Wideband reading lean at idle. The sensor is 22inches away from Mar 26, 2012 · Wideband reading lean at idle but. com/product/fumore Aug 9, 2007 · I got my wideband installed yesterday and this is my first time using a wideband so I just want to make sure its working correctly. 5 - 15. My wideband is reading ridiculously rich. 9. 8 volts) or a lean reading (0. 2 which i heard is normal. 5 Sep 13, 2016 · Innovate wideband reads very lean at idle, but the plugs are sooty Jump to Latest 11K views 20 replies 6 participants last post by mtrain2000 Sep 16, 2016 mtrain2000 Discussion starter Oct 4, 2025 · Wideband question. Put in a new lc1 (to replace an old one) from a few years ago and at WOT the AFR is dead on where it was when the car was out last yet the idle and part throttle AFR is 16-17s. 5-11. Reads lean on first start up and always lean when I get on it. But wouldnt I still be able to lean it out with my SAFC? Jan 23, 2010 · I just wasnt sure where to look, and I have looked for the last hour lol At idle and cruising you should read 14. 8:1 on E85. When I first star the car it will be at 14. 3-10. I put the wideband on my 05 silverado and it read "air" or "lean" at idle just like the vette. Subscribed 490 55K views 8 years ago #HPTK Pick up your wideband kit here: http://thetuningschool. Not safe to drive, thus it is parked for the time being. About two months ago I was only getting a wideband reading of 14. The issue Im having is when trying to tune VE tables with warm start my wideband will slowly go full lean at Idle. 7's RR's. 4). 7, then it climbs up to the low to mid 15's and May 13, 2020 · Just got a sensor installed and my wideband gauge hooked up. First of all at idle, the gauge normally stays around 15. A conventional O2 sensor will produce either a rich reading (0. Looking for a few answers: 1. 2 periodically on idle, averaging around 10. Full boost pulls read 10. After i run it hard, it reads 13-16. 8 no matter what load, I figured the sensor took a crap so I replaced it. It will go lean and then super rich then back to lean or hover around lambda. Jul 27, 2005 · Your wideband O2 sensor in the exhaust pipe doesn't care what fuel is being burned, it only cares how much oxygen is left over. Well, my wide band started going nuts. 6. Sep 25, 2014 · Last friday night on my way home from work the wideband just went full lean (- - -) no matter what load. Another difference is that A/F sensors don’t produce a voltage signal that suddenly changes on either side of Lambda when the air/fuel goes rich or lean. At idle the car sits around 13. WOT it pegs at 10. Low 10s is too rich, high 12s is too lean. 5. 07 lambda. by Diabolic1 » Mon Mar 26, 2012 3:50 pm My Kams and Lambse all show to be good. The car does have a small pre-sensor exhaust leak but that has only ever effected a reading at idle. It is a very useful tool for determining if your engine is running too rich, too lean, or just right. Oct 24, 2016 · Signs that point to rich fuel mixture: - Fouled/sooty plugs - Wideband reading is pig rich Signs that point to lean fuel mixture: - Backfire/popping when engine tries to run - O2 sensors are commanding positive fuel trims Installed an AEM Wideband over the weekend and thought the readings would be fairly steady, but it seems to bounce around at idle between 13. Jan 5, 2015 · An AFR gauge, which AFR stands for Air/Fuel Ratio, uses an O2 sensor at he beginning of the exhaust pipe to read the ratio of air to fuel as it is being expended through the exhaust. 7AFR (-/+ 0. Is thi We would like to show you a description here but the site won’t allow us. 7 idle however once the car sits idle for a while it will go to 13. Apr 10, 2015 · During idle when i start my car, the innovate mtx-l wideband reads 18-20 cold, when it gets warmer it reads 15-17. When I write my base tune file with everything turned back on, wideband shows normal 1ish lambda at idle and cruise. . If i shut it off and turn it back on, it reads 18-19. Deceleration will normally take it off the charts into lean, if you have an AEM it will display '---'. My cam is 228/238 duration. It starts nice, and runs nice while it's decreasing RPM from startup to try and hit idle. I found a pretty big boost leak, which is most likely the sole culprit. I have add 5% to my MAF in the idle area and LTFT is better but wideband is still reading lean 1. Down to 10. So, let's say you decided to swap from pump gas to E85 one weekend. I just upgraded from cast iron ported GT40 heads with a ported cobra intake to Vic Jr heads, ported RPM II intake, and 1. I have ran the engine in forced open loop and forced close loop and while both are reading lean on my AEM Wideband, the engine sounds better and reads less lean when in closed loop. 5 then cruising it's really rich at around 10. Still have fueling issues, it's running about 1. 4 or so. I am in the process of scaling my MAF and noticed when in open loop my idle is very lean according to my wideband but when I look at my LTFT is is pulling 10-15% fuel. I used a different sensor and used the tail pipe adapter. Many from the carburetor faithful will tell you that you only need to read the spark plugs to know if you are The attached tune file has only been altered to raise base idle RPM and Idle airflow to get it to start and idle with no pedal. 0 and I Mar 19, 2009 · Strange wideband issues, reads way lean at idle yet ok at WOT, ltrims good. 1 lambda on the wideband, and narrowbands confirm that it's running lean most of the time. WOT you are trying to tune for around 11. Any suggestions on what to look for? Thanks 02-23-2022 #2 Mar 9, 2011 · That’s why they’re also called “wideband” O2 sensors. 2 volts) when the fuel mixture changes. Car runs great! In closed loop at idle my LC1 is datalogging 15. 03-1. When I come up to a light and idle it's around 11. Let's also say your idle is dialed in great, and you're hitting a target AFR of 9. qmgik qfnw weboyg vgb brl elxvd wiiall ooih lfcyp gow