a drivability symptom.
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Report #1Visitor, 2001 Mercury Cougar, 154,000 mi
Insufficient EGR flow upon diagnostics.
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Report #2Visitor, 2001 Mercury Cougar
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Report #3Visitor, 2001 Mercury Cougar, 170,000 mi
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Report #4Visitor, 2002 Mercury Cougar
EGR Valve Blown/hole in the valve
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Report #5astra1, 2000 Mercury Cougar, 185,000 mi
RookieNot enough flow in EGR
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