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Old 10-22-2012, 10:42 AM
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Transmission temp gauge sending unit

Hello everyone!

I would like to know where the best location to install a temperature sending unit for the transmission is and why?

If it matters the transmission I would be installing it into is a th400

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Old 10-22-2012, 12:28 PM
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Most aftermarket trans temp gauges I have seen put the sending unit on a tee fitting plumbed into the trans oil cooler line. This link shows the kit from B&M: B&M Automotive B&M Trans Temp Gauge Kit - Transmission Temp Gauge - Gauges & Mounting Kits - Interior Parts & Accessories - by 4 Wheel Parts
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Old 10-22-2012, 01:12 PM
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This is where mine is located and as far as I'm concerned, close enough for anything I'm doing with my car (trans. temp. runs within a couple degrees of the engine coolant temp (175-180 on a 90 degree day):

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Old 10-22-2012, 02:23 PM
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Originally Posted by Irelands child View Post
This is where mine is located and as far as I'm concerned, close enough for anything I'm doing with my car (trans. temp. runs within a couple degrees of the engine coolant temp (175-180 on a 90 degree day):


That bung that you installed to your pan for the sending unit, is it just sealed by compression with rubber gaskets?
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Old 10-22-2012, 03:46 PM
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Originally Posted by Rocketbird View Post
That bung that you installed to your pan for the sending unit, is it just sealed by compression with rubber gaskets?
It just takes a seal on the outside - you still need to have a ground - l drilled and tapped the cast pan. Got the sending unit from Egauges.
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Old 10-24-2012, 03:41 PM
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Nice clean install. Looks much cleaner and stout than trans line method.
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Old 10-24-2012, 05:09 PM
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Originally Posted by Irelands child View Post
It just takes a seal on the outside - you still need to have a ground - l drilled and tapped the cast pan. Got the sending unit from Egauges.
So the bung is not welded? where did you purchase it from?
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Old 10-24-2012, 06:50 PM
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So the bung is not welded? where did you purchase it from?
Got the sending unit from Egauges.com
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Old 10-24-2012, 07:30 PM
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Got the sending unit from Egauges.com
Ok I will search for one there. Not the sending unit itself but the bung that goes into the pan and see what I can find.
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