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LB7: Cali LB7 - No Code Limp Mode
Well, to close this one out. Turns out there was a hidden Valet switch that nobody knew about. I picked up on it when I was swapping ECMs from another LB7 to test the bad ECM theory. When doing this I saw a couple extra wires going into the ECM harness, traced them through the firewall, and... -
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LB7: Cali LB7 - No Code Limp Mode
Hi, I am a performance and combustion engineer for Cummins but work on Duramaxes as a side business. My current issue is that I have an 03 LB7 with EGR (Cali version). I live in Indiana so this is the only cali LB7 I have seen. I tuned this truck with EFI Live (I do my own tuning) and it... -
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Truck cutting fuel, and abs codes
dmaxbowtie, What ended up being the issue with your truck? I have a truck that is in some sort of limp mode (fueling cuts out at 2200 rpm) and the only code is C0550 (Engine Control Unit Performance) coming from the Engine Brake Control Module according to EFI Live scantool. The limp mode...- Ian@MPE
- Post #6
- Forum: Stereo & Electronics