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Old 07-01-2010, 09:12 PM
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Transmission temp gauge sensor in cooler line?

I am looking for a trans temp gauge that I can splice into my rubber cooler lines. Does anyone know of one off hand that comes with the t-fitting to do this? Or maybe one that I can buy fittings to do this with? I have a drain plug on my turbo350 but not sure if the sensor has the right thread pattern for the drain plug. I don't want to have to remove the pan to drill a hole.

THANKS!

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Last edited by kyle86; 07-01-2010 at 09:40 PM.
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Old 07-01-2010, 09:48 PM
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Quote:
Originally Posted by kyle86
I am looking for a trans temp gauge that I can splice into my rubber cooler lines. Does anyone know of one off hand that comes with the t-fitting to do this? Or maybe one that I can buy fittings to do this with? I have a drain plug on my turbo350 but not sure if the sensor has the right thread pattern for the drain plug. I don't want to have to remove the pan to drill a hole.

THANKS!
What type and size are the threads on your sender?

You really want to use the fluid in the pan, but I suppose you could rig up something to work in the port of the tranny to the cooler- that's the bottom fitting on the tranny case.

The fitting threads are male, either 1/4-18 NPS ("S" for "straight", tighten to 25 ft/lb) OR 1/4-18 NPT ("T" for "tapered", tighten to 15 ft/lb). If the fitting uses a washer and tightens flush to the case, it's a NPS.

The fittings are inverted flare on the other end, so you'll need to work w/that, or a different fitting for use w/AN fittings/lines are available.
:


Russel, Earls and others will all have various fittings to use, just keep the sender as near to the tranny as possible. But putting it in the pan will be the best way and cheaper to boot- those fittings and all don't come cheap.

Last edited by cobalt327; 07-02-2010 at 11:17 PM. Reason: Removed the word "return", to provide a clearer description.
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Old 07-02-2010, 02:46 PM
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Thanks cobalt, I'll definately see what I can come up with. Thanks!
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Old 07-02-2010, 10:25 PM
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a temp gauge in the cooler lines is not typically a good idea..

the "out" fitting of the t-350 ( bottom) is direct out of the converter where most of the heat is generated. Temp reading there can be high

The return line to the trans (top fitting) from the cooler has not cooled - lubed any of the internal parts of the trans
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Old 07-02-2010, 11:51 PM
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I'd weld a bung into the pan, about an inch under the pan rail. Or one of the drain plug kits and put loctite or 518 on the threads of bolt and nut, and use the 1/4" pipe threads for the sender.

Cooler lines would be cool. If one was really into knowing what all the different heat meant. But even a temp sender just creates one more possible place to leak and anxiety for the driver, lol...
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Old 07-10-2010, 11:56 PM
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The pan already has a drain plug on the side of it. What are the possibilities that I will be able to put the sender in it? I have no idea what size it is without draining the transmission. Maybe some fittings and adapters could make it work.

I really just don't want to have to pull the pan off again. I've had leaking issues and have already pulled it twice. The last time I permatexed the gasket good and it finally stopped leaking so I don't want to remove it.
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