Issues after cam upgrade
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Novice
Joined: Jul 2022
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From: PA
Issues after cam upgrade
Looking for suggestions. I have a 2020 Road King, 107, RDRS. I installed a new cam and lifters with adjustable pushrods, 5.5 fuel injectors, downloaded the new tune on PV3 tuner from my tuning company. Bike runs REALLY rough on cold start, once it warms up, idles rough but runs good. The traction control light stays on and the red LED stays on. I checked the codes and its showing U0100c under the ABS tab. I'm 99% sure there is nothing mechanically wrong with it, I've done cams before without incident. Does this seem like a tune issue? I've never messed with RDRS systems before and the stage 1 tune ran great. What are your thoughts?
Stellar HDF Member
Joined: Aug 2020
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From: College Station, TX
That's a generic code meaning the ECM has lost communication with the rest of the system.
You might speak with the people who supplied the tune you applied to the ECM about the running / starting problems, DTC code and see what they have to say. And after you speak with them, I'd try to clear the code and run it again to see if it returns.
Paul
You might speak with the people who supplied the tune you applied to the ECM about the running / starting problems, DTC code and see what they have to say. And after you speak with them, I'd try to clear the code and run it again to see if it returns.
Paul
Thread Starter
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Novice
Joined: Jul 2022
Posts: 24
Likes: 10
From: PA
That's a generic code meaning the ECM has lost communication with the rest of the system.
You might speak with the people who supplied the tune you applied to the ECM about the running / starting problems, DTC code and see what they have to say. And after you speak with them, I'd try to clear the code and run it again to see if it returns.
Paul
You might speak with the people who supplied the tune you applied to the ECM about the running / starting problems, DTC code and see what they have to say. And after you speak with them, I'd try to clear the code and run it again to see if it returns.
Paul
Stellar HDF Member
Joined: Aug 2020
Posts: 3,159
Likes: 2,202
From: College Station, TX
That it still starts is a good sign that it's nothing too serious. Like possibly something with the tune.
If all else fails, you could flash the original tune (which should have been automatically saved before the new flash was applied) back to the ECM. But I'd wait until the company responds.
Paul
If all else fails, you could flash the original tune (which should have been automatically saved before the new flash was applied) back to the ECM. But I'd wait until the company responds.
Paul
Road Master
Joined: Jun 2013
Posts: 1,057
Likes: 953
From: Sarasota Florida
This link will give you some good background on RDRS tuning
https://university.fuelmotousa.com/a...-power-vision/
https://university.fuelmotousa.com/a...-power-vision/
Thread Starter
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Novice
Joined: Jul 2022
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From: PA
well I did check the "yes" box when it asked if it had RDRS, but that's what I'm thinking, maybe they just have me the wrong tune.
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Thread Starter
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Novice
Joined: Jul 2022
Posts: 24
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From: PA
This link will give you some good background on RDRS tuning
https://university.fuelmotousa.com/a...-power-vision/
https://university.fuelmotousa.com/a...-power-vision/
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Road Warrior
Joined: May 2007
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From: Arkansastan
FM is a great company. They should get you back on track tune-wise. Please let us know how things work out.
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Novice
Joined: Jul 2022
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From: PA
yea, every performance upgrade I've done was through them. They are a great company, and your right, I'm sure they will get it all straitened out. I'll post what happens.
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