Or maybe something shorted somewhere??

 

Has the engine been out?

 

No. Not at all. Original engine

 

dbw check your accelerator -inside truck ,I was reading tune in 03 .I hit the accelerator by mistake voltage drop and it stop reading ,like I said long shot

 

Yea I didn't touch anything. I'm going to put up a video on YouTube so you guys can see what time talking about.

 

Where are you taking that voltage reading? You can't rely on the dash volt meter. Dash gauges will typically drop when normal reading or writing is going on.

 

Dash... The meter drops and the truck power cycles during read. Nothing is screwy with my aldl wires either. I'm at a loss. Suqs *** that I have to save logs and tune the other pcm instead of doing it in the vehicle

 

What does this mean?

Again data to the cluster is interrupted during read and write. What the gauges display mean nothing.

 

The guages sweep during read and write in my 99 to signify certain points in the process, when its done it momentarily cuts everything off.... Only time ive had issues with it not wroting completely was when i thiught i had it plugged in all the way but didnt quite have it plugged in all the way...

 

Wonder if there isnt a terminal at the aldl that isnt spread or corroded or something!!!