Subject	O2 sensor issues
Posted by	Barry (NJ) on July 31, 2016 at 10:23 PM
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Message	A few weeks ago my Z started having intermittent drivability issues, would run alright at start up, but then start stumbling once warmed up. ECU threw code 53 passenger O2, after this happened. So I replaced both O2 sensors with new Bosch units today. Car started and ran well but after about 15 minutes started to stumble, and died. I checked the codes and now it says both O2 sensors are throwing a code. Any insight would be greatly appreciated, I was supposed to leave for ZCon tomorrow...
Follow Ups	O2 sensor issues - Barry (NJ) 22:23:22 07/31/16 Did you reboot ECU after new O2 install? (n/m) - BarryGZX 01:46:45 08/01/16 Reboot the ECU(?) - Barry (NJ) 06:59:42 08/01/16 MAF or vacuum leak. MAF would be the first guess since both - jzack 08:58:09 08/01/16 Boost/Vacuum leak test is clean - Barry (NJ) 12:30:20 08/01/16 2 brand new sensors both being bad...doubtful. I'm - jzack 14:20:19 08/01/16 Low fuel pressure could cause whacky engine conditions - jzack 14:26:07 08/01/16 Checked fuel pressure, 40 psi at idle. (n/m) - Barry (NJ) 22:24:26 08/01/16 Just noticed I'm seeing 5+ volts from TPS - Barry (NJ) 18:58:15 08/01/16 TPS is a variable resistor acting as a simple - jzack 20:25:05 08/01/16 Disconnect your battery... - DVDBURN (MD) 21:16:31 08/01/16 Could the fact that there are only 2 - Barry (NJ) 06:19:43 08/02/16 Panel? The ECU bottom cover? (n/m) - DVDBURN (MD) 20:17:53 08/02/16 Actually, I miss read your post... - Barry (NJ) 07:19:22 08/03/16 Ah, you mean the daughter board. - DVDBURN (MD) 15:05:03 08/03/16 What's the reason? Screws provide grounding or is more - jzack 16:09:46 08/03/16 Yes, a ground issue. (n/m) - DVDBURN (MD) 12:23:40 08/06/16 Thought it might have been the SAFC - Barry (NJ) 06:18:15 08/02/16 Barry - did you figure this out? (n/m) - jzack 21:20:25 08/05/16
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