2006 Bonneville T100 Intermittent Stalling

Discussion in 'Technical Help' started by Docsabre, Feb 3, 2024.

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  1. Docsabre

    Docsabre New Member

    Feb 3, 2024
    12
    3
    California
    New owner of 2006 T-100. It needed carb overhaul and mechanic identified intermittent stalling with no spark. After a period of time it would start without issues. He said coil checked ok. He found it needed a new crank position switch. Installed OEM CPS and it ran well. On the way back from his shop (in pouring rain of course) it died again. After 2 minutes it cranked with no problem. Today I rode it 3 miles in dry sunny weather and it again shut off with no warning as if you had hit the kill switch. After 2 minutes it cranked, no problem and I rode 16 fun miles.

    I am at a loss why it starts and runs perfectly, shuts off suddenly, then starts up easily and runs perfectly.

    Thoughts?
     
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  2. 243jimb

    243jimb Member

    Nov 27, 2018
    3
    8
    Canada
    When the engine dies, does the tachometer needle drop to zero?
     
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  3. Docsabre

    Docsabre New Member

    Feb 3, 2024
    12
    3
    California
    Haven’t noticed. Next time it does I’ll check. The tachometer should slowly wind down as the engine revs slow. If the tach stops suddenly would that indicate a more central electrical problem affecting both the tach circuit AND the ignition circuit?
     
  4. 243jimb

    243jimb Member

    Nov 27, 2018
    3
    8
    Canada
    If the tach drops to zero and the engine is still turning at speed then yes, it would point to an electrical problem either a loose connection, crank sensor or ignition module.
     
  5. Docsabre

    Docsabre New Member

    Feb 3, 2024
    12
    3
    California
    It has a new OEM crank position sensor installed.
     
  6. 243jimb

    243jimb Member

    Nov 27, 2018
    3
    8
    Canada
    I noticed that. It seems like it's electrical and it just a question of which part.
     
  7. Docsabre

    Docsabre New Member

    Feb 3, 2024
    12
    3
    California
    My mechanic said the coils checked out. Took it for a 20 mile ride yesterday without any problems.
     
  8. Docsabre

    Docsabre New Member

    Feb 3, 2024
    12
    3
    California
    After a few more stalls I went ahead and replaced the coil with a Nology Profire coil and it works fine.
     
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