Question about 1999 Mercury Cougar
I have a 99 mercury cougar it is fairly cold and the when i go to start the car in teh morning it starts fine and idols fine but about 5 min later its starts to chug and eventually idols down till it shuts off. also when i get to a stop sign it will start chugging and idoling down. the check engine light hase been on i got a p0420 code from it and dont no wat to fix. anyone no wat the problem could be
Hello, here is a thread I found on this site with from what it looks like, the same problem(with an added solution) that you have. http://www.fixya.com/cars/t1576683-1999_cougar_diagnostic_code_p0430_p0420
Posted on Jan 30, 2009
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Posted on Jan 02, 2017
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