Subject	Mine would idle at mid 14 afr for about ten seconds
Posted by	xpwarrior on June 26, 2015 at 10:43 AM
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In Reply To	Actually, the ECU *does* have o2 feedback at idle posted by zromtech on June 25, 2015 at 01:39 PM
Message	then do a couple of sweeps as it accessed the O2 sensors then it would bump the short term fuel trim up a lot. Would end up around 13 afr ratio at idle and never change until the engine was sped up. Then the short term trim would drop back down and I would get normal readings until the next time it went to idle and it would do the same thing again. I got sick of it and just deleted the narrow band O2 sensors. It took a little time to get it tuned with the wideband but it works great now. I could never find a way to completely shut off the feedback at idle.
Follow Ups	What else to check... - Stanky 00:18:22 06/24/15 Don't feel offended, but let me ask you this.... - puchy 07:29:06 06/24/15 Compressed air to driver side, hockey puck blocking - Stanky 09:20:35 06/24/15 Check you idle stops. FSM section for TB setup. (n/m) - BoneZ (MD) 07:33:41 06/24/15 Will check tonight, thanks (n/m) - Stanky 09:22:17 06/24/15 EM-21 in the 95 FSM - BoneZ (MD) 19:19:40 06/24/15 Honestly i notice no change by disconnecting it - Stanky 19:34:00 06/24/15 Hell, that may be an issue. - BoneZ (MD) 19:49:52 06/24/15 if you changed smic piping you could mix up recirc and EBC - Dane (Houston) 09:53:50 06/24/15 I've been running the selin kit for a couple years now - Stanky 14:39:58 06/24/15 Re: I've been running the selin kit for a couple years now - Dane (Houston) 21:59:48 06/25/15 Have you tried it with just the TPS switch? (TPS sensor - ConVerTT 12:50:38 06/24/15 My NA is having this same issue. tried 2 TPS with clean pins - XTZ 18:09:08 06/24/15 So .... - ConVerTT 20:36:52 06/24/15 Can you run ECUtalk to check some parameters? (n/m) - OverZealous (CT) 17:45:25 06/24/15 Consult readings - Stanky 18:53:12 06/24/15 One more - Stanky 18:54:09 06/24/15 Re: One more - Dallas DamonZ 19:16:03 06/24/15 So... - ConVerTT 20:26:02 06/24/15 Correct! - Stanky 20:46:32 06/24/15 Awesome! - ConVerTT 23:20:02 06/24/15 Didn't realize it was open loop at idle - BlackholeZ 11:15:33 06/25/15 Actually, the ECU *does* have o2 feedback at idle - zromtech 13:39:07 06/25/15 Hmmm. That is interesting intel... - ConVerTT 16:44:11 06/25/15 Re: Hmmm. That is interesting intel... - zromtech 12:25:10 06/26/15 Should be able to disconnect the O2 and run at idle? (n/m) - BoneZ (MD) 12:29:51 06/26/15 yes, that should tell you if the O2s are involved (n/m) - zromtech 13:13:43 06/26/15 Ok great. Now how does this idle feedback interact - ConVerTT 09:03:08 06/27/15 Re: Ok great. Now how does this idle feedback interact - zromtech 10:31:23 06/27/15 Ok great. I was hoping that was the answer... - ConVerTT 11:43:47 06/27/15 Fuel pressure good, all injectors firing and ohm 12.5 - Stanky 14:22:44 06/27/15 Re: Actually, the ECU *does* have o2 feedback at idle - Dallas DamonZ 00:35:48 06/26/15 Mine would idle at mid 14 afr for about ten seconds - xpwarrior 10:43:27 06/26/15 Re: Mine would idle at mid 14 afr for about ten seconds - zromtech 13:01:56 06/26/15 FWIW, Nistune allows you to enable O2 feedback - aliaZ 17:24:47 06/26/15 You can also do that with Tunerpro or even hex editing - xpwarrior 18:22:31 06/26/15 or ZROM Pro!* - zromtech 11:39:28 06/27/15 Appreciate the static pics but was hoping for transients vid - OverZealous (CT) 18:13:29 06/26/15 Please let us know exactly what the problem turns out to be. (n/m) - Zuberman 01:28:00 06/25/15 I've had similar issues, it ended up being a bad MAF - Zvil (FL) 09:36:15 06/25/15 Good point ... - ConVerTT 10:52:55 06/25/15 I have suspected my MAF to be questionable for years. Maybe - Zuberman 12:24:25 06/25/15
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