nodnarb481

I was using freescan to check out why my car was running real rough in closed loop and i found that the right o2 sensor was reading voltage around .04v mostly and the left was reading around 1.1v. I cant remember what the voltage is supposed to be but im pretty sure that right one could be the culprit. Its a new o2 (ac delco) and i recently had to fix the wire to it that was burnt and throwing codes. So im wondering what could be the problem now.

if it helps i have a blown header to y-pipe gasket that ive still gotta fix on the drivers side.

Injuneer

If its in closed loop, and one O2 sensor is steady at 0.04V, and the other is steady at 1.1V, they are either both screwed up, or its not in closed loop. They are both supposed to be cycling rapidly between .0xx - .9xx Volts. What does FreeScan show for the long term fuel corrections (BLM's) in the various Cells?

nodnarb481

Im having trouble making sense of a lot of the stuff on this software as i am new so here is all my data.. plus it seems like there are long periods of time (as you can see in the spread sheet if i could figure out how to load those on here) where it just stops communicating which is making this harder to figure out.

here are some screen shots i took.
http://i32.photobucket.com/albums/d2...Untitled-1.jpg

http://i32.photobucket.com/albums/d2.../Untitled1.jpg

http://i32.photobucket.com/albums/d2.../Untitled2.jpg

http://i32.photobucket.com/albums/d2...b481/test1.jpg

http://i32.photobucket.com/albums/d2...b481/test2.jpg

http://i32.photobucket.com/albums/d2...81/testing.jpg

if someone could tell me how to get files like the spread sheets on here thatd be great

nodnarb481

Ill also add that there is a leak at the drivers side gasket between the header and y-pipe.
Also it smells so rich when the car is running funky that i get a headache.

nodnarb481

here is the spreadsheet (excel)

I believe that it is me in idle most of the time and a bit of driving. The beginning i think is open loop for a short period of time and then it goes into closed loop. You can see that there are long periods of time that are just one value for every thing and thats where im having trouble because most of the data is kinda useless..


http://www.mediafire.com/?dwc4mlsummd

nodnarb481

bump cause im still lost..

Guest47904

Fix everything you know is wrong first and then start over. No sense in second guessing.

One other thing, where was the O2 wire burnt? If you did the repair between the connector and the O2, that could be the problem. There should never be a repair made in that area.

There is also a way to test the O2 wiring to see if it is ok.

mrmint69

Your numbers on the spreadsheet don't appear to be right. They also freeze 2/3 of the way throught it. My blm's are all over the place and yours stay the same.