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post #5 of (permalink) Old 12-24-2005
rommey
 
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Joined: Dec 2005
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Quote:
Originally Posted by kscoyote
I've never had a set of o2 sensors go bad that affected idle and I've owned 4 fords with a combined 700000 miles.

Only once have a set gone bad, and all that happened was the CEL came on. It didn't affect idle at all.
Since the O2 sensors aren't that hard to take out, I'd give them a good cleaning. It can't hurt and may send a better reading to your computer. We do it quite a bit in our Ford shop. No kidding they really can effect your idle. I'm looking at one I just replaced. I wasn't able to clean it up enough to get it to work properly so I replaced it with a new one. Difference between night and day.
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