Catalytic converter problems

Catalytic converter: Equipment in the exhaust system that transforms the contaminant gases radiated by the car.
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Put after market catalytic converters

Chrysler Town and Country 2014 Town and country  138000 miles
I put aftermarket catalytic converters with NGK Oxygen sensors still reading check engine light catalytic converter
Nancy from United States a month ago  
NA

Catalytic converter

Chrysler Town and Country 2009 3.8 177777 miles
Bogs down badly & stalls out/loss of power
Flyin Brian from United States 2 years ago  
FL
4 reports 

Jerking motion while driving - occasionally

Chrysler Town and Country 2012 Touring 248000 miles
While driving, mainly slow speeds (40 and under), the car jerks like there is a transmission problem but it is not shifting at the time.
One engine code - a possible inefficient catalytic converter, but that has been on there for a while.
Found this site, thought I would ask. Everything else is great, no problems. The alternator died just recently and was replaced, and the front motor mount was found to be cracked and was replaced.
AVDCar from United States 9 years ago  
AV
13 reports 
ed Trask from United States 4 years ago
My 2015 T/C does the same thing. What causes this and what is the possible. Cure
Sheena from United States 2 years ago
Same hard shifting here.
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