Thanks for Your help, and been there read that.
I also like to test the parts before changing them, but have spares for almost everything.
It would be easier if I knew what settings and range my...

That makes sense. My usb to ALDL cable has a 10k jumper pin.

I never did get my laptop to see the usb ALDL cable? My scanner adds aprox. 250 rpms while checking codes and viewing the data stream, is that normal?
My scanner requires a serial cable to hook up...

Thanks, I will get more info posted today. I didn't know what where to check at this point.
I was going to try to datalog today but cant get my laptop/WinALDL to see the WinALDL to usb cable? Do I...

I got the surging to go away by unplugging the air pump and plugging its vacuum.
It still falls on its face 75% throttle to full throttle.

1227747 AMUR TBI Map surges

88 K5/V10 Blazer 5.7 tbi 1227747 AMUR
Idle and Map sensor voltage both surging.


I can and did try adjusting TPS varying from .54 to .75, the best running was...