Engine Management eCtune , Crome , AFC , FMU , Zdyne , Hondata , EMS , TE , Uberdata Anything to control your fuel, spark needs!

lc1/Jaw/wideband troubles

Old 09-10-2008, 02:26 AM
  #1  
0.0 BAR
Thread Starter
 
Join Date: Oct 2007
Posts: 0
Default lc1/Jaw/wideband troubles

ok i have a jaw and just bought a lc1 because i thought it was not working/ giving accurate values, from both widebands its saying my car is running a little rich at anything above 3k, at 9lbs its around 11:1
but anything below 3k/ when i let off completly goes to 22:1 on any of my crome maps except i messed up on an uberdata map and i got 9:1 and ran like ----

other things car failed emissions for being too rich at idle and 2500rpm tests
also has been wired by a local shop who nig rigged the wideband install before i had the car, followed all possible hints on lc1 install, ground is at a point on chasis and get no led alarms from it

nascarfan is offline  
Old 09-10-2008, 02:28 AM
  #2  
0.0 BAR
Thread Starter
 
Join Date: Oct 2007
Posts: 0
Default Re: lc1/Jaw/wideband troubles

btw the other lc1 post really isnt the same problem....
nascarfan is offline  
Old 09-10-2008, 12:33 PM
  #3  
3.0 BAR
 
Join Date: Apr 2005
Posts: 1,521
Default Re: lc1/Jaw/wideband troubles

did it ever not go totally lean when you let off?
MAJORAHOLE is offline  
Old 09-10-2008, 12:40 PM
  #4  
0.0 BAR
 
Join Date: Feb 2003
Posts: 0
Default Re: lc1/Jaw/wideband troubles

Sounds like everything is working correctly.

Make sure you ground the wideband to the thermostat housing, doing that makes a LARGE improvement in signal quality.
Tom-Guy is offline  
Old 09-10-2008, 12:46 PM
  #5  
3.0 BAR
 
Join Date: Apr 2005
Posts: 1,521
Default Re: lc1/Jaw/wideband troubles

Originally Posted by Joseph Davis
Make sure you ground the wideband to the thermostat housing, doing that makes a LARGE improvement in signal quality.
? really? im about to install my lc-1 here soon, never thought that would be a good ground
MAJORAHOLE is offline  
Old 09-10-2008, 01:29 PM
  #6  
0.0 BAR
 
Join Date: Feb 2003
Posts: 0
Default Re: lc1/Jaw/wideband troubles

It's the ECU sensor ground, dude. What the ECU compares all it's sensor voltages to.

You know how the stock fuel pump sometimes has as little as 9-10 volts across it? That is the sort of quality a unibody or battery groud gives you. The only ground in the system is the block FTMFW.
Tom-Guy is offline  
Old 09-10-2008, 01:32 PM
  #7  
WTF
3.0 BAR
 
Join Date: Jan 2006
Posts: 2,058
Default Re: lc1/Jaw/wideband troubles

maybe your lc1 is a pile of ---- like mine.
WTF is offline  
Old 09-10-2008, 01:43 PM
  #8  
0.0 BAR
Thread Starter
 
Join Date: Oct 2007
Posts: 0
Default Re: lc1/Jaw/wideband troubles

maybe my map just sucks *** at idle....or iacv or other sensor is ------- up the works
nascarfan is offline  
Old 09-10-2008, 02:12 PM
  #9  
0.0 BAR
 
Join Date: Feb 2003
Posts: 0
Default Re: lc1/Jaw/wideband troubles

IACV isn't a sensor.

Your map sucks at idle. Buy Stenciltizm's Batronix burner in the FS section and fix that.
Tom-Guy is offline  
Old 09-10-2008, 10:31 PM
  #10  
0.0 BAR
Thread Starter
 
Join Date: Oct 2007
Posts: 0
Default Re: lc1/Jaw/wideband troubles

i have a burn 1, but i just cant believe its really at 20:1 and actually idles
but its not just at idle, its when i let off too.. so how do i fix that just richen up low rpm values in vac
if its super lean why would i fail an idle test?
nascarfan is offline  

Thread Tools
Search this Thread
Quick Reply: lc1/Jaw/wideband troubles


Contact Us - Sitemap - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.