Mechanics

MERCURY COUGAR CATALYTIC CONVERTER PROBLEM

1987 Mercury Cougar • 142,000 miles

I was driving on the freeway at 65mph when it just lost power all of a sudden. I can start it, but it barely runs, extremely rough and shakes hard and when you give it gas it just runs even rougher and power loss untll it dies
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Gjoelh
December 2, 2012.




Check the exhaust system for restriction-Catalytic Converter could be clogged-up-start here and also go to this walk thru link: http://www.2carpros.com/articles/engine-has-low-power-output

Rasmataz
Dec 3, 2012.
Thanks,
i checked for restriction and it sems to be ok. I'll still at a loss because of how it happened so sudden, going from running ok at 70 mph and then just shutdown. No sound or noise, but like something went. I coasted to the side of the road. And like I said, it will turn over and start but idles rough and won't stay running
AD

Tiny
Gjoelh
Dec 4, 2012.
Fuel pump could be failing -check the fuel pressure if its within specs before and after the fuel filter

Rasmataz
Dec 4, 2012.

AD