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Tx Bohemian
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« on: May 31, 2011, 06:10:34 AM » |
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The last couple of times I rode my '99 Standard the tach will drop to zero for about 5 seconds then pop back up. It will do this a couple of times then hold steady. Not sure how often this happens as I don't normally watch my tach continuosly.
Both times I was traveling around 3000 RPMs, not sure if this has anything to do with it but that was what it was showing when this happened.
Did a quick search but only thing I found was tachs that didn't work at all. These did however mention "bad grounds" and I did have a few issues with bad grounds since I bought this bike (it sat up for 2-1/2yrs before I bought it). But these were on aftermarket items like horns and driving lights.
Anyone have any suggestions or experienced any thing like this?
Can anyone tell me where the ground is located for the tach?
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Logged
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Remember, if you are on a bike and wreck with a car no matter how "in the right" you are you are going to lose. RIDE LIKE EVERBODY IS OUT TO GET YOU!!
Al
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fast black
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« Reply #1 on: May 31, 2011, 09:50:00 AM » |
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I'm probably way wrong on this but I thought a bad or weak, battery or battery connection could cause this, but I think I read about this on this board in the past.
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Bobbo
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« Reply #2 on: May 31, 2011, 10:05:34 AM » |
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The tach needs over 12 volts to work. This usually means you have a bad power connection to the tach, or worse, your alternator is failing. When mine failed, the first symptom was a dead tach, even though it still ran.
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Tx Bohemian
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« Reply #3 on: June 01, 2011, 05:25:51 AM » |
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Thanks for the suggestions fellas.
The battery is only about a year old but I do realize they can go bad any time. It is put on a "battery tender" always when not being riden.
This bike has only 20K miles so hopefully it is not the alternator but I will check it. I checked it when I bought it about a year and a half ago and all was good then.
I'm planning to do some major work on the front end (replacing forks and trees) and when I do I'll check all the connections also since all that will have to come off for this work.
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Remember, if you are on a bike and wreck with a car no matter how "in the right" you are you are going to lose. RIDE LIKE EVERBODY IS OUT TO GET YOU!!
Al
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pBrain
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« Reply #4 on: May 05, 2012, 07:46:42 AM » |
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I'm getting this too. I have a new battery and tested the voltage. I think I'll put a gauges on the tach while the bike is running to see what voltage i'm getting.
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Chrisj CMA
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« Reply #5 on: May 05, 2012, 08:01:17 AM » |
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If the fusable link (55A metal fuse) is gone the alternator will not charge at all
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ryord
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« Reply #6 on: May 05, 2012, 11:02:14 AM » |
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I had the same thing happen, tach would be intermittent if I would tap on the side it would spin up, one day while ridding it at a steady speed the thing went all the way around to the other side of the rest. I took a magnet to get the needle around the tach. I ended up replacing the tachometer. I think it was about 125.00 at my local dealer. everything except the chrome housing put it on, works great ever since.
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Brian
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« Reply #7 on: May 06, 2012, 09:29:28 AM » |
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I only look at the tach while the bike is idling. I would like to check it with somthing to make sure it is even acurate. I suppose this would be another subject line. Suggestions here would be great.
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