Need Help: Bank 2 running lean and getting plenty of KR
Need Help: Bank 2 running lean and getting plenty of KR Both Bank 2 sensor 1 and 2 are running lean. When I accelerate hard the KR goes to as high as 9.9(not good) temporarily. The engine temp is also hitting the orange area on my efilive so its running pretty hot. What could be wrong?? How do I find out if its a vacuum leak??Someone told me to spray the motor with a hose with it running, is that a good idea?? Also, this maybe a separate issue but my fuel system B status was showing as failing but then went back to closed loop, it was really weird. Any help would be greatly appreciated. Thanks
On The Tree
Joined: Nov 2001
Posts: 164
Likes: 0
From: Gold Coast Australia
I don't know if this is your problem, I had a similar thing happen when i did a reinstall of my motor/trans, I had the wiring loom around the wrong way, this gave the sceario of left side sensor saying it's lean so it went to dump fuel in the other side but instead of the left side being lean it was the right side.
This ment the computer was constantly fighting for an equalibrium and would never get it.
Was easily remidied by swaping the wiring loom over and putting the sensors in thier correct plugs.
This ment the computer was constantly fighting for an equalibrium and would never get it.
Was easily remidied by swaping the wiring loom over and putting the sensors in thier correct plugs.
Whats the Fuel Trim on the right side? It could be a bad O2 Sensor. I had the same problem before and the car was misfiring and running like _hit. I found out that the 02 Sensor was stuck to the headers and melted. I replaced it and the Fuel Trim were back to normal levels and the car was running good. Check ur 02 sensors 
