Catalytic converter

[John Kuntz]

If the check light engine comes on and you get code P0420 Catalyst efficiency below threshold Bank 1, does that mean that you need to replace the Catalytic converter? I know obvious answer....I replced the plugs and O2 sensors and it has 148,000 miles on it. Any ideas??
Thanks
john

[Disco Mike]

At your mileage replace them both at your local muffler shop. You didn't mention, have you replaced your plug wires?

[John Kuntz]

Thank you
I have replaced the plug wires about 40,000 miles ago. None of the local muffler shops will put in a catalytic converter (universal type) and two of them Midas and Monroe couldnt even find the Y Pipe through their suppliers with the two already on it. So I figured I could order the complete Y pipe with the two cats online and will just put it in. maybe it is a function of my geographical location...

[ema]

At the rate your car's going, you should really change both. Well, here, try looking up at this catalytic converter site for replacements.

[treasurecoastdisco]

try europartsdirect, roversnorth, rockauto and roverland.com these are some of the sites I have found with the best prices on alot of Disco stuff just be sure to check one against the other. I have found them brand new for around 450-500 bucks complete with y pipe