919 - tach problems - Wrist Twisters
 
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post #1 of 23 Old 08-01-2008, 10:04 AM Thread Starter
 
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919 - tach problems

I have a 2005 919 with just under 4,000 miles that is having tach problems.

When turning on the ignition sometimes the needle does not sweep the guage is it is supposed to and if you start it up the needle does not move for the first bit. When turning the ignition on and if the needle does not sweep I can turn it off, smack the tach, try it again and it usually works that time.

Has anyone had this problem? Any tips as to what I should be looking for when I open it up?

Any help you can provide would be appreciated. Thanks.

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post #2 of 23 Old 08-01-2008, 11:05 AM
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Interesting... I don't think mine ever sweeps the guage. I'll check when i get home.

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post #3 of 23 Old 08-01-2008, 11:49 AM
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Quote:
Interesting... I don't think mine ever sweeps the guage. I'll check when i get home.
I have an '02 919 and Im about 100% sure the dials don't sweep the guages

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post #4 of 23 Old 08-01-2008, 11:58 AM
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post #5 of 23 Old 08-01-2008, 12:02 PM
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'07 here, does it every time. Maybe it came with the clock.

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post #6 of 23 Old 08-01-2008, 12:03 PM
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sounds internal in the clock. which means accept or replace. or use your ear.

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post #7 of 23 Old 08-01-2008, 12:04 PM
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sounds like maybe the bike was dropped, but then again i'm known for superman-jumping to conclusions.

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post #8 of 23 Old 08-01-2008, 12:14 PM
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Sounds like a loose connection some where in the guage. You need to open up the guage and make sure all connectors are connected tight. I have 30K miles on my bike it sweeps. Only thing I had was the speedo light went out so I replaced both since I had it a part.

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post #9 of 23 Old 08-01-2008, 12:15 PM
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My 2004 sweeps the guages at "ignition on" also.

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post #10 of 23 Old 08-01-2008, 01:02 PM
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ditto.
Quote:
Originally Posted by support_six View Post
My 2004 sweeps the guages at "ignition on" also.

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post #11 of 23 Old 08-01-2008, 02:19 PM
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"it's a game, like twister, but you JUMP...to conclusions"
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post #12 of 23 Old 08-01-2008, 02:47 PM
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post #13 of 23 Old 08-01-2008, 02:50 PM
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My '03 does not 'sweep' on ignition (just when I twist the grip!)
I agree with Wazoo919 & the loose connection theory.
Might not hurt to invest in some dialectic grease when/if you dig into it.

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post #14 of 23 Old 08-01-2008, 03:31 PM
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Regardless of whether the needles usually sweep when the key is turned on (my '02 doesn't), if there is a loose screw attaching the tach meter movement to the circuit board it won't operate properly. If the speedo is any indication the cosine phase signal is delivered to the meter by the screws while the sine phase is by a pair of pins. Expose the back of the board and check the screws -- it certainly sounds like tightening them will take care of the problem.

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post #15 of 23 Old 08-01-2008, 09:33 PM Thread Starter
 
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Wow, thanks for the help.

I assume that the board is inside the guage pod but what is dialectic grease and what do I do with it?

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post #16 of 23 Old 08-01-2008, 11:23 PM
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Quote:
Originally Posted by Cutter View Post
Wow, thanks for the help.

I assume that the board is inside the guage pod but what is dialectic grease and what do I do with it?
Yes, it is in the gauge pod, and the meter mounting screws will be pretty obvious, just don't overtighten them. Snugged down will be sufficient.

Dielectric grease should be available at any good electronic parts store, but probably not Radio Shack (but you never know). It is specifically formulated to not react to the metal of most connectors, which normal grease can do, and prevents water from entering connections and causing corrosion. It can be applied liberally to any electrical connection including the block connectors, but should not be applied to incandescent bulb bases: the heat may break it down to an insulator. There should be instructions on its use and application on the package.

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post #17 of 23 Old 08-02-2008, 02:28 PM
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The "D" Grease

Go to any Auto Zone, Advance, Pep Boys, or O'Reillys. Look at the front counter at check-out. They have it in little one use packs for about .50. They also have the same sizes of anti-seize, hand cleaners, ect. It wouldn't hurt to throw a few pacs in your car and bike.

[
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post #18 of 23 Old 08-02-2008, 02:38 PM
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AutoZone has it, in single use packets or larger containers. The single use packs are 1.19 here in Oklahoma.

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post #19 of 23 Old 11-28-2008, 07:52 AM
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my 04 sweeps the gauges

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post #20 of 23 Old 11-28-2008, 11:08 AM
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I've used Vaseline as a substitute for dielectric grease in the past with good success. Vaseline is easier to clean than dielectric grease, but it melts at a lower temperature (heat should not be an issue on the back of the speedo). I keep a tube of dielectric grease or Vaseline nearby whenever I do anything on the bike, and I compulsively coat every connector.

Note: Some people say Vaseline when they mean 'Vaseline Intensive Care', which is skin cream. What you want is Vaseline Petroleum Jelly, a translucent greasy substance, not skin cream. Moisturizer is not good for your electrical connections.

Incidentally, 'dielectric' is pretty much a synonym for 'insulating' in this context. 'Dielectric' refers to the behaviour of atoms within an electrical field: a dielectric responds to an electric field by generating a dipole moment (uneven distribution of charged particles), while a conductor allows the electrons to move free of their atoms and conduct electricity. So if you don't have a conductor, you have a dielectric.

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post #21 of 23 Old 11-28-2008, 11:44 AM
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Quote:
Originally Posted by prtsimmons View Post
I've used Vaseline as a substitute for . I keep a tube of dielectric grease or Vaseline nearby whenever I do anything on the bike.

Note: Some people say Vaseline when they mean 'Vaseline Intensive Care', which is skin cream. What you want is Vaseline Petroleum Jelly, a translucent greasy substance, not skin cream. Moisturizer is not good for your electrical connections.
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post #22 of 23 Old 11-28-2008, 01:57 PM
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post #23 of 23 Old 11-29-2008, 05:17 PM
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02/03: The gauges do not sweep

04-07(with clock): gauges sweep

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