Finally bringing Prostar home to fix....

[Rawze]

(04-25-2018 )Brock Wrote:  Talked with unilevers who told me my test with the 870 ecm was all but useless as it's not setup to multiplex.

Put mine back on, unplugged abs module and ran it for 1.5 hours before it stalled. Hooked abs back up, cleared codes and it's been running fine since. I just drove a few hundred miles to finally unload and back with zero issues.

I did notice that after cleaning the inside firewall grounds, the truck ran alot longer between stalling. It sucks now because I know I didn't do anything today to fix this problem but won't be able to find it till it acts up again.

If the ECM is more than 8 years old, simply replacing it is not a bad option to see if that will cure it. It is not money lost if it is that old.