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All four spark plugs are cracked (Cracks that start at the top and run most of the length of the plug. - The upper porcelain section, not near the lower electrode)
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Replaced all four plugs. Still having the issue. Rechecked new plugs and they're no cracked. :facepalm:
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Still having issues. Total f****ing nightmare. Swapped the Toyota COPs for LS2 Coils. No help. Any experts in central/north NJ I can bring it to?
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Fwiw, I ran 0.022" gap on my plugs with truck coils.
I'll need to read up but you aren't noticing any sync losses when logging are you? |
Originally Posted by psyber_0ptix
(Post 1538705)
Fwiw, I ran 0.022" gap on my plugs with truck coils.
I'll need to read up but you aren't noticing any sync losses when logging are you? EDITx2: I've had this sync issue in the past when the car was running fine. It's unlikely related to this. |
Have you actually measured voltage at the battery with the engine running?
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Originally Posted by SpartanSV
(Post 1538738)
Have you actually measured voltage at the battery with the engine running?
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Any more logs you can share?
The amount of fluctuation in coolant temp and lack of change in MAT doesn't look right at all. |
I think you need to handle this issue a bit more meticulously, rather than just fishing for ideas and throwing parts at it.
I would propose to check all issues you see from the MS logs. For instance: wrong battery voltage reading could lead to incorrect dwell times and thus misfiring. Same applies to sync loss. Problems could get progressively worse, having seen it in the past is not a guarantee it will not cause issues. Do you have any recent logs after all the things you have fixed since your first post in this thread? |
4 Attachment(s)
Originally Posted by DaWaN
(Post 1538741)
I think you need to handle this issue a bit more meticulously, rather than just fishing for ideas and throwing parts at it.
I would propose to check all issues you see from the MS logs. For instance: wrong battery voltage reading could lead to incorrect dwell times and thus misfiring. Same applies to sync loss. Problems could get progressively worse, having seen it in the past is not a guarantee it will not cause issues. Do you have any recent logs after all the things you have fixed since your first post in this thread? Four Logs:
Also, here's a video of the issue. (Let me know if you can't see the video) It start happen at 5,100 and stays happening until I let out. Turn up and volume and listen closely. Again, this entire setup has no problem running 30+psi at 400whp. Then after taking it out from winter storage, it ran fine for a few pulls. Then started to do this slightly, then get worse and worse. It's so odd. |
You don't have any attached logs/links to logs.
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Originally Posted by SpartanSV
(Post 1538750)
You don't have any attached logs/links to logs.
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Your MAT sensor is not working. It's probably not your main issue but it definitely needs to be fixed.
You also have a lot more fluctuation on your coolant and tps sensors than you should. I would put a meter on the 5v reference from the megasquirt and see how much it's fluctuating with engine rpm. |
Originally Posted by SpartanSV
(Post 1538761)
Your MAT sensor is not working. It's probably not your main issue but it definitely needs to be fixed.
You also have a lot more fluctuation on your coolant and tps sensors than you should. I would put a meter on the 5v reference from the megasquirt and see how much it's fluctuating with engine rpm. Next I'll read what a 5V reference is, and how I can check it. I appreciate it. :skid: |
Your battery voltage reading is still broken, which is weird. Also I think 5.0ms of dwell on Toyota COPs is a bit too much dwell. Neither of those issues explain your issue. Can you elaborate a bit on your wiring issues? What was causing the short and what caused your MAT to not work? Any pictures of the ECU and wiring situation?
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Originally Posted by DaWaN
(Post 1538811)
Your battery voltage reading is still broken, which is weird. Also I think 5.0ms of dwell on Toyota COPs is a bit too much dwell. Neither of those issues explain your issue. Can you elaborate a bit on your wiring issues? What was causing the short and what caused your MAT to not work? Any pictures of the ECU and wiring situation?
Your battery voltage reading is still broken, which is weird. - Agreed. I'm not familiar with how to fix this so I'll have to read up Also I think 5.0ms of dwell on Toyota COPs is a bit too much dwell. - I was running 2.4ms dwell on the Toyota COP. With the LS2 Coils I'm now running 5.0ms (will likely bump it down to 4.5). Neither of those issues explain your issue. Can you elaborate a bit on your wiring issues? What was causing the short and what caused your MAT to not work? - There were at least two wiring issues: First there was a short caused by essentially an exposed wire. This wire WAS going to power an external MAP sensor. You can totally ignore this issue. It's been cared for and wasn't the start of anything ongoing. Second the actual connector on the MAT sensor was built correctly (the metal pins that the wires connect to were not the right ones). Any pictures of the ECU and wiring situation? - I can take a picture. Anything in particular? We talking the ECU itself or it connected under the dash? Thanks! |
https://cimg0.ibsrv.net/gimg/www.mia...3f17639897.png https://cimg1.ibsrv.net/gimg/www.mia...1d66cb1c4d.jpg |
Is vbatt still showing 17v?
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Originally Posted by gooflophaze
(Post 1539687)
Is vbatt still showing 17v?
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