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  #1  
Old October 19th, 2005, 05:05 PM
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VDO SPeedo

I want to put a VDO Speedo in my 300 Tdi. I looked through the FAQ's on here and found a part number, but the post was really old. Wondering if anyone has purchased a VDO speedo lately, and if so where from, what size, part number, price? I'd appreciate any input. Thanks...
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  #2  
Old October 19th, 2005, 05:11 PM
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It needs to be a 4" speedo. Any VDO 4" should work. Many get the Vision series. Look around for pricing. I think last time I looked, Summit Racing was the cheapest online source, but look around for yourself.

The article is here

You'll need a sender from the newer Defnders part #AMR 1253, if your current one is mechanical.

Edit: Looking at the EPC it shows YBE100530 for the TDI. The above number is for a Discovery....probably the same part.
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  #3  
Old October 19th, 2005, 11:35 PM
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John,
thanks a LOT for your quick reply. The speedo has been ordered from Summit. It was $124.00 shipped. Thanks...
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  #4  
Old October 20th, 2005, 01:41 AM
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Be sure your speedo drive gear matches the new impulse sendor drive.

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  #5  
Old October 20th, 2005, 10:52 AM
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So Jim, does the bolt on transducer have the speedo gear on it then? In other words, it does not attach like the cable with a square drive from inside the gear.
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Old October 21st, 2005, 12:24 AM
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The speed sensor has a square drive that protrudes into the gear drive in the transfer case. But earlier gear drives in the transfer case had larger female square outputs. They will not send a signal through the smaller square drive of the later speed sensor. Possibly could find an adapter but I always find a gear that fits. The VDO speedo is programable so don't worry about teeth count and such.

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  #7  
Old October 21st, 2005, 08:47 AM
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Do a search. I just did the install on my 300tdi. www.egauge.com We also dicussed the wiring of the unit too..
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  #8  
Old October 21st, 2005, 10:04 PM
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I recently installed a VDO in my hybrid. I have no clue what model my LT230 was harvested from, but the female square drive was too large for the sender. After a little head scratching, I did a McGyver repair by cutting a piece out of a soda can and wrapping it around the male drive member.
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  #9  
Old April 18th, 2008, 12:25 PM
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Quote:
Originally Posted by pendy
The speed sensor has a square drive that protrudes into the gear drive in the transfer case. But earlier gear drives in the transfer case had larger female square outputs. They will not send a signal through the smaller square drive of the later speed sensor. Possibly could find an adapter but I always find a gear that fits. The VDO speedo is programable so don't worry about teeth count and such.

JP
So bringing this old thread back to life. Jim, do you know what sender part number has a larger male drive to fit the older boxes?

Follow-up Post:

So a bit of research so far...

The two pin Disco 1 sender is YBE100540, around $60 minimum.

The 3 pin TD5 Defender sender is YBE100530, around $35 minimum.

I assume these both have the small sqaure drive?
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  #10  
Old April 18th, 2008, 12:35 PM
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The Euro and diesel Defenders have the larger opening in the gear.
The NAS has the smaller.

Grab a speedo drive gear from anything factory EFI with an LT230, that will be the right one (smaller one).

FRC9339 if you want a new one (small).
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  #11  
Old April 18th, 2008, 12:38 PM
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No, I need the larger drive as I have an ex-MOD diesel Defender.

I'm just trying to figure out which senders have the large drive and which have the small.

edit: Sorry, I understand what you are getting at now......I do clue in eventually.....
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  #12  
Old April 20th, 2009, 05:36 PM
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The 3 pin TD5 Defender sender is YBE100530, around $35 minimum.

Will this transducer fit in a 95 s/w t-case?
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  #13  
Old April 20th, 2009, 05:52 PM
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I ended up putting a used Disco sender in my 1991 D90. The small male of the sender works fine with the larger speedo gear female. No mods needed. It has been in there for quite a while.
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  #14  
Old April 20th, 2009, 06:30 PM
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I want to put one in the 95 d-90. wonder if it will work. If not, I guess I would have to change the gear. How the hell do you pull the drive gear housing out of the case?

I used the 3 pin sender on my silver truck and it worked great with the VDO speedo..
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  #15  
Old April 13th, 2011, 10:54 AM
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Speedo Gear, Larger square at the T/C to a smaller sender.

Any other suggestions for solving this problem , short of swapping out the drive gear?

Quote:
Originally Posted by John_Karlsson View Post
I recently installed a VDO in my hybrid. I have no clue what model my LT230 was harvested from, but the female square drive was too large for the sender. After a little head scratching, I did a McGyver repair by cutting a piece out of a soda can and wrapping it around the male drive member.
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  #16  
Old April 13th, 2011, 06:37 PM
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Quote:
Originally Posted by tomaco1 View Post
Any other suggestions for solving this problem , short of swapping out the drive gear?
I had the samll speedo sender in the larger gear for years with no mods and it worked fine.
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  #17  
Old April 13th, 2011, 07:56 PM
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That's interesting. I had the clutch replaced, and they must have lost the shim that I made, because all I get is an occasional jump of the needle. I've been too busy to poke around in my collection of spares to try to figure out a cure, but I have visions of wrapping some fine wire around the shaft with a bit of epoxy to keep things in place.
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  #18  
Old May 1st, 2011, 07:24 PM
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I just installed the VDO hall effect sender and am getting ready to wire the Speedo.

It seems odd, but according to the wiring directions there doesn't seem to be a constant 12v to the gauge itself?

I was wondering what keeps the odometer memory?
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  #19  
Old May 1st, 2011, 07:39 PM
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You don't need power to keep memory in electronics.... It would sure suck if an odo was designed that way as every time you disconnected the battery, your mileage would reset.
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  #20  
Old May 1st, 2011, 07:59 PM
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Thanks, I was reading the "wibble wobbly thread" and got a bit confused. They seemed to think the Speedo with the LCD needed constant 12v to charge the battery in there.
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