200 tdi Temp Sender Issue - Defender Source
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  #1  
Old January 13th, 2010, 05:52 PM
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200 tdi Temp Sender Issue

So I bought the recommended VDO temp sender for my Disco 200tdi - VDO part number 323-095. It turns out to be way too small.

Mine looks to be roughly 15mm in diameter.

VDO only sells two senders that are close: M16 or M14 x 1.5

http://www.egauges.com/vdo_send.asp?...=250F_120C_VDO

Anyone know if it's the M16 or M14? Maybe even 5/8?
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  #2  
Old January 13th, 2010, 06:16 PM
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Quote:
Originally Posted by Wolf Fabrication View Post
So I bought the recommended VDO temp sender for my Disco 200tdi - VDO part number 323-095. It turns out to be way too small.

Mine looks to be roughly 15mm in diameter.
So you bought 1/8" NPT.

Sure it is not 1/4" NPT? 13.6 mm OD, 18 TPI.

200TDI Defender is definitely 5/8" UNF as I have one. Not sure if Disco 200TDI is different.

------ Follow up post added January 13th, 2010 04:26 PM ------

This http://www.expeditionlandrover.info/...conversion.htm says M16x1?? Same as the wheel bolts or is that M16x1.5?
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  #3  
Old January 13th, 2010, 06:34 PM
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Definitely not 1/4" NPT - here is is next to my 1/4" NPT tap. My sender is bigger.

Threads look to be between 24 and 27 TPI - but neither of those two work on my thread gauge.

So you 5/8" UNF - is that the same thread as NF3?
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  #4  
Old January 13th, 2010, 07:30 PM
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try this

http://mdmetric.com/thddata.htm
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Old January 13th, 2010, 07:52 PM
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I'd say it is M16x1 then (25.4 tpi).

NF-3 = UNF
http://www.using-tools.com/nuts-bolts.htm
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Old January 13th, 2010, 08:48 PM
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I've measured the threads and diameters and nothing is matching up, but the M16x1 is the closest.

Here's a pic of my t-stat housing. Does it match yours?
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Old January 13th, 2010, 09:36 PM
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Oh, and VDO doesn't have a M16x1 sender, so this is where my confusion lies.
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Old January 13th, 2010, 09:53 PM
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you might need an adapter. that looks like a radiator plug would fit

Quote:
Originally Posted by Wolf Fabrication View Post
Oh, and VDO doesn't have a M16x1 sender, so this is where my confusion lies.
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Old January 13th, 2010, 10:36 PM
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Radiator plugs are 1/2" BSP. Completely different.

My suggestion is to drill the guts out of the old sender and drill and tap for 1/8" or 1/4"NPT, then insert a sender. This is what most people do....

M16x1 won't exist as that is pretty rare.
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Old January 13th, 2010, 11:38 PM
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Quote:
Originally Posted by Wolf Fabrication View Post
neither of those two work on my thread gauge
If you're passing by Herndon this weekend, give me a call and we can use my (metric) thread gauge and a caliper so we can try to get a better measurement. Or if you get a chance to go there, I believe Home Depot (and Lowe's?) has a small bench with a bunch of holes/bolts you can use to test/compare threads.
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  #11  
Old January 14th, 2010, 06:11 AM
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Thanks for all the advice. I have calipers and thread guages, but I think this thing is cross threaded slightly. I will either cut up the old sender and re-tap, and drill a new hole in the t-stat housing and tap it. F'n Land Rovers.....
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  #12  
Old January 14th, 2010, 07:55 AM
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I Agree. It's less intrusive that drilling the housing. I did this to put in an aftermarket oil pressure sensor once and it worked well.
Quote:
Originally Posted by Red90 View Post
My suggestion is to drill the guts out of the old sender and drill and tap for 1/8" or 1/4"NPT, then insert a sender. This is what most people do....
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  #13  
Old January 14th, 2010, 12:03 PM
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Quote:
Originally Posted by Wolf Fabrication View Post
Thanks for all the advice. I have calipers and thread guages, but I think this thing is cross threaded slightly. I will either cut up the old sender and re-tap, and drill a new hole in the t-stat housing and tap it. F'n Land Rovers.....
Your Disco 200Tdi looks just like mine. I looked and looked for an adaptor, but never could get the right one. I ended up drilling and tapping my old Disco sensor to 1/8" NPT.
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  #14  
Old January 14th, 2010, 12:35 PM
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Quote:
Originally Posted by newfD90 View Post
I looked and looked for an adaptor, but never could get the right one.
Here is one. Not enough information to make sure it adapts the correct way.
http://www.partsforindustry.com/prod...ProdID=9153323
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