LT3D
06-20-2025, 05:39 PM
Hi all, hoping someone experienced can help me find any anomalies in my datalog:
https://drive.google.com/file/d/1xYyRlPpuX7ia0FRzxMsPJByhrR0AC834/view?usp=drive_link
Symptoms:
runs rich (as seen in the BLMs)
rough idle
- from time to time there's a shudder in the engine (whole car shakes) after it gets into 3rd or 4th gear (this happened from 850s-900s in log)
Background:
new opti, waterpump, and seals
new air filter
new fuel pump (fuel pressure is 42psi at prime and 36psi at idle)
new evap system
new egr valve (rest of egr components tested fine)
injectors test at 12ohm cold and 12.9ohm hot (they don't leak down when fuel is primed)
fuel pressure regulator doesn't leak, psi changes when engine is idling and vac line is removed.
My BLM seem to be split at times. The O2 sensors vary from each other as well. But I don't know enough to determine what's normal and what isn't.
Any help is welcome guys.
Thanks.
https://drive.google.com/file/d/1xYyRlPpuX7ia0FRzxMsPJByhrR0AC834/view?usp=drive_link
Symptoms:
runs rich (as seen in the BLMs)
rough idle
- from time to time there's a shudder in the engine (whole car shakes) after it gets into 3rd or 4th gear (this happened from 850s-900s in log)
Background:
new opti, waterpump, and seals
new air filter
new fuel pump (fuel pressure is 42psi at prime and 36psi at idle)
new evap system
new egr valve (rest of egr components tested fine)
injectors test at 12ohm cold and 12.9ohm hot (they don't leak down when fuel is primed)
fuel pressure regulator doesn't leak, psi changes when engine is idling and vac line is removed.
My BLM seem to be split at times. The O2 sensors vary from each other as well. But I don't know enough to determine what's normal and what isn't.
Any help is welcome guys.
Thanks.