Been a while since I did any tuning, I connect the same laptop to my Autoprom and to the truck and I can not get it to connect. - correct ADX/XDF loaded.
I also tried winaldl on my tablet - it...

Passed the road test, even the memcal that that I put in after the melt down came back??
But when I was testing I think I misseated that one, so it seems only the one in the truck when the wires...

I did more comparison testing last night.
Both Memcals in the 2 proms I had connected with the fried wiring will not work when the system has to "do something" no matter which PCM I put them in.
If...

By "what did the bench test do" I mean, why did I have a flickering CEL in the truck, but after the bench test, that was gone, it was either on or off... although it does not sound like electronics,...

The wire bundle moved over and laid on top of the EGR base and became 1 big cooked together mess - yes my error for not running them/securing them correctly.

So I set up my bench test,...

Excellent - thanks both of you.
I will bench test the PCM, and if it "works" I put it in the truck and connect 1 sensor at a time and see what freaks it out.
Even if the PCM fails, I will probably...

"Hot wire" as in I run the neg to neg and pos to pos on a jump it pack, not all get a power....

Looking for a way to get a bench test on the PCM with out a complete system, if with power to it the...

Just a thought, what is bare minimum the PCM needs so I can hook it to my laptop, I have another set of PCM plugs, and pretty sure another ALDL connector, so can I hot wire to the grounds and power...

done that, even switch the MEMCALs between the 2 PCM's, even put the chips in my programer and verified they are good.
No change, even left the chip out, then the CEL stays on solid

the PCM controls all, and to back up, it was engine only with the 360, then I went 401 (basic program change) and the 4L80E. Took me a few tries to get the 4L80E to shift, but the engine was fine....

First post, here, I lurk a lot, and hang out on another forum with a member here.

Here is my situation, I just got an AMC 401 running in a J20 with a 4L80E tranny all controlled by a 16197427 PCM....