Originally posted by Rogerm60:
The A/F meter should be hooked to it's own sensor as per instructions .
If it's hooked to the same O2 as the computer, this may be causing a problem.
Check the fuel pressure if in doubt. The pump, filter, and FPR can cause problems.
High RPM power loss can be the first sign of a CAT problem, IMRC will manifest itself around 3800 rpm.
Is the rear O2 as new as the front?
First i was getting this code way before i even put in the a'f ratio gauge. Also a fellow member hooked up the gauge for me. He has done several in the past. He hooked it up to bank 2 which is where i am having a problem.
About the fuel filter, i have changed it a couple months back. Fuel pump or fuel pressure regulator would casue all of the injectors to run lean. In my case only the 3 rear cyclinders were running lean and the front were fine.
Thsi weekend while taking apart the intakes. I found that one of the secondaries on the front were nto opening. I fixed that problem and now the car runs great. A whole lot more power but the code still remains. What gives?
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