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Originally Posted by jrichker 4.) Bad O2 sensors or bad or missing O2 sensor ground - replace o2 sensors and check ground. The ground comes out of the fuel injection wiring harness & is a orange wire with a ring terminal on it |
Sometimes you can clean the O2 sensors instead of replacing them. I was getting a check engine light in my Jeep, so I was testing it w/ a voltmeter and a torch, but I guess I ended up burning the junk off and fixing the problem
Anyway, just an idea. However, since the O2's aren't used until open loop, they would only cause idle issues on a warm start, sitting at lights, etc right?