LOW POWER AND LOSES POWER

2000 Mercury Marquis

Tiny

charynn77

February, 21, 2009 AT 4:11 PM

Engine Performance problem
2000 Mercury Marquis V8 Front Wheel Drive Automatic 48,000 miles

My car is low in power and I cant drive it past 55 mph without it feeling like its pushing it too much. It eventually slowly lost power on the highway and I had to pull over and when I would put my foot on the gas it would make a loud rumbling noise. We had the catalatic converters checked and they are fine ad two machanices cant find anything wrong. It still has low power.

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