help! need ideas please!
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Joined: May 2008
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help! need ideas please!
02 F4i
I've had this issue now for a few months. battery wasn't charging. I could ride for about 30 minutes before I noticed the bike bucking, and the gauges dim.
Things I've done in an attempt to solve issue.
new battery
battery terminals ARE tight
replaced r/r AND stator yesterday, even though old stator resistances were within tolerance and r/r voltage was in tolerance
measured a 1mA draw with the bike off (negative terminal)
I thought this would've fixed things, but apparently not.
i started the bike up, a healthy start. I let it idle for 15 minutes in my driveway. Got on the bike and headed up the street. I came to the stop sign. As I let the clutch out, the bike died. Tried to start the bike, but the starter turned slowly. I ran home, got the car, with the car off, i jumped the bike and rode the bike home.
What am I missing as far as things to check?
-where are all the grounds on this bike?
-YES, THE BATTERY TERMINALS ARE CLEAN AND TIGHT
any help or suggestions would be appreciated. I'm about ready to give up and take this to a bike shop.
I've had this issue now for a few months. battery wasn't charging. I could ride for about 30 minutes before I noticed the bike bucking, and the gauges dim.
Things I've done in an attempt to solve issue.
new battery
battery terminals ARE tight
replaced r/r AND stator yesterday, even though old stator resistances were within tolerance and r/r voltage was in tolerance
measured a 1mA draw with the bike off (negative terminal)
I thought this would've fixed things, but apparently not.
i started the bike up, a healthy start. I let it idle for 15 minutes in my driveway. Got on the bike and headed up the street. I came to the stop sign. As I let the clutch out, the bike died. Tried to start the bike, but the starter turned slowly. I ran home, got the car, with the car off, i jumped the bike and rode the bike home.
What am I missing as far as things to check?
-where are all the grounds on this bike?
-YES, THE BATTERY TERMINALS ARE CLEAN AND TIGHT
any help or suggestions would be appreciated. I'm about ready to give up and take this to a bike shop.
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I don't have enough experience with bikes yet to pinpoint something for you. However, working on my cars and trucks I would always check the ground points.
Anywhere there might be a chassis ground I would clean and tighten that. Bad grounding in modern vehicles can lead to odd computer issues and in older vehicles tended to cause problems similar to what you describe.
I'm not sure if that is really the issue, but it surely wouldn't hurt to check out.
Anywhere there might be a chassis ground I would clean and tighten that. Bad grounding in modern vehicles can lead to odd computer issues and in older vehicles tended to cause problems similar to what you describe.
I'm not sure if that is really the issue, but it surely wouldn't hurt to check out.
Senior Member
Joined: Apr 2008
Posts: 2,492
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From: Northern Michigan
have you measured your voltage at the battery terminals when the bike is running and with it off?
If your seeing less than 13 volts or so with the bike at 2000 rpms, you still have a charging issue. You should be seeing just over 14 volts if everything is charged. If your seeing over 15, your rectifier is not working.
Also, I would double check the connector that plugs into your RR. The pins inside can become corroded, burn, or loosen up. Sometimes, the little clips that hold the pins in place snap off, and the pins slide back just enough to no longer make contact. You plug in the plug think its good, no realizing a pin may not be making contact inside.
Also, check the battery wire on the terminal and make sure you can't move it. I've seen some batterys have bolts that are too long and they bottom out in the terminal. You think the bolt is tight, but its just bottomed out, leaving the wire a little loose. Probably not the case, but I've seen on several batteries.
If your seeing less than 13 volts or so with the bike at 2000 rpms, you still have a charging issue. You should be seeing just over 14 volts if everything is charged. If your seeing over 15, your rectifier is not working.
Also, I would double check the connector that plugs into your RR. The pins inside can become corroded, burn, or loosen up. Sometimes, the little clips that hold the pins in place snap off, and the pins slide back just enough to no longer make contact. You plug in the plug think its good, no realizing a pin may not be making contact inside.
Also, check the battery wire on the terminal and make sure you can't move it. I've seen some batterys have bolts that are too long and they bottom out in the terminal. You think the bolt is tight, but its just bottomed out, leaving the wire a little loose. Probably not the case, but I've seen on several batteries.
Last edited by justasquid; Sep 14, 2010 at 06:04 PM.
Thread Starter
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Member
Joined: May 2008
Posts: 66
Likes: 3
have you measured your voltage at the battery terminals when the bike is running and with it off?
If your seeing less than 13 volts or so with the bike at 2000 rpms, you still have a charging issue. You should be seeing just over 14 volts if everything is charged. If your seeing over 15, your rectifier is not working.
Also, I would double check the connector that plugs into your RR. The pins inside can become corroded, burn, or loosen up. Sometimes, the little clips that hold the pins in place snap off, and the pins slide back just enough to no longer make contact. You plug in the plug think its good, no realizing a pin may not be making contact inside.
Also, check the battery wire on the terminal and make sure you can't move it. I've seen some batterys have bolts that are too long and they bottom out in the terminal. You think the bolt is tight, but its just bottomed out, leaving the wire a little loose. Probably not the case, but I've seen on several batteries.
If your seeing less than 13 volts or so with the bike at 2000 rpms, you still have a charging issue. You should be seeing just over 14 volts if everything is charged. If your seeing over 15, your rectifier is not working.
Also, I would double check the connector that plugs into your RR. The pins inside can become corroded, burn, or loosen up. Sometimes, the little clips that hold the pins in place snap off, and the pins slide back just enough to no longer make contact. You plug in the plug think its good, no realizing a pin may not be making contact inside.
Also, check the battery wire on the terminal and make sure you can't move it. I've seen some batterys have bolts that are too long and they bottom out in the terminal. You think the bolt is tight, but its just bottomed out, leaving the wire a little loose. Probably not the case, but I've seen on several batteries.
Battery off... 12.86V
Bike running... 14.4-14.6V
The stator and rectifier are brand new, and they plug into each other. The white plug is snug, and I put a wire tie through to ensure the black plug of the r/r provides a secure connection to the rest of the wiring harness. I will re-investigate the pins, but I didn't see any bent nor wires that are pushed out the back of the plug.
and no, the bolts are the right size, nice and snug, can't move the battery wires.
this is a head-scratcher! thanks for the ideas!
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