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SOS: 2021 m8000 electrical fun

Old & slow

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You are going to have to address the codes first. The P1004 would explain the elevated idle, check it for wiring or hose issues. I would do the same for the oil pump. The ISC is located on top of the air intake under the pipe and has two hoses running to the throttle body. Good Luck and keep us updated
 

Clark42

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Not many new findings, had some other things going on and haven't been able to work on it. I verified the ground coming off the stator is functioning. Got a second opinion from a friend, he pointed out that I used a fairly liberal amount of dielectric grease on the VR/stator connections, probably too much. Also some of the grease was separating - forming a part gel/part liquid substance. I took the connections apart, cleaned them and the sled reacted well to it. Idling normally, running more consistently, codes all gone. It had some hiccups on a test ride still. Before going to work today I did a bit more thorough cleaning via blowing them out with connection cleaner and I am letting them air dry. When I got home tomorrow I'm going to take the tank off and go though the rest of the wiring harness looking for chaffing.

You are going to have to address the codes first. The P1004 would explain the elevated idle, check it for wiring or hose issues. I would do the same for the oil pump. The ISC is located on top of the air intake under the pipe and has two hoses running to the throttle body. Good Luck and keep us updated
I'll explore the codes, however, I never had codes prior to this pull cord issue, I'm leaning towards the codes being associated and solved with this electrical problem. My timing sensors were pretty jacked up so I'm fairly certain that explains the P1004 code. ISC was probably confused because it wasn't getting accurate readings off the flywheel. 1003 (oil pump outlier) and 1005 (low voltage) I'm guessing lead back to stator function, or lack of.

Obviously I'm not a technician, but these are my thoughts and gut feeling. All opinions and advice is welcomed and much appreciated. Thanks all!
 

summ8rmk

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First, i would check all connectors to make sure pins were not pulled out, then i would remove the loom from the wires and thoroughly inspect.

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Old & slow

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Feb 18, 2017
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Not many new findings, had some other things going on and haven't been able to work on it. I verified the ground coming off the stator is functioning. Got a second opinion from a friend, he pointed out that I used a fairly liberal amount of dielectric grease on the VR/stator connections, probably too much. Also some of the grease was separating - forming a part gel/part liquid substance. I took the connections apart, cleaned them and the sled reacted well to it. Idling normally, running more consistently, codes all gone. It had some hiccups on a test ride still. Before going to work today I did a bit more thorough cleaning via blowing them out with connection cleaner and I am letting them air dry. When I got home tomorrow I'm going to take the tank off and go though the rest of the wiring harness looking for chaffing.


I'll explore the codes, however, I never had codes prior to this pull cord issue, I'm leaning towards the codes being associated and solved with this electrical problem. My timing sensors were pretty jacked up so I'm fairly certain that explains the P1004 code. ISC was probably confused because it wasn't getting accurate readings off the flywheel. 1003 (oil pump outlier) and 1005 (low voltage) I'm guessing lead back to stator function, or lack of.

Obviously I'm not a technician, but these are my thoughts and gut feeling. All opinions and advice is welcomed and much appreciated. Thanks all!
Most likely you are right that they are connected but you need to get rid of the codes and see if the problem still exists. Hopefully not! Kinda amazing what a little piece of rope can do. good luck.
 

Clark42

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Most likely you are right that they are connected but you need to get rid of the codes and see if the problem still exists.
Ahh gotcha! I'll check it out! Thanks.

Kinda amazing what a little piece of rope can do. good luck.
Yeah right! At this point, it's difficult to differentiate what is out of place directly from the rope, or just from tearing it open several times to work on it.
 

Clark42

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Just an update. Got the sled out a few times over the last week and it's ran flawless. In hindsight, I think I should've started this whole troubleshooting process by replacing the timing sensors, and definitely not going to use dielectric grease on connections in the future! Thanks for all the input
 
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