Problems with VDO electric spedo
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Senior User
Joined: Oct 2005
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From: Livonia Michigan
Problems with VDO electric spedo
I have a set of VDO gauges in my 56,the problem is the spedometer, it won't work and the only time it will move is when the truck starts and then it goes all the way round to 120 and then back and stops.I can't easily get under to check where it goes to the trans but it connects I think with some kind of sender to my C6. Any ideas
Thanks
John
Thanks
John
Senior User
Joined: Nov 2001
Posts: 345
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From: oh
Speed-o won't work
Did the speedo ever work or is this a new problem? I have a vdo gauge set .The speedo instructions were a little confusing. They give 3 different methods of calibrations I used the MANUAL method and after 3 tries it worked. I became brain dead I guess. After it was done and working it was simple. What you have discribed so far is the way it supposed to work. Get out the instructions and reread them.
If this an old gauge w new problem you might check your HULL AFFECT SENSOR on Trans. This all works off elect. There is a three wire cable to gauge that plugs into speedo .Maybe this is loose. Do you still have instruction sheet? LOL caddy 53 chuck Centerburg Ohio
If this an old gauge w new problem you might check your HULL AFFECT SENSOR on Trans. This all works off elect. There is a three wire cable to gauge that plugs into speedo .Maybe this is loose. Do you still have instruction sheet? LOL caddy 53 chuck Centerburg Ohio
Logistics Pro
Joined: Feb 2005
Posts: 3,952
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From: Upper Left Coast
It may be useful to understand how a "Hall Effect Sensor" works.
Magnetic sensors simply detect a little magnet passing by a conductor. They are also known as "Hall Effect" sensors.
look here: http://en.wikipedia.org/wiki/Hall_effect_sensor for definitions and an animation of the concept.for an explanation.
The VDO electronic speedo simply counts pulses over a measured mile and displays the reults.
Here's a link to VDO's instructions http://www.egauges.com/pdf/vdo/0-515-012-051.pdf
You will need Adobe Acrobat Reader , or a similar Acrobat reader ( XPDF, KPDF etc, in Linux for example) to view it.
Regards,
Rick
Magnetic sensors simply detect a little magnet passing by a conductor. They are also known as "Hall Effect" sensors.
look here: http://en.wikipedia.org/wiki/Hall_effect_sensor for definitions and an animation of the concept.for an explanation.
The VDO electronic speedo simply counts pulses over a measured mile and displays the reults.
Here's a link to VDO's instructions http://www.egauges.com/pdf/vdo/0-515-012-051.pdf
You will need Adobe Acrobat Reader , or a similar Acrobat reader ( XPDF, KPDF etc, in Linux for example) to view it.
Regards,
Rick
Originally Posted by Caddy 53
Did the speedo ever work or is this a new problem? I have a vdo gauge set .The speedo instructions were a little confusing. They give 3 different methods of calibrations I used the MANUAL method and after 3 tries it worked. I became brain dead I guess. After it was done and working it was simple. What you have discribed so far is the way it supposed to work. Get out the instructions and reread them.
If this an old gauge w new problem you might check your HULL AFFECT SENSOR on Trans. This all works off elect. There is a three wire cable to gauge that plugs into speedo .Maybe this is loose. Do you still have instruction sheet? LOL caddy 53 chuck Centerburg Ohio
If this an old gauge w new problem you might check your HULL AFFECT SENSOR on Trans. This all works off elect. There is a three wire cable to gauge that plugs into speedo .Maybe this is loose. Do you still have instruction sheet? LOL caddy 53 chuck Centerburg Ohio
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