So, as of now which is 350mi from the following repairs:
- new from Jack.
- new OXS's from Jack.
- new MAF sensor from Jack.
- new Beru POS
- new Bosch
- new NGK iridium plugs
- injector servicing, volume test, and wiring check.
- rewire coil and POS grounds with 12ga shrink tubed and soldered from conn clip
to conn clip.
- at about 100mi after initial repair program the CEL came on with p1606, p0431, p0421. after unhooking B+ for a bit i rewired 3-way CAT OXS heaters to with 16ga, tubed and soldered. 250mi since then and no CEL.
- replacement muffler.
the voltage difference was mostly due an impropriety with rewiring POS's. fixed.
my next step is hopefully only the body work (was in an accident before my purchase), interior repair, leaky cam seal, Jack's suggestion on the cam adjuster filter, replace rear struts, vacuum tests, and change out SAE with Pentosin at 1000mi with a final compression test.
oh, and with the info display? mine was all pixelated so i replaced with a chinese knockoff and bob's your uncle, the German HAL 9000 glaring at me with a furious red rectangle. i should've known better since there were only about 60% of the available traces compared to what was on the board and in the previous unit.
would anyone know where i might be able to purchase a viable unit???
props to Jack for the parts and parts of wisdom, and to Uwe for the eBahn image.
yinz help was invaluable.
P.S. Jack, what're your view on using Kreen as recommended in the gas tank as well?? let a sleeping dog lie?