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Old 04-12-2011, 07:23 PM
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VDO Electronic Speedo not working.

I think this may me a electical issue.

Hi, after yrs of playing with muscle cars and classic cars, my wife and i decided to get a street rod. Its a 41 Chrysler Business Coupe with a 37 Chevy nose on it. It has Chevy running gear and electrics too, 350/350 10 bolt.

I have tried to contact the original owner to see what he used for the build but cant find him, the shop that built the car (2003) cant find the records either.

Anyway, it has a VDO Gauge set, it looks like they may have come all together, they are white faced retro looking gauges, Volts, Temp, Oil, Speedo, and Fuel.

The Speedo has a needle that goes to 120mph and has a LCD odometer. It does nothing, either when driving or turning the key etc.

Not sure how these work or where it gets its info from, can someone point me in the right place? I assume there is a control unit somewhere either on a axle or in the distributer that caculates something.

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Old 04-12-2011, 07:38 PM
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The unit gets signal from the speedo gear. There are two different types of speedo and of course two different senders.

I bought a complete set of VDO guages at a swap meet for dirt cheap one time. Then had to learn the different senders. Once figured out. A nice set.

Jegs had the speedo sender. VDO has specs and a download for instructions

VDO North America 188 Brooks Rd. PO box 2897 Winchester VA. 22603 540 665 2428..

I found the file.. Amazing!!! If you will PM me with your e-mail. I will send you a copy of the speedo information and charts.. Bob..

Last edited by BOBCRMAN@aol.com; 04-12-2011 at 07:50 PM.
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Old 04-13-2011, 06:00 AM
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Same info CHR gave you plus a couple more:




Irelands child
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