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Anyone good with these? I got an issue with my crank/cam I can't seem figure out, made a thread in the electrical section and not having any luck, thought you Ls guys might be able to offer more insight
Ls motor and holley efi
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Danny Holley guru is real good with them and 2stroke on here. Danny will chime in for you.
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I think I stumped him, he stopped responding to my thread a while back
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Having the same issue.. no fuel or spark.
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My combo has been running for years, I swapped heads and updated firmware and now it has issues reading the crank only 1 or 2 revolutions per pass
X2 that is what I'm thinking.
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If you could post up everything you've checked, screen shots of your system logs etc I'm sure someone might be able to help. Most times I've found issues like these are hardware related, bad wiring job, sensor failures, reluctor wheel problems etc. Other times I've been able to log in and immediately see odd sensor values that the owner overlooked.
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I have a internal billet 24x reactor welded to the crank and air gap was .082 I since modified it to .32,
At first my original sensor was terrible, got a Borg Warner and the issue went to only one miss per pass at the track, then holley told me to put an Ac delco sensor in it and I tried 2, neither would start the car, they sound like they were 180 out
Tune started as v2 when I uploaded the firmware and opened my old tune it said it was adjusting it to be compatible with v3
Only thing changed since it was running fine was heads/intake and the firmware
The system log has issues with the crank and occcasionally the cam, here's one example (I have probably 30)
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I've tried 2 other Borg crank sensors
I've tried it without the cam sensor
Tried grounding the coil pack bracket
Tried higher resistance wires
Tried new wires
Changed plugs
Checked wiring
Unplugged boost noids and moved their 12v
New battery for the car
Checked for loose power/ground in harness
Checked air gap
Seems turning the boost up makes it worse(misfire more)
At first my original sensor was terrible, got a Borg Warner and the issue went to only one miss per pass at the track, then holley told me to put an Ac delco sensor in it and I tried 2, neither would start the car, they sound like they were 180 out
Tune started as v2 when I uploaded the firmware and opened my old tune it said it was adjusting it to be compatible with v3
Only thing changed since it was running fine was heads/intake and the firmware
The system log has issues with the crank and occcasionally the cam, here's one example (I have probably 30)
I've tried 2 other Borg crank sensors
I've tried it without the cam sensor
Tried grounding the coil pack bracket
Tried higher resistance wires
Tried new wires
Changed plugs
Checked wiring
Unplugged boost noids and moved their 12v
New battery for the car
Checked for loose power/ground in harness
Checked air gap
Seems turning the boost up makes it worse(misfire more)
I had an odd issue with mine too. Ended up being the cam sensor wire i had zip tied to the starter power wire. Was getting lots of interference. Moved them away from each other and it was good to go. It wouldnt rev past about 5k. Also had a similar issue when my plug gap was too wide. Lowered it to 16 and it revved fine.
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840 Posts
I tried it with the cam sensor turned off in the tune, but did not unplug it, it's zipped tied along the pan then goes up the drivers rear of the block near the alternator wire into the cabin through the same hole as the alternator wire, but it has always been this way
The crank I have tied to the starter wire, have tried it tied away from it also
Plug gap is .018
Thing to mention is at wastegate 4~pounds it only acts up 1 out of 10 times
If I add 5 psi co2 to the gate it acts up 9/10 times
The crank I have tied to the starter wire, have tried it tied away from it also
Plug gap is .018
Thing to mention is at wastegate 4~pounds it only acts up 1 out of 10 times
If I add 5 psi co2 to the gate it acts up 9/10 times
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Damn I'm having good luck with mine still on v2 though.
Post up some screen shots of the holley
Post up some screen shots of the holley
Did you check the runout on the reluctor wheel before you put the motor together. Almost sounds exactly like mine, except I was able to find a crank sensor that would start it. However, once under big power, any flex at all in the crankshaft would shut it down. My crankshaft reluctor wheel was .020 to .025. Billet 24x deal installed by LME. LME assured me and my engine builder that amount of runout was completely fine. Ass holes.
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If that is an actual raw signal from either crank or cam, then in no way is that correct or usable.I have a internal billet 24x reactor welded to the crank and air gap was .082 I since modified it to .32,
At first my original sensor was terrible, got a Borg Warner and the issue went to only one miss per pass at the track, then holley told me to put an Ac delco sensor in it and I tried 2, neither would start the car, they sound like they were 180 out
Tune started as v2 when I uploaded the firmware and opened my old tune it said it was adjusting it to be compatible with v3
Only thing changed since it was running fine was heads/intake and the firmware
The system log has issues with the crank and occcasionally the cam, here's one example (I have probably 30)
![]()
I've tried 2 other Borg crank sensors
I've tried it without the cam sensor
Tried grounding the coil pack bracket
Tried higher resistance wires
Tried new wires
Changed plugs
Checked wiring
Unplugged boost noids and moved their 12v
New battery for the car
Checked for loose power/ground in harness
Checked air gap
Seems turning the boost up makes it worse(misfire more)
The hall sensors on these engines should produce a simple digital off/on signal, square wave. Not a sawtooth of any kind.
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840 Posts
No that's is the crnak position signal, I can post an actual crank log also
I did not chexk runout, as I've never had an issue but my car doesn't turn off it simply mis counts one rotation, I've spun it 8500 without an issue, sometimes it acts up at 5500
I did not chexk runout, as I've never had an issue but my car doesn't turn off it simply mis counts one rotation, I've spun it 8500 without an issue, sometimes it acts up at 5500
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840 Posts
I can upload v2 firmware again and go back to an old file without a ton of work
Here's a log of the actual crank sensor shown, I don't see an issue and I'm not sure how to read it, unfortunately the 2 guys at holley I was talking to about this stopped responding weeks ago so I'm stuck figuring it out myself
![]()
Here's a log of the actual crank sensor shown, I don't see an issue and I'm not sure how to read it, unfortunately the 2 guys at holley I was talking to about this stopped responding weeks ago so I'm stuck figuring it out myself
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upload the log rather than a partial screenshot. But at least it is start to look a little more sensible.
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How do you upload a complete log?
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