Hi CT. This is my first time using the new cable and Winaldl. I don't yet know what all I can do with it. More class work tomorrow.
8" of vacuum is puzzling because I have hooked up a manual vac gauge and it held a solid 19.5 ".
Map voltage does show .9 volts
So far, I have not replaced the map sensor. I did test it to see if it held vacuum.
It has a new 195* thermostat in it as called for and new fan clutch.
Battery charging rate does get up to 13.7 at times, tested with a multimeter.
I have sprayed carb cleaner all around looking for vacuum leaks and none found. I also figured a steady 19.5" vacuum ruled out a leak.
I will spend more time with it tomorrow and get back to you.
I had no idea this early OBD system did so much.
I have to learn what all those values mean and the preferred readings of each.
Thank you sir.
Also, I picked up a couple of proms at the junk yard from the same ECM number as mine to try if it comes down to that possibility.