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LLY Ficm
@1FastBrick I really wanted a one piece lb7 cam gear.. They seem to be more precise.. [emoji38] That shall do just fine for this experiment. Once we get things scanned in, you can assemble those goods on the bench, and we'll align some marks.. Sent from my SM-S901U using Tapatalk -
LLY Ficm
Ok believe I've answered all of my wiring questions.. Old trusty GM Upfitter comes through again. A Medium Duty LB7/ LLY, Circuit 1020 is actually [Key-On] directly powered from the ignition switch. It runs to several nodes, like TCM, and acts like our serial data wake on wire on LBZ/LMM. It... -
LLY Ficm
Sorry, I'm so used to looking at these factory wires, I just see Batt and Relayed power as colors. Ok here is what I have C1 01 - BK/WH - 351 - GND 40 - BK/WH - 351 - GND 20 - OG - 440 - Battery Positive 57 - OG - 440 - Battery Positive 19 - PK - 439 - Ingition 1 Voltage - To PCM Relay 1... -
LLY Ficm
Earlier it showed me in Columbus out for delivery... That's usually a good sign they don't know where it is.. If they only had an accurate tracking system, like say UPS? My son's diag tracker can tell what each driver ate for lunch 3 days ago, and why my package smells like curry... lol No... -
LLY Ficm
If ya have one that's not to dirty, a photo copy, along with a known scale object like a quarter, and most CAD tools can directly import as a drawing. And if not too big of deal, that cam wheel also. Trying to build an exact model of that crank cam notch relationship. Then we can fudge with... -
No Throttle No codes
Look for pids under APPS. Those be the name of raw sensor voltage data. Should have apps1 & apps2. One sweeps low to hi voltage, other exact opposite. If those are out of spec at key-on the engine will have no throttle response. Sent from my SM-S901U using Tapatalk -
LLY Ficm
Could use a capture of actual cam and crank signal wires. Easily identifiable at bail connectors, as are shielded together in a set of 3. Beginning to think post man has dropped that lb7 ecm along the way. Shows out for delivery, but not this late in the day.. Sent from my SM-S901U using Tapatalk -
LLY Ficm
Doing some reading on that MegaSquirt link, if I read it correctly, our crank wheel #1 tooth should be the 1st tooth after the gap. With our Cyl #1 TDC normally being exactly 15 teeth after that. But what has me stumped is the 60-3 count used on LB7/LLY is uncommon And our skipped tooth count... -
LLY Ficm
I did find my proof of my other emulated Dmax wheel patter, that I'd been running the Benched LMM's with in past. Here is where I emulated crank cam signals, while capturing the 3 injector line pulses. Knew I had been using a better patern setup before. This from testing Post injection pulse... -
LLY Ficm
Ok who has cad skills and can draw up our 2 simple rector rings? Hate to ask @Cougar281 to scan us some wheel copies I can import into software for demonstration purposes... Actually figured I would give DALL-2 OpenAI a shot, after seeing all the cool pictures it's dawn up lately.. But for... -
LLY Ficm
Exactly. Where is our delay, and possible compensation, if any, being managed? I've only verified the two pins marked Crank Signal on LB7 ECM are not directly connected together. Could be a simple diode blocking continuity tester. Yet we have 2 matching pattern crank signals available on every... -
LLY Ficm
Soon as our replacement lb7 ecm shows up, I can produce such errors in my crank ring code, and we shall know. Just a 1 to 0 and a tooth be gone.. As mentioned above, we have 2 crank signals to monitor. 1 in another out. Who's to say they ain't fudging output line version. We've never logged... -
LLY Ficm
Looks great. No fingers in the fan required.. Also just in time to verify our bench emulator code.. Which I have a beta version ready to go for any Arduino junkies who would like to follow along. Just need to adjust the timing positions on all of these pulses. Cam TDC notch I know is off a few... -
LLY Ficm
All these Skittles been making the room spin... :sneaky: 1-2-7-8-4-5-6-3 is our stock firing order. So I pealed the tape off right side of the block, and popped the crank and cam senders out. Rolled #1 up to TDC and check both holes for any of our wheel markings. Nothing jumped out. Even pulled... -
LLY Ficm
Ok believe I've solved the TDC vs reluctor gaps deal And starting a pool on what cylinder is closest linked to the crank notch... So place your bets. Hint, the cam notch is not the key to anything. It's actually 15 teeth off TDC. I pulled sensors on the boat motor with heads off and gave it well...