LQ4, Elgin 1841 cam, 706 heads, Flex injectors, return fuel system, 4L80E, 2003 DBW Setup.
Truck was running, driving. Working on tuning, thing stumbled, died in the road, wouldn't restart. No crank signal.
Rewired the crank sensor, new pigtail, all the way to the PCM. Now it cranks, and will idle, but has no throttle response. TB works fine when key on engine off, but as soon as it fires, it's over.
I'm sure I missed something obvious, but here's a log and a tune.
Did you unplug the MAF sensor in that log?
2016 Silverado CCSB 5.3/6L80e, not as slow but still heavy.
If you don't post your tune and logs when you have questions you aren't helping yourself.
Originally Posted by 5FDP
No, it's plugged in, and it was working fine, I can't find anything wrong with it at least.
The log showed that is was dead and the IAT was bottomed out at -38 degrees. That could cause a start issue.
2016 Silverado CCSB 5.3/6L80e, not as slow but still heavy.
If you don't post your tune and logs when you have questions you aren't helping yourself.
I unbolted half my intake and forgot.
Giant vacuum leak. Totally my fault.
Sorry to have wasted anyone's time.
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