tundra08 Posted May 20, 2015 Share Posted May 20, 2015 Can anyone tell me how many o2 sensors are on this car Engine type EJ259CXFWL. Thanks for your time Link to comment Share on other sites More sharing options...
lstevens76 Posted May 20, 2015 Share Posted May 20, 2015 Should be just 2. An upstream and downstream. Link to comment Share on other sites More sharing options...
ocei77 Posted May 20, 2015 Share Posted May 20, 2015 You probably have 5! The 04 and early 05 was the first pzev engine for the CA emissions states. As such they borrowed the header design from the H6 engine. You should have two equal length headers each with their own cat and a cat after the Y. The first 2 cats have 2 O2 sensors and the 3rd one has 1. O. Link to comment Share on other sites More sharing options...
lstevens76 Posted May 20, 2015 Share Posted May 20, 2015 Wow, ok didn't realize they had gone that far. Link to comment Share on other sites More sharing options...
Fairtax4me Posted May 20, 2015 Share Posted May 20, 2015 Crawl under and look. They're easy to find. Link to comment Share on other sites More sharing options...
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