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-   -   Disable Rear O2 (https://www.ft86club.com/forums/showthread.php?t=118464)

GoobyFRS 05-10-2017 10:53 PM

Disable Rear O2
 
Keep getting P0140 CEL. Rear O2 No Voltage. I double checked the connector, everything looks fine. So I figure it's just shot.
I installed catless headers 5 months ago and have been running the OFT OTS Stage 2 UEL 91 oct tune since. About 15k miles.
Gonna buy a new O2 sensor at some point, but can't right away, so I want to disable it.

So from reading other threads I understand I need to 0 all inputs in the Closed Loop Fueling Target Compensation B (Load) in RomRaider.

https://gyazo.com/0b54a6c17dda6a4e338f42fe068d25d7

So, I'm thinking I should 0 those, and then in the Primary Open Loop Fueling leaning out a bit around Idle to help compensate from running at 13.4 AFR like it has been.

steve99 05-11-2017 01:29 AM

Set af#3 corrections to zero

GoobyFRS 05-11-2017 02:26 AM

Would that normally be in the Fueling - AF Corrections / Learning folder? Because I don't seem to have anything anywhere in my rom with AF#3.


https://gyazo.com/93ff4b63d8cdefbbbe55e3f109c72059

steve99 05-11-2017 05:45 AM

2 Attachment(s)
Quote:

Originally Posted by GoobyFRS (Post 2908248)
Would that normally be in the Fueling - AF Corrections / Learning folder? Because I don't seem to have anything anywhere in my rom with AF#3.


https://gyazo.com/93ff4b63d8cdefbbbe55e3f109c72059


AF3 correction in my defs under Fueling AF correctiom /Learning

try attached definition but check tables and make sure its matched to your rom

RedFRS4me 05-12-2017 10:11 PM

Zero af3 tables then disable cel code for o2 voltage. I've been running with zeroed af3 tables for a year with no noticeable issues. Another thing if you intend to buy a new o2 sensor. Going catless might be why the o2 deteriorated prematurely. I bought a new o2 but left my bad o2 in for my catless header.


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