The Top DSM Community on the Web

For 1990-1999 Mitsubishi Eclipse, Eagle Talon, Plymouth Laser, and Galant VR-4 Owners. Log in to remove most ads.

Please Support JNZ Tuning
Please Support ExtremePSI

O2 sensor not cycling??

This site may earn a commission from merchant
affiliate links, including eBay, Amazon, and others.

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.

agressivedsm

20+ Year Contributor
77
0
Dec 21, 2002
Helena, Montana
Ok been through 3 o2 sensors. I have no o2 cycle at all. Its stuck at .2 all the time. I had other issues and had to replace my engine harness. Same situation with both harness'. Connections good. Sensors are good. Im lost, any ideas?
 
As cryptic said: Post a log, we dont care how ugly is it, just post up an idle log so we can see whats going on in your settings and make sure you're logging plenty of things. More info = better responses to help you out.
 
Ok i can do that. Log will be ugly. My exp is very good mechanically but as far as tuning within link im a bit weak. I have however gone through and checked and unchecked the lock in closed loop option with no response. My car is also running very rich. Currently on oem injectors with a 255 pump and a fuel lab fpr turned down as low as i can get it and still idle at about 13 and at WOT it dives past 10 on my aem wideband
 
no shame in learning bro! I could dig up some fugly ass logs, took me a bit to learn as it does for everyone. Myself or any number of other people will be here to help out no matter what the log looks like, no one gonna rip on ya.
 
Right click on your bar at the bottom and add open loop and close loop to your list of things to log. You want it to say closed loop=1. If I let me car reach operating temp. then drive a few hundred feet it my open loop will =0 and close loop will should to =1. you will notice the O2 sensor simulating.
 
Check for exhaust leaks.. I had the same problem.... I put new exhaust and turbo gaskets... next day my o2 was cycling again.
 
Support Vendors who Support the DSM Community
Boosted Fabrication ECM Tuning ExtremePSI Fuel Injector Clinic Innovation Products Jacks Transmissions JNZ Tuning Kiggly Racing Morrison Fabrications MyMitsubishiStore.com RixRacing RockAuto RTM Racing STM Tuned

Latest posts

Build Thread Updates

Vendor Updates

Latest Classifieds

Back
Top