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Auto trans operating temps?

General Tech Talk

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Vulcanised
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Auto trans operating temps?

Post by Vulcanised »

Anybody got any idea of what temp an auto trans will generally work at? I know the radiator cools it, but would a 40-240 C gauge be sufficient to monitor the trans temp? particularly off-road.
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Post by jeep97tj »

That would be pleanty any thing over 100deg is no good for the tranny.
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Vulcanised
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Post by Vulcanised »

jeep97tj wrote:That would be pleanty any thing over 100deg is no good for the tranny.
thats good! i got a spare mechanical temp guage that i was going to use for boost temp on the Rodeo... brand new. Might put it to use
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Post by toyrex »

Operating temperature of a T700 is 85 to 90 degree C 100+ is to hot
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Post by awill4x4 »

After deleting the oil coolers in the radiator entirely and using 2 front mount oil coolers my normal running temps are 45-50 degrees C. A good guide to seeing if your auto has enough temp to run properly is that the torque convertor won't lock up until the auto temps are right. Before going to front mount coolers only my torque convertor would lock up about 8 kms from home. Now it takes about 1-2 kms longer to reach operating temp, I can live with that quite happily.
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Post by Vulcanised »

i drive for 5 kilometres on the highway before i lock my torque converter up (it's hooked up manually) I currently run a cooler bewteen the radiator and the gearbox on the return line. There is a large aftermarket one coming with the trans i got for it on eBay to replace the broken one that is currently in the Patrol :oops:
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