altima loss power

1995 NISSAN ALTIMA
230,000 MILES
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B13SENTRA4201
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my wife has a 95 altima gxe. driving home the other night i noticed when i put it in gear it staggers and shakes. and has little power going up hills. it will drive but has no power on hills. ive replaced the coil pack, plugs, wires, fuel filter, and mass airflow. my wife really loves this car so any ideas? we need to get it running. one cars not cutting it. please help.
Jan 12, 2012 at 12:54 PM
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RASMATAZ
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Catalytic Converter could be clogged-Get a backpressure test on the exhaust system

Go to this link for more information: https://www.2carpros.com/articles/engine-has-low-power-output
Jan 12, 2012 at 2:47 PM
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B13SENTRA4201
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Catalytic converter has holes in it. was going to replace. there is no exhaust from the cat back.
Jan 12, 2012 at 3:22 PM
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