Question about 2003 Honda CR-V
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Posted on Jan 02, 2017
misfiring can cause a P0420 code.
I would recommend a set of honda plug wires and plugs if the P0420 code returns.
I have used bolt in aftermarket bolt in catalytic converters but don't remember the brand name they fit ok and i have had 1 or 2 return with a P0420 code out of about 20. I have never replaced the oxygen sensor on a civic like yours.
I always fix the misfire problems, reset the computer, and have the customer drive it and see if the code p0420 returns. 50% don't have the P420 code return. drive it and see what happens and go from there.
Posted on Jan 06, 2009
I would send the car for a smoke test for the emissions leak...Find out where the leak is comming from..Repair it..Reset the codes, then do a drive cycle and see what happens...
Posted on Feb 19, 2010
First thing I'd try is some "heet" or similar additive in tank to remove moisture, then refill with gas from a busy station & drive it for a while and see what happens.
Posted on Jan 02, 2009
CAN'T TELL U IF THE NOISE IS FROM THE CONVERTER BUT THEY DO COME APART AND CAN SOUND THAT WAY.AN AFTERMARKET CONVERTER WOULD BE FINE AS LONG AS IT IS FOR SALE IN YOUR STATE(NO CALI)
Posted on May 04, 2009
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