Check Engine Code P0420
Super Moderator
Joined: May 2006
Posts: 18,398
From: Wisconsin
RE: Check Engine Code P0420
I don't even start without a complete set of new nuts & bolts. They ALWAYS break. So I've given up trying to loosen them with penetrant. If I can get a socket on, it just twist until the bolts break. Often a sawzall is easier.
Knowing you already have a new set of nuts & bolts = priceless.
Knowing you already have a new set of nuts & bolts = priceless.
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