Just wanted to post the fix for this random “cat test glitch”
The fix is to set the O2 codes from “No error reported” to “no MIL light” with the box...
Getting the L83 running fairly well. Idles pretty solid at 850 rpm with good power and fueling pretty good/
A couple of issues though. under wot the...
Here's a data log I took today... First attempt was crank no start, I kept the log running, didn't even turn the key off.. It fired up second shot.. ...
To me, in my mind with those codes. Id be looking at the can buss wiring for the transmission. Many of these vehicles can do a crank position relearn...