Hot Rod Forum : Hotrodders Bulletin Board - View Single Post - s10 with gutted cat, bad mpgs.. CEL on, Limp home mode from downstream cat?
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Old 08-29-2012, 09:57 PM
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Thanks for the reply. The cat was gutted before I got the truck, it looks like it is still there only is completely hollow. I have no idea how that is even possible because running a pipe through there just makes a pipe sized hole right? I discovered this after changing the down pipe because the flexi part of it had a leak.

As for the steel wool comment, the steel wool is to be pushed into the spark plug anti-fouler and the o2 sensor screwed into that, the anti foler screwed into the pipe. I read this on some hyper miler websites.. Because several different sites suggested it, I assumed it was a known thing.

Can the downstream o2 sensor keep it from running in closed loop?

I recently replaced the battery and the check engine light came on about forty miles later..
Thanks, Austin
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