Carolina Horsepower - View Single Post

MonteC · 03-22-2010, 10:30 PM

Just my opinion, take it for what its worth. I like to install trans fluid temp sensors in the cooler supply line. My reasoning is that this spot will have the hottest the fluid will get. Unless the transmission is having an internal meltdown usually caused by a plugged cooler. Placing the sensor in the cooler lines with give you an exact and "at the moment" reading, and if you study the temperature trend you will be able to know where your transmission is supposed to run and what is normal and what is abnormal.
But if the fluid in the pan is getting super heated by the lack of lube in the gear set, then the transmission should already be showing obvious signs of failure, and by the time the gauge is high enough to warrant a shut down the damage is already done.

The other place i also like is the cooler return line. Your cooler will only cool a certain amount of degrees. For example your transmission runs 230 before the cooler and 180 after thats 50 degrees. So if your before cooler temp climbs to 270 then your after cooler temp will be around 220. If you have been studying the temperature trends then you would know that something is wrong. You will also know how hot the fluid is when it enters the lube circuit. Yes the fluid will heat up one in the lube circuit, part of its job is to absorb the heat from the moving parts. But if everything is working correctly it wont heat up nearly as high as the post converter temps. And like i said before if you have a pan temp sensor, the damage to the unit will already be done before the gauge is high enough to really warn you. I would like to know if the temp is abnormal BEFORE it goes into the lube circuit so i can take the appropriate actions before critical damage is done.

If you're really feeling froggy, install two gauges. One on the supply and one on the return so you can see how well your cooler is working, and if the cooler is adequate for your application.

Gerald you know i value your opinion very highly, im not attacking or arguing with your post. I am just posting my thoughts on the subject. If you see any flaws in my logic please point them out, i will forever be a student in this field.

03-22-2010, 10:30 PM	#22
MonteC Senior Member Join Date: Oct 2009 Location: Summerville Posts: 4,431	Just my opinion, take it for what its worth. I like to install trans fluid temp sensors in the cooler supply line. My reasoning is that this spot will have the hottest the fluid will get. Unless the transmission is having an internal meltdown usually caused by a plugged cooler. Placing the sensor in the cooler lines with give you an exact and "at the moment" reading, and if you study the temperature trend you will be able to know where your transmission is supposed to run and what is normal and what is abnormal. But if the fluid in the pan is getting super heated by the lack of lube in the gear set, then the transmission should already be showing obvious signs of failure, and by the time the gauge is high enough to warrant a shut down the damage is already done. The other place i also like is the cooler return line. Your cooler will only cool a certain amount of degrees. For example your transmission runs 230 before the cooler and 180 after thats 50 degrees. So if your before cooler temp climbs to 270 then your after cooler temp will be around 220. If you have been studying the temperature trends then you would know that something is wrong. You will also know how hot the fluid is when it enters the lube circuit. Yes the fluid will heat up one in the lube circuit, part of its job is to absorb the heat from the moving parts. But if everything is working correctly it wont heat up nearly as high as the post converter temps. And like i said before if you have a pan temp sensor, the damage to the unit will already be done before the gauge is high enough to really warn you. I would like to know if the temp is abnormal BEFORE it goes into the lube circuit so i can take the appropriate actions before critical damage is done. If you're really feeling froggy, install two gauges. One on the supply and one on the return so you can see how well your cooler is working, and if the cooler is adequate for your application. Gerald you know i value your opinion very highly, im not attacking or arguing with your post. I am just posting my thoughts on the subject. If you see any flaws in my logic please point them out, i will forever be a student in this field.