I decided to today I needed to go ahead and replace one of my O2 sensors but instead of ordering parts and waiting a week I just ran over to Auto Zone and got me a Bosch sensor... big mistake. After the motor warmed up I noticed that the sensor was only reading from 300-400 mV This is the exact reason I replaced the last on which was AC Delco and lasted over a year.. this Bosch pos lasted about 30 seconds. wft? Im getting my $50 back dammit!

 

same one i got and mine is reading the same. i checked all connections and everything is ok. i was wandering if it could be the sensor also.

 

well i dunno about the bosh o2 sensor, the ones ive used havent given me any trouble, but really, even the ac delco should have last way more then a year, more like another 100,000 miles at least

 

you know who makes O2 sensor's for Ford? Bosch, and Fords are supposed to have really tight calibrations too. Now the universal 02 sensors are junk, I never understood how those even seemed like a good idea.

 

Heh, i borrowed a bosch from a friend because my 02 extensions arent here yet, and now my car runs like complete sh*t. I dont see why they dont work but it seems to be the consensus that they cause problems.