1999 Mercury Cougar Would Cause Rev Over 4000 Rpms 5 Speed V6

1999 MERCURY COUGAR
144,000 MILES
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What would cause it to not rev over 4000. Rpms its a 5 speed v6
Dec 22, 2012 at 9:36 AM
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ASEMASTER6371
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could be clogged cat converters.

Roy
Dec 22, 2012 at 2:51 PM
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