Thanks to everyone posting. Reading through encouraged me start learning this stuff.
My truck is acting weird these days and am trying to diagnose with the tunerpro.
I just started into this EFI understanding with the hopes of putting an improved motor in this truck.
I would like to have everything working correctly before any changes though.
I finally got some data happening and a log file saved. Just like Christmas happy.
Are these the right files for this ecu?
1990 k1500 5.7 1227747 ECU
One of the main issues is the idle just starts increasing for no apparent reason.
A couple of things Pop out right away.. no spark advance reading and the iac position just starts increasing for no reason.
The vacuum also acts a bit erratic.
My first thought was the intake gasket leaking from underneath. Check the wiring to and from the dis and esc
Can someone have a quick look and give there opinion.
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