Subject	Your O2 issue is a puzzler..
Posted by	doug8867 on January 06, 2014 at 8:55 AM
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In Reply To	Need some help on a O2, Idle issue. posted by Woody75 (Denver) on January 05, 2014 at 09:44 PM
Message	To recap what you've done: You've switched out sensor, switched out ECU, yet still no o2 reading. Positive you've got continuity on both harness wiring from each O2? Regarding the car running fine if you hold throttle... the only time I've experienced those symptoms was when I had the plenum gasket not being properly seated after I pulled the plenum. This created a large vacuum leak. I had to pull the plenum again and replace and reposition the gasket and the problem was solved. Maybe you've got an air leak some place that somehow is affecting the O2 readings?
Follow Ups	Need some help on a O2, Idle issue. - Woody75 (Denver) 21:44:35 01/05/14 for the timing, check the CAS and connectors. - Medallion Man 02:40:53 01/06/14 The timing issue I saw was for the ecu timing, not CAS. - Woody75 (Denver) 09:22:18 01/06/14 Sounds like their is an issue with the idle valve, or the - ZaXxon 08:44:16 01/06/14 No air leaks, did the tests for that. - Woody75 (Denver) 09:28:42 01/06/14 Your O2 issue is a puzzler.. - doug8867 08:55:16 01/06/14 I traced all 3 wires for each O2. - Woody75 (Denver) 09:19:20 01/06/14 Thanks for the help so far guys, keep the ideas coming. (n/m) - Woody75 (Denver) 09:31:59 01/06/14 Re: Need some help on a O2, Idle issue. - hopester 13:25:57 01/06/14 Engine temp sensor is new so that's out. - Woody75 (Denver) 13:45:27 01/06/14 electrical gremlins - 300ZMang 20:07:09 01/06/14 I already tried a different ecu. No change. - Woody75 (Denver) 20:51:02 01/06/14 It sounds like you have covered the bases well - SammybTT(TN) 20:59:44 01/06/14 Regarding the idle not changing when adjusting in software.. - Evan_Wright (Ca) 21:40:12 01/06/14 Ecu is deff good. I took it out of one of my other z's. - Woody75 (Denver) 23:42:25 01/06/14 So here's what I found and did to fix it/figure it out - Woody75 (Denver) 23:56:14 01/06/14 Timing issue could be a normal ECU behaviour - zromtech 14:33:39 01/07/14
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