Just curious what your tranny temp runs when towing in the hills during the hot summer months. I have an automatic, see below, and didn't see the temp ever go over 165 degrees. Is this normal, I expected to see it get a lot hotter.

Thanks

 

Let me guess.

Your temp sensor is in the Tranny Pan, right?

I get higher temps than that unloaded in the summertime.
Mine is in the hot line between the trans and the heat exchanger.
I can hit ~200* in traffic without a trailer.

 

I think the pan will read about 30 degrees lower than the hot line because you are measuring the fluid after it goes through the cooler. Mine is in the pan too for ease of installation but I am aware of the real temps. My trans, by the way, sometimes runs cooler when I'm towing. Figure that one out!!!!

 

That 30 degree figure will probably be a lot greater in instances where the trans is building heat rapidly. You would be amazed at how fast the temp builds when using reverse and doing a lot of backing up. Depending on how well the torque converter stays locked up, you will see rapid heat rise when unlocked,especially when towing. My stock trans would sometimes stay unlocked in third when towing in the mountains and the heat build up was tremendous. I learned on my first tow across Black Mountain on I-40 that I had no choice but to get off the throttle in order for the TC to lock up and keep the heat down. This problem has been eliminated since installing the Goerend Bros. TC and VB. The new valve body keeps the TC unlocked for a couple of seconds before going into lock up. I saw temps at 250* and still climbing with the stock trans on that first tow when stock! I figured out what I had to do and that meant "NOT peddle to the metal" when unlocked.
With the mods I have now, towing is a dream and NO heat issues at all. Temp stays right around 160-165* when TC is locked and towing a 10k 5er. I would really recommend installing the temp probe into the HOT line of the trans. This will show you the temp of the fluid at its hottest point and I guarantee you will be shocked at the difference. It cost me about $10.00 for the "T" and compression fittings from NAPA to install mine in the HOT line and you can see pictures in my gallery. It has been this way for over 5 years and 90,000 miles with no problems.
Just my $.02

 

Notice you have the X-Monitor, I also have the X. my highest temp reading was 160*F last August 2004 pulling a 28ft TT in 97*F temp.

The X-Monitor taps the wire on the factory trans warning sensor. I have always questioned mine being low not actual true reading so have just learned to add 20*F or 30*F to my readings showing on the X.

According to my owners manual after vehicle has run at least 15 miles fluid should be normal "hot" roughtly 180*F. This found in section of manual for checking trans fluid level.

There has been some debate about sensor locations on other forums I've read. I for one would like real time reading at any given point.

Tony

 

Thanks for the input. I have always questioned this. Guess I will add 20 to 30 degrees to this as Tony says until I come up with something else.

Doug

 

Just had the x-monitor installed and also wonder how many degrees to add to the display since it comes off the factory warning sensor....Does everyone feel 30* is enough to add? If so, I'll go into the menu and drop the warning by 30*

Can the x-monitor use a sensor in the hot line or does it have to use the trans tap point?

Jay

 

That's funny. It takes longer than that if the torque convertor is locked up. Empty or loaded. Does depend on the ambient temp, though, too.

I have my sender in the hot-line, and don't normally see the temp over 160-180* towing in the summer, unless the T/C is unlocked. Unlocked, it can go up pretty quick.

 

My temps hover around 150 F. - 155 F. in the summer while towing my 36' 5er (15k lbs+), I do however have an additional ambient cooler that I added in series with the stock cooler up front.

My temp probe is in the pan (Mag-deep), not only because it was already tapped for it but because that is where ATS suggested was the best place for it.
I asked them straight up where the best place to measure tranny temps from was and they told me the pan. It's nice to know what's coming out of the torque converter, but that's not the temp of the fluid that the drive clutches are bathing in.

 

Hottest I've seen is 230* with the camper on the truck and Jeep on the trailer (~14k pounds total), climbing a 7-8% uphill grade about seven miles long...which I had to pull from a standing stop at the bottom. Ambient temps were in the 80-90* range. This is with the sender in the output line of the transmission - the hottest the fluid will get - and no lockup converter. I have a large fan-mounted cooler under the bed in addition to the factory stacked plate one behind the grille and the heat exchanger.

 

My tranny temp was running 150 while towing our 5000# Travel trailer this past weekend. Did hit 180 when I backed it into the camping spot, cooled off right away.

 

when pulling my 40ft 14,000 lbs horse trailer my tranny gets up to 180 degrees

 

Would like to hear the temps from those with the sensor coming out of the factory warning sensor port as opposed to hot line or pan.

 

Hey guys I'm kinda new with this stuff and am thinkin about buyin a 27 foot 5th wheel camper... and I've got an 01 CTD 2500 4x4 6 speed.. does a guy really need a tranny cooler on a manual tranny.. thanks

 

Ok, I have my temp. sensor in the hot line. It is "T'd" in the hot line. Ive had my gauges in for months, and I havent towed anything really yet with them, but it always stayed around 125 or cooler all the time after warming. Today I ran it just normal around town to eat, then back out to the house. I looked at the gauge and it was around 170 degrees. Is that normal? Was my sending unit not working before, and just started? I need to know something quick. My fluid isnt burnt or anything.... Please help....