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Old 12-19-2011, 08:17 AM
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Idiot light for trans temp.

Anybody using an idiot light to signal when the trans fluid is getting 200 degres? I'm using a 700r4 and I'm told that overheating can happen and destroy the trans. I do not have a spot for a tranny temp guage but I could add an idiot light. What sender should I use and where to install the sender? Thanks :

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Old 12-23-2011, 05:10 PM
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transmission temp.

Best place for the sensor is a bung in the pan,thats where the fluid is the hottest,not in the cooler lines. If you are going to the trouble of installing,make room for a guage. They used to call them dummy lights,now idiot light because 99% of the time when they came on TOO LATE Dummy its wasted. If you can't put a bung in the pan you can buy 700r pans with them in allready. No need to even spend the money if in the end you are relying on a idiot light.
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Old 12-23-2011, 06:49 PM
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Trans temp idiot lite

My 4Runner came with that very "feature" - an idiot lite that serves dual purposes - it comes on if either engine oil temp or trans fluid gets too hot. Of course, the definition of "too hot" is what the Toy engineers decided and having just a light means you cannot monitor how close things are getting to being "too hot".

I'd prefer to have both a light AND a gauge, so I can monitor things on an on-going basis and then have a light in case things go suddenly very wrong when I am not looking at the gauge, but that'd mean some real problems in hooking things up
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Old 12-24-2011, 11:11 PM
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A Gauge with Warning Light would be best.
The Temp in the Pan is more of an average temp. the hottest fluid comes out of the TC/Torque Converter then goes to the Feed/Out Line to Cooler in the Rad. Return/In Line, cooled Fluid, goes to the Trans Lube circuit.
Many Circle Track etc.. gauge panels come with Gauge & Light.
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Old 12-25-2011, 08:13 PM
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Does anybody know on a 700r4 which line nto put the temp probe in? The upper or lower on the transmission case. Thanks
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Old 12-27-2011, 03:49 AM
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Quote:
Originally Posted by wibas
Does anybody know on a 700r4 which line nto put the temp probe in? The upper or lower on the transmission case. Thanks
Trans Fittings:
Line Out/Feed to Cooler = Bottom.
Line In/Return from Cooler = Top.

Radiator Cooler Fittings:
Line Out/Return to Trans = Top.
Line IN/Feed from Trans = Bottom.

Auxillary Cooler Fittings:
Line Out/Return to Trans = Top.
Line IN/Feed from Rad = Bottom.


Depends on if you want to know Temp before cooling or Temp after it leaves the Cooler/Coolers.
I'd keep an eye on Temp returning to Trans from Cooler = Top @Trans..
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