Jack,
Maybe (pure speculation) the ones at the head pipes are used as misfire
sensors? If so, maybe some analog electronics could be added to "adjust"
their response time and reduce/eliminate misfire sensing due to a lumpy
bumpstick installation?? This is beginning to sound like work...
Bruce
At 02:57 PM 7/22/98 -0400, you wrote:
>At 10:57 AM 7/22/1998 -0700, you wrote:
>>I found FOUR O2 sensors on my R/T.
>>
>>One after each header.
>>One before AND after the cat (ODB-II checking if your cat is working?)
>
>Man , I knew there were two around the cat , but two more ?
>
>SHEESH ! Talk about overkill !
>
>I think it's like the cup-holder wars .
>
>Whatever vehicle you make , make it with way too many cup-holders .
>
>The R/T (and I am sure the regular Daks) has five of those !
>
>I can understand the two O2 sensors around the cat , the first to manage
>the injectors and the second to keep an eye on the cat itself , but I still
>don't know why you need the other two ?
>
>
>
>
>
>Jack Hilton
>
>Black '98 R/T Club Cab
>
>http://www.mindspring.com/~hemi/jbd1.html
>
>
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