Hey folks, I am trying to change the O2 sensor in my '90 Trooper w/2.8, but I can't locate it. I assume it is accessed from underneath the vehicle and I have had it on jack stands for the last hour trying to find it, but I can't. Help!

drivers' side, forward of catalytic converter. has 1 wire coming off of it.

Should be fairly easy to find. Should be the only electronic device connected to the exaust.

Thanks guys. Once I new where to look, it was no problem. I just learned a valuable lesson...don't trust the photos in the Haynes repair manual, they may or may not be accurate.

heh... yeah they are pretty random. The pictures of front brakes in the Haynes Montero book are from a mazda pickup truck, for example.

Better to have the book than to have no book at all - but the best books are produced by isuzu and can sometimes be bought on ebay for $30-100 bucks. I have the isuzu 1990 books: complete vehicle, transmission, electrical troubleshooting, and transmission supplement. Copyright law prevents me from scanning pages and sending them to people but I've been known to jaywalk from time to time. <img src="/forums/images/graemlins/kewl.gif" alt="" /> <img src="/forums/images/graemlins/cheers.gif" alt="" />