1998 SPEEDO AND TACH


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RBGERSON
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1998 SPEEDO AND TACH

Post by RBGERSON » Thu Oct 04, 2018 9:11 am



Over the last few weeks my tach didn't register anything until I blimped the throttle on morning start ups. I ignored it..Anyway yesterday it did it again but didn't register even after the blimp..I took off away noticed the speedo wasn't registering either..but after 30 second both started working and kept working for the ride with several stops and restarts.

So ideas on what to look at first..gear at the wheel?? for speedo; tach ????


HAD LOTS OF GOLDWING 75-83
NOW INTO 1500'S..RIDING A 1998 SE

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GlimWas
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Re: 1998 SPEEDO AND TACH

Post by GlimWas » Thu Oct 04, 2018 11:07 am

Speedo is probably the cable that's worn or something like that, the tach might be a connector behind the dash, or more probable the sensor on the motor. Mine will often after a warm start not give a sign of life until revved a bit
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RBGERSON
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Re: 1998 SPEEDO AND TACH

Post by RBGERSON » Thu Oct 04, 2018 1:16 pm

Anyone have a diagram of the tach wiring/sensor??
HAD LOTS OF GOLDWING 75-83
NOW INTO 1500'S..RIDING A 1998 SE

FAIR WINDS,
RB

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MikeB
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Re: 1998 SPEEDO AND TACH

Post by MikeB » Thu Oct 04, 2018 1:46 pm

From what I have seen while working on the bike, the speedometer is strictly mechanical as to needle movement. The Tach is electrical from the crank speed sensor through the ECM.
Is this what you are looking for?


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RBGERSON
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Re: 1998 SPEEDO AND TACH

Post by RBGERSON » Thu Oct 04, 2018 5:34 pm

Yep, doesn't look like fun tracking this down...if the tach is all electrical why would it be slow to activate most electrical stuff is good or bad..except loose wiring...
HAD LOTS OF GOLDWING 75-83
NOW INTO 1500'S..RIDING A 1998 SE

FAIR WINDS,
RB

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MikeB
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Re: 1998 SPEEDO AND TACH

Post by MikeB » Thu Oct 04, 2018 5:51 pm

RBGERSON wrote:
Thu Oct 04, 2018 5:34 pm
...except loose wiring...
Sounds like you may have hit it on the head.
MikeB
Tacoma, WA, USA

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RBGERSON
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had every year from 75 to 83

Re: 1998 SPEEDO AND TACH

Post by RBGERSON » Fri Oct 05, 2018 1:45 pm

Last two days it's working perfectly!! Going to be hard to track this down until it totally stops working.
HAD LOTS OF GOLDWING 75-83
NOW INTO 1500'S..RIDING A 1998 SE

FAIR WINDS,
RB

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Re: 1998 SPEEDO AND TACH

Post by WingAdmin » Mon Oct 08, 2018 12:19 pm

My money is on a physically sticky tach needle. The higher the engine RPM, the more voltage being applied to the windings that actuate the needle, the more magnetism generated, and the farther the needle moves.

Starting the engine doesn't provide enough force to unstick the needle, but give it a blip gives the needle a harder physical push, breaking it free.



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