WOWThe BBQ Special LBZ ECU I purchased for our experiment... post #980
LLY Ficm
I'd like to see how they integrated the injector driver circuit into the LBZ/LMM ECMwww.duramaxdiesels.com
Need help with a LB7 / LBZ conversion truck in SW NY state.
- Thread starter 036.6turbo
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The VIN can be changed with EFILive, allowing Rob's tune to load after a VIN license is purchased?
Yes
Use the scan tool first to change the vin. Then license the ECM and load the tune
Unless the tune is locked to the ECM's serial number.
I don't remember that? Seems like just the VIN. But hell, that was (9) years ago. LOL
It IS possible, although exactly when it was introduced, I don't know. It IS possible that the OPs tune predates the ECM serial number lock I suppose. I can say that my IdahoRob LBZ tune is not locked in any way...... So if I were to take a tune, restrict it to the SN of my ECM, and then send it to someone else, it would barf.
Thanks .
We did get it all set up.
The version of EFILive on the laptop I sent was older and did not support rewriting the VIN.
I sent him my version, he was able to install it and change the VIN in the replacement ECM.
Did have to buy a VIN license.
After all of that he was able to do a full flash of of the stock from my donor truck and then the DSP5 from Rob.
Also verified TPS feed back in the TCM PID 0%-to 99.9%.
Truck still will not run.
The tune from Rob has all zeros in the serial number field. I do not believe he used the serial number to lock it to the ECM. It did a full flash on the replacement ecm.
Well, that's good news on the Tune. Interesting that it still won't run though... Seems more likely at this point that there's a mechanical issue at play (unless of course you got the cosmic bad luck of getting an equally bad replacement ECM). No monkeying? no chance the crank and cam connectors got swapped? Stuff like that? Will it try to run on brake cleaner or ether (with glow plugs disabled for ether)?
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A spoon full of gasoline on the fuel filter has never caused me issues with the glow plugs and has always run smoothly and quiet. Much safer then ether
It does run on Cosby juice.
Yeah, I'm not there. But he did mention before ever replacing the CP3, it would run on just a touch of ether.
Yeah, we were riding pretty high once we figured out getting the VIN changed in the salvage ECM.
Managed to buy a VIN license from EFILive's website.
Got the V2 to load it in.
Flashed the stock tune in from the donor service truck back in 2016.
We're already talking about what celebratory beverage we're gonna be tossing back once this thing fires off.
Rob's tune loaded without drama.
Then it just spins over......and over........and over.
No joy.
Managed to buy a VIN license from EFILive's website.
Got the V2 to load it in.
Flashed the stock tune in from the donor service truck back in 2016.
We're already talking about what celebratory beverage we're gonna be tossing back once this thing fires off.
Rob's tune loaded without drama.
Then it just spins over......and over........and over.
No joy.
Actually, not sure.
Once I sent him a newer version of EFILive, his selection of available PIDs seemed to change.
The laptop I sent was running V8.2.xx
He's now running V8.3.xxx (I'm not currently in front of my laptop)
The previous version wasn't even showing the A40 module for the trans.
He was going to look through the list of PIDs for ones that seemed applicable and run a few more record events.
He also has contracted another set of eyes to take a look this evening. A dealer tech is bringing a snap on solus scanner to kind of verify what we're fumbling around with in EFILive.
That's where we left off yesterday evening.
It was getting late, so it is to be continued this evening.
We obviously appreciate any ideas, thanks for following along.
What's the chances it snapped the crank and now the cam/crank are out of reference? Does the balancer "wobble" when cranking or running on the sauce?
Or possibly a sheared pin?
Visiting tech showed up, he saw nothing that should keep the truck from running.
No codes, he was asked about cam and crank signals, response was he saw nothing of concern, didn’t elaborate any further than that.
He did seem to struggle with it being swapped to LBZ, made a couple references to LB7.
He talked about some stuff I’ve never heard of. “Matching the flow rates listed for the fuel injectors with was shown in the glow plug module?”
Again I’m not there, got all of this as a recap from the trucks owner.
But the hopes that a 3rd set of eyes would see something we missed did not prove fruitful
Visual inspection of the balancer shows no signs of a wobble.
Does it need to be removed to inspect the pin? I can’t remember.
When he told me early on it ran on ether, I kinda of ruled out a mechanical issue, focusing more on fuel and fuel control.
Still trying to verify that the ECM is even trying to send a pulse or signal to the injectors.
GM service information has no procedures I can find to test electrical signals at the injectors themselves.
Any one know of the correct procedure to test them?
Also if one injector goes bad, would it shut the all down?
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No codes, he was asked about cam and crank signals, response was he saw nothing of concern, didn’t elaborate any further than that.
He did seem to struggle with it being swapped to LBZ, made a couple references to LB7.
He talked about some stuff I’ve never heard of. “Matching the flow rates listed for the fuel injectors with was shown in the glow plug module?”
Again I’m not there, got all of this as a recap from the trucks owner.
But the hopes that a 3rd set of eyes would see something we missed did not prove fruitful
Visual inspection of the balancer shows no signs of a wobble.
Does it need to be removed to inspect the pin? I can’t remember.
When he told me early on it ran on ether, I kinda of ruled out a mechanical issue, focusing more on fuel and fuel control.
Still trying to verify that the ECM is even trying to send a pulse or signal to the injectors.
GM service information has no procedures I can find to test electrical signals at the injectors themselves.
Any one know of the correct procedure to test them?
Also if one injector goes bad, would it shut the all down?
Sent from my iPhone using Tapatalk
Agreed, certainly could be.
This is important on LBZ+ platform.
Not all, at most I've seen them pull down a set of 4.