Engine Management and Tuning Crome, NepTune, Hondata, AEM, MOTEC

HELP! Replacing Resistors R136 and R138 in p72 ECU

Thread Tools
 
Search this Thread
 
Old Jul 21, 2010 | 11:18 AM
  #1  
eh vtec sc's Avatar
Thread Starter
Honda-Tech Member
iTrader: (1)
 
Joined: May 2008
Posts: 1,850
Likes: 0
From: Cactus Country
Default HELP! Replacing Resistors R136 and R138 in p72 ECU

Hi everyone, I found out that R136 and R138 are bad in my ECU.
Does anyone know what the specs on these are? And where I can get them?

From my research, the resistors are 1k 1/8 watt resistors, is that correct?
If so, can i use these: http://www.radioshack.com/product/in...ductId=2994579

Thanks in advance guys!
Reply
Old Jul 21, 2010 | 01:40 PM
  #2  
Relic1's Avatar
Honda-Tech Member
 
Joined: Oct 2002
Posts: 5,152
Likes: 24
From: chicago burbs, Il, USA
Default Re: HELP! Replacing Resistors R136 and R138 in p72 ECU

R136 and R138 are directly tied to the ELD input.
they are typically removed to increase stability when using the input for wideband support instead of using it as the ELD input.

yes those will work.
Reply
Old Jul 21, 2010 | 03:26 PM
  #3  
eh vtec sc's Avatar
Thread Starter
Honda-Tech Member
iTrader: (1)
 
Joined: May 2008
Posts: 1,850
Likes: 0
From: Cactus Country
Default Re: HELP! Replacing Resistors R136 and R138 in p72 ECU

Originally Posted by Relic1
R136 and R138 are directly tied to the ELD input.
they are typically removed to increase stability when using the input for wideband support instead of using it as the ELD input.

yes those will work.
Thanks for the prompt reply. So the resistors are 1k 1/8 watt!
I was previously using the ELD as my input for wideband datalogging but found out that there is an issue with smanager and using the ELD to datalog AFRs.
Many people have not had the problems I have had but this posting from the hondata forum says it all:

"Using ELD input as wideband is not a good idea. S300 disable ELD error only, but ELD correction is still working! You can tune maps with wideband at ELD connected, but when you detach wideband from ELD input - AFR will be poor.
Use EGR input in JDM ECU. You need just 2 diodes and 3 junction. And it working best of all.
Maybe sometime hondata will add choice possibility of EGR port input for USDM or JDM ECUs."
Reply
Old Jul 22, 2010 | 08:51 AM
  #4  
Relic1's Avatar
Honda-Tech Member
 
Joined: Oct 2002
Posts: 5,152
Likes: 24
From: chicago burbs, Il, USA
Default Re: HELP! Replacing Resistors R136 and R138 in p72 ECU

yah, Hondata hasn't figured out how to disable the functionality of the ELD input yet.
(neptune has, I'm not sure about eCtune)
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
GDM93Si
Tech / Misc
3
Mar 25, 2007 03:56 PM
Nataku
Acura Integra
6
Oct 4, 2005 09:10 PM




All times are GMT -8. The time now is 05:49 AM.