Ok so I got myself into a new project. Yikes didn't know how it would go. Swapped my 2005 Duramax 2500hd LLY diesel for a Duramax 2500hd LBZ diesel 2006 Cleaned my injectors swapped parts balanced my valves and swapped a lot of parts now getting ready to put back together. 3rd time working hopefully it will start. Wish me luck.
Engine swap holy moly , 06 LBZ into 05 LLY, no start
- Thread starter HDduramax
- Start date
Welcome
What was wrong with the LLY? Also, some of those early LBZs where detuned to match the LLY output. If yours is like that you can install the later tunes and "restore" the power and still be fully EPA compliant
What was wrong with the LLY? Also, some of those early LBZs where detuned to match the LLY output. If yours is like that you can install the later tunes and "restore" the power and still be fully EPA compliant
Well yes a lot of parts did match. 1st time I put in the new one connected everything but knocking
2nd time did in fuel injectors.
Now 3rd time adjusted valves balanced and or got it to clear valve adjustment since it rained didn't worked on it but tomorrow
connecting the rest back oh yes I did replace rail pressure sensor, new fuel pump, fuel pressure pump, and replaced crankshaft sensors and the crankshaft sensor. New gas treatment new diesel fuel drained radiator new fluids, we shall see tomorrow any ideas I could be missing?Double check the crank and cam sensors are in the right harness connector. Easy to accidentally swap them and you'll have a no start condition. The two sensors look the same and connect the same
Do you have a bidirectional scanner, like EFI live? Very helpful in diagnosing no start conditions and many other issues
By they way, Tom, or another mod will likely move this thread to another more appropriate location now that it's moved beyond an introduction
Do you have a bidirectional scanner, like EFI live? Very helpful in diagnosing no start conditions and many other issues
By they way, Tom, or another mod will likely move this thread to another more appropriate location now that it's moved beyond an introduction
If this is what was done (06 drivetrain into an 05), and the ECM and TCM were swapped as well as required harnesses, it'll 'work' without the 06 cluster and shifter, and it would 'probably' start with the 05 pedal (I know with a similar gasser pedal that had the wrong voltages for the LBZ, it would start but there was no pedal input). Now, if a 06 LBZ drivetrain was dropped in but the 05 LLY electronics were left, that's a different story.
Definitely what did I get myself into but always learning something new everyday
Oh it's been fun so far but yes lots of swapping out here and there thanks for the information
Well I'm still at it I have swapped my engine LLY for LBZ didn't want to start at the beginning now it starts but I could use some suggestions what are your thoughtshttps://youtu.be/ykQQ_0N9M04?si=dg6b-5YldRsMayC0 and
Source: https://youtube.com/shorts/JwBGfZMG1k0?si=Rna1-cjpIV-dgy6Z
So you got it running but it has a slight knock? Does it continue through out the RPM if you accelerate?
Did you get scanner yet?
Did you get scanner yet?