To start I’ve PM’d Will Tillery but I am posting this while I wait...Just in case.
I have a 2003 DII with SAI, bought a matched ECM/BCU/Fob from Will for SAI delete.
Prior to the install I had no CEL, only pending code was SAI Right bank...hence why I wanted to delete...also I needed a fob.
I installed the BCM/ECU, started up and immediately had O2 and fuel tank pressure codes.
Replaced all four O2’s, cured that problem fuel tank pressure code persists.
The code description says “shorted high”, and looking in the manual it is a 3-wire pressure transducer so shorted high =+4.5V or higher is being seen on the sensor return pin.
So I pulled up the carpet and looked at the fuel pump - no pressure sensor.
I also searched and found this old thread: https://discoweb.org/index.php?threads/another-sai-thread.82914/#post-953770
Looks like I have an elusive 49-state emissions w/SAI truck.
Has anyone ever solved this?
The only diagnostic tool I have is the AB “iLAND” app/dongle.
Cheers!
I have a 2003 DII with SAI, bought a matched ECM/BCU/Fob from Will for SAI delete.
Prior to the install I had no CEL, only pending code was SAI Right bank...hence why I wanted to delete...also I needed a fob.
I installed the BCM/ECU, started up and immediately had O2 and fuel tank pressure codes.
Replaced all four O2’s, cured that problem fuel tank pressure code persists.
The code description says “shorted high”, and looking in the manual it is a 3-wire pressure transducer so shorted high =+4.5V or higher is being seen on the sensor return pin.
So I pulled up the carpet and looked at the fuel pump - no pressure sensor.
I also searched and found this old thread: https://discoweb.org/index.php?threads/another-sai-thread.82914/#post-953770
Looks like I have an elusive 49-state emissions w/SAI truck.
Has anyone ever solved this?
The only diagnostic tool I have is the AB “iLAND” app/dongle.
Cheers!