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2006 Roadstar Silverado
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dont laugh could a faulty coil send a corrupted signal to the ecm and the ecm then turn off a coil?
that can't happen because both coil terminals are primary, one terminal has direct batt voltage the other receives the pulse signal from the ecm. the only thing that leaves the coil is high energy to the plug.
 

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one signal makes them dual fire.
so, the ecm could get a signal from rpm plus whatever gear the bike is in and if its over the limit shut down no. one cylinder.
the ecm does'nt know what gear the bike is in it would go by rpm only. am i right?
 

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one signal makes them dual fire.
so, the ecm could get a signal from rpm plus whatever gear the bike is in and if its over the limit shut down no. one cylinder.
the ecm does'nt know what gear the bike is in it would go by rpm only. am i right?
i would think the ecm reads the rpm by how fast the the flywheel is passing the pickup coil.
 

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keep hearing about this pickup coil. i guess i'm going to read up on it. seems the pickup coil and a dirty carb are like the two main problems with the bike, besides winter0:)
 

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keep hearing about this pickup coil. i guess i'm going to read up on it. seems the pickup coil and a dirty carb are like the two main problems with the bike, besides winter0:)
what get confusing is the pickup coil is also called a pulse generator, trigger coil, crankshaft position sensor. you named two common problems the third is a leaky neutral safety switch or the petcock..lol watch this video on TCI ignitions just put the flywheel in place of the dist rotor
. on your bike the magnet is built into the flywheel and the ignitor (transistor) is the ecm.
 

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Having the same problem.. Anyone know where I can buy one for an 03 v star 650 custom? I can only seem to find one for year 04 and newer.
get one at a dealership (OEM) because it's a real pain to change it especially if your doing it for the first time. the screws that hold the pickup are have locktight on them and they are japanese standard phillip heads not U.S standard and they are tough to remove. i replaced mine with allen heads for easier removal. only use an OEM pickup because there's just to much labour to replace these things to have to do it again because of a failed cheesy aftermarket one. you can get one at your dealership or an online store like babbits on line parts ......2000 Yamaha V-STAR CLASSIC (XVS650AM) Generator | Babbitts Yamaha Partshouse and this link shows how to do it......VSTAR Custom if the pickup wires also go through stator wire grommet you can release pickup wires from the plug then work them through the grommet just make sure they go back into the same position in the plug, it's easy to reverse them because they are the same color so mark one of em then mark the plug where it came out.
 
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