Notices
ECU Flash

Fuel Trims are not Reading

Thread Tools
 
Search this Thread
 
Old Feb 18, 2013 | 12:40 PM
  #16  
Boosted Tuning's Avatar
Former Sponsor
iTrader: (12)
 
Joined: Jun 2005
Posts: 2,383
Likes: 8
From: Chico, CA (Nor-Cal)
Originally Posted by sky_fr
Great, I've just done all this, so as a reminder :
- put the rear o2 sim
- set the rear o2 in the periphery bit to 1
- disable the rear o2 heater by setting it to 0009

And it started display low LTFT.
Nevertheless, she doesn't want to enter closed loop under 1200 rpm, maybe because of the kelford 272 or the size of injectors DW1000, or should I change something in closed loop settings ?
You need to adjust "Closed Loop - LT Trim Control".
Reply
Old Feb 18, 2013 | 02:06 PM
  #17  
sky_fr's Avatar
Newbie
 
Joined: Aug 2009
Posts: 30
Likes: 0
From: France
I think I've found the adress for this table. I'm using 35e5 on a 96530706.
I can read (from stock I guess, never changed it)
Low to Mid 75
Mid to Low 62,5
Mid to High 1587.5
High to Mid 1581,25

But what should I do with it ? My trouble is that on idle lower than 1200 rpm, the ecu won't close loop (0 o2 stft reading and AFR off from 14.7)
At around 1000, I'm idling between 37,5 and 43 Hz
Reply
Old Aug 20, 2013 | 06:34 AM
  #18  
mrfred's Avatar
EvoM Guru
iTrader: (50)
 
Joined: Mar 2006
Posts: 9,675
Likes: 132
From: Tri-Cities, WA // Portland, OR
Originally Posted by sky_fr
I think I've found the adress for this table. I'm using 35e5 on a 96530706.
I can read (from stock I guess, never changed it)
Low to Mid 75
Mid to Low 62,5
Mid to High 1587.5
High to Mid 1581,25

But what should I do with it ? My trouble is that on idle lower than 1200 rpm, the ecu won't close loop (0 o2 stft reading and AFR off from 14.7)
At around 1000, I'm idling between 37,5 and 43 Hz
someone probably adjusted the closed loop load or throttle position tables to keep the car from going into closed loop at idle. its amazing the extent that some tuners will go thru to disable a very useful feature. i know its helpful to do for the 2000 cc/min injectors on pump gas, but i can't think of any other reason to do it.
Reply
Old Aug 20, 2013 | 07:08 AM
  #19  
sky_fr's Avatar
Newbie
 
Joined: Aug 2009
Posts: 30
Likes: 0
From: France
finally I got everything back on by enabling o2 rear simulator. Then closed loop started back on and worked well
Reply
Old Aug 20, 2013 | 06:25 PM
  #20  
detroit pistins's Avatar
Evolved Member
iTrader: (102)
 
Joined: Aug 2007
Posts: 2,173
Likes: 19
From: Detroit
Hello,
I am running into the same issue, where all my trims are reading zero. I have done the mentioned above and also checked if I am in OL all the time and that doesn't seem to be the case.
I am on SD using 9417 with S3 cams.

I reset the battery, and let it idle for 5-10 mins and no luck on the low trims. Any idea what maybe the issue?
Thanks


edit: worth noting that I have my rear o2 removed and disabled.

Last edited by detroit pistins; Aug 20, 2013 at 06:39 PM.
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
kyoo
ECU Flash
15
Jun 30, 2019 12:44 AM
4b11slayer
ECU Flash
4
Sep 30, 2016 07:26 AM
pupo
ECU Flash
21
Dec 15, 2012 06:21 PM
btownsoccer22
Evo Engine / Turbo / Drivetrain
15
Nov 19, 2012 02:01 PM
amstel78
Evo General
9
Jul 30, 2007 02:48 PM




All times are GMT -7. The time now is 03:59 PM.