Wes Weems wrote:
> Oh yeah, one last thing, my dak is a 3.9l v6, and it has o2 sensors
> before and after the cat... Somone said that replacing the rear o2
> doesn't make a diff, and that if it went bad, the check engine light
> would ocme on, but wouldn't change running conditions, is that correct?
The post-cat O2 sensor, as far as I know, is used by OBD-II to monitor
the health of the cat. It's not used for tuning engine performance;
that's the pre-cat sensor's job.
-- -andy andylevy@yahoo.com Maintainer, DML FAQ - http://www.dakota-truck.net/faq/ http://home.twcny.rr.com/andylevy/dakota/ '99 CC 4x4 318 auto
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