Subject	Just reading the Exterra Manual in Forum ClubExterra
Posted by	Cjw3 on May 07, 2017 at 11:00 AM
	This message has been viewed 382 times.
In Reply To	Check for cracks in the manifold, inspect the cats. (n/m) posted by Bernie (NoVA) on May 06, 2017 at 10:42 PM
Message	Reading in the On Line FSM, it says the Downstream O2 Sensor affects the Mixture as well. From that I can gather that the Upstream ( a Wideband ) will be running the Mixture a little rich to get the Cat to Lite.. then the Downstream ( a Narrowband ) will see the mixture start going lean as the Cat Lites.. then the 'System is Checked' Just a Theory on my part, but I'll replace the Upstream Cat and see.. Note the Pre-Cat is the One with the Up and Down Stream O2 Sensors.. the main cat has no O2 Checking.. Thanks Bernie.. Cj
Follow Ups	NZR Need a Good VG40 Forum for my 06 Exterra - Cjw3 21:11:57 05/06/17 ClubFrontier and ClubXterra have been decent for me. (n/m) - Bernie (NoVA) 21:43:57 05/06/17 Sounds like the O2 sensor might be shot or the wiring to it. - MixManMash 21:44:49 05/06/17 One thing - did you reset the ECU? That is why you would - MixManMash 21:49:11 05/06/17 Re: One thing - did you reset the ECU? That is why you would - Cjw3 22:21:00 05/06/17 Check for cracks in the manifold, inspect the cats. (n/m) - Bernie (NoVA) 22:42:57 05/06/17 Just reading the Exterra Manual in Forum ClubExterra - Cjw3 11:00:01 05/07/17 Nissan does not consider the rear cat an actual cat. - Bernie (NoVA) 14:46:31 05/07/17
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