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Bypass vibrator?
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mhuppertz
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PostPosted: Tue Mar 28, 2017 7:37 am    Post subject: Bypass vibrator? Reply with quote

I bought a new fuel sending unit (Mexico) and not the gauge reads empty most of the time, I ordered a Chinese vibrator which in on a slow boat... was wondering if it is possible to bypass the vibrator without damaging anything?
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busdaddy
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PostPosted: Tue Mar 28, 2017 7:58 am    Post subject: Re: Bypass vibrator? Reply with quote

Don't do it, the vibrator is a voltage regulator, bypassing it may result in smoke.
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Tim Donahoe
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PostPosted: Tue Mar 28, 2017 8:46 am    Post subject: Re: Bypass vibrator? Reply with quote

And "smoke" equals burnt wires in your gauge and sender rheostat.

Wait for the vibrator.

Tim
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helowrench
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PostPosted: Tue Mar 28, 2017 5:47 pm    Post subject: Re: Bypass vibrator? Reply with quote

busdaddy wrote:
Don't do it, the vibrator is a voltage regulator, bypassing it WILL result in smoke.

it takes about 10 minutes, but it will let the smoke out.
We will not discuss how I know this.
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gt1953
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PostPosted: Tue Mar 28, 2017 6:44 pm    Post subject: Re: Bypass vibrator? Reply with quote

See when the assembly of most electrical/electronic things made all have the puff of smoke in them. This is one item you don't want to let the smoke out of. Go to a swap meet and source out a used speedometer for future parts.
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busdaddy
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PostPosted: Tue Mar 28, 2017 6:48 pm    Post subject: Re: Bypass vibrator? Reply with quote

helowrench wrote:
busdaddy wrote:
Don't do it, the vibrator is a voltage regulator, bypassing it WILL result in smoke.

it takes about 10 minutes, but it will let the smoke out.
We will not discuss how I know this.

Was it similar to this by any chance? Wink

Image may have been reduced in size. Click image to view fullscreen.


Or this?

Image may have been reduced in size. Click image to view fullscreen.


Or maybe this?

Image may have been reduced in size. Click image to view fullscreen.

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goober
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PostPosted: Tue Mar 28, 2017 7:46 pm    Post subject: Re: Bypass vibrator? Reply with quote

My limited experience with a Bug gas gauge is, if you apply a direct 12v to the gauge the needle will go instantly to full. If you don't remove the 12v after about 1 second, the 12v will cook the fine heating wire wrapped around the small bi-metal strip that activates the needle. Alas, smoke.

Like others have said, ask me how I know.
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Tom Butler
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PostPosted: Tue Mar 28, 2017 8:08 pm    Post subject: Re: Bypass vibrator? Reply with quote

goober wrote:
My limited experience with a Bug gas gauge is, if you apply a direct 12v to the gauge the needle will go instantly to full. If you don't remove the 12v after about 1 second, the 12v will cook the fine heating wire wrapped around the small bi-metal strip that activates the needle. Alas, smoke.

Like others have said, ask me how I know.


How do you know?
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