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Old May 27, 2024 | 04:15 PM
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Friends 99 FLH standard just stopped running today. Bike is carbed. We trailered it home.
We have it narrowed down to either the cam position sensor or the crank sensor. Is there a way to test which sensor it could be ? Maybe volt meter on crank sensor and look for voltage ?
Kinda stuck right now with no service manual handy for us to look at. I think we put a crank sensor on it about 11 years ago , but both of us are to brain dead to remember which sensor we put on it last time. THANKS !
 
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Old May 27, 2024 | 06:26 PM
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Banking cam sensor the problem, and why HD did away with it on later carb models.
 
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Old May 27, 2024 | 07:17 PM
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Crank sensor outputs AC voltage. Did carbs have a cam sensor or just FI? My 2001 carb, does not. But FI that year did, or had it part of the year.
 
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Old May 27, 2024 | 08:49 PM
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Originally Posted by Rounders

Crank sensor outputs AC voltage. Did carbs have a cam sensor or just FI? My 2001 carb, does not. But FI that year did, or had it part of the year.

Yes, carbed bikes had it too.

Carbed bikes and Delphi EFI bikes did away with the cam sensor and went to only using the crank sensor in 2001...

The MM EFI bikes used the cam sensor. In 2001, the touring EFI bikes still used the MM EFI & cam sensor. When touring bikes went to the Delphi EFI in 2002, they lost the cam sensor.

To the OP FWIW.... I believe the newer ICMs suggested in the video in the above post are obsolete, and you would need to find a NOS unit or used unit to get one.... however...

On 1998-2000 carbed models, the Daytona Twin Tec TC-88 ignition module does not require the cam position sensor. It will work with, or without one. But if you leave the cam position sensor in the bike, and it shorts out, the TC-88 won't work until you disconnect the failed cam position sensor. They suggest disconnecting the cam sensor when you install the TC-88 on a bike with one. The TC-88 works off an algorithm based on the Crank Position sensor only, just like the 2001+ carbed & Delphi EFI bikes.

If you find you have a faulty Cam Position Sensor on your 1999 bike, you can just disconnect it, add a Twin Tec TC-88 ignition module, and you will never need to worry about the Cam Position Sensor again. Plus you will have an ICM with spark advance adjustability.

Check out the section with the heading, "What is the difference between 1998-2000 and 2001-2003 Twin Cam 88Ž models?"

https://daytona-twintec.com/faqs/tc88-ignition-faq/
 

Last edited by hattitude; May 27, 2024 at 09:00 PM.
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Old May 28, 2024 | 12:21 PM
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No one has the crank sensor in stock. Gonna just change the system over and get rid of the cam sensor. New system just uses information from the crank sensor. Thanks !
 
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