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2003 lb7 no start
Hey Robby, I only use the power probe for audible check never use it on any computer systems. The fass was put in the ign. 1 fuse when I bought it but I removed it and tied it into the ign inside the vehicle. I don't like those fuse taps. It is still starting so I'll keep up to date if anything... -
C
2003 lb7 no start
Checked every connection at ficm and emc. Now for the weird part while going back through every fuse in the block I touched the SIR fuse with my power probe and no power with key on. I wiggled it and heard the door chime go off and probe lit up. Got it truck hit the switch and it fired up! Reset... -
C
2003 lb7 no start
Ok after fooling with more I finally got a U1800 loss of communication with ficm tested all fuse they ok. Anyone have test procedure for U1800 code? -
C
2003 lb7 no start
Hello, first timer here! Need some help 2003 lb7 all stock but does have fass150 lift pump installed by previous owner. Today I went to start the truck a and it fired for a second then shut off. Checked for codes none present. Data list shows 3500-3800 rail pressure while cranking over. I know...