silentblackhat

I read thing on people saying "dont replace the oxygen sensor till it throws a code". which might be partly true but a new one(especially with my 99 civic that has 93K miles on it now) would be good because, it has to be chucked full of carbom and a new one would give better response.

I did change my primary sensor with a Denso universal sensor and it seems to be working great. I have another Denso universal just sitting in my room(brand new)and was wondering if i should replace my 2nd sensor(the one in the cat)? or should i wait till that one throws a code? The first one was solved just by getting a new sensor

Kendall

I bought my hatch with 240,000 miles on it and it still had the original O2 sensor and it still worked great. The thing you read is pretty much correct, you don't have to replace it until it starts throwing a code.

silentblackhat

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Kendall &raquo;</TD></TR><TR><TD CLASS="quote">The thing you read is pretty much correct, you don't have to replace it until it starts throwing a code.</TD></TR></TABLE>
Wont it be more efficient if its newer?

lemon_juice

if it aint broke, dont fix it