Hi everybody. I installed a Temperature Gauge to my transmission and the temp. reads 105 deg. when it is 40 deg. outside. My question is what is an average temp. without a load ? It is on a 1998 F-250 LD 5.4 E4OD And a trans. cooler.
I purchased a Digital Camera and soon there will be photographs.

 

My 5.4 SCab with the 4R70W runs around 70*f over ambient for an apples to oranges compare.

 

Thank you for the reply. My water temp. is 180-190 deg. and the Volts are 15 but my transmission temp. read 110 deg. and the gauge starts at 100 I thought I did something to the sender. What a relief!

 

I also just installed a transmission temperature gauge. My gauge reads about 110 degrees with an ambient temperature of about 40 degrees. But I've seen a huge difference in temperature when I drive in stop and go traffic. Driving around town with stop signs and minor hills, my tranny temperature got to almost 200 degrees. I'm planning to tow a 18' trailer. I wonder what the temperature will be when I am towing. I may install a larger transmission pan. Any thoughts?

 

The reason I installed the gauge is to see what the temp. is when I pull my trailer ,it is a 33 Ft. Soon I will install a shift kit. This will tell me if the kit is an improvement in temp. change. The information that I read tells me that it improves the shifting but there is no information on temp. change. Do you think the cost for the pan will be worth it ? Is there any information out there on tranmission pans? If there are any facts that show it is worth the cost then I will install one when I put the shift kit in.

 

I'm not sure what type of aftermarket transmission pan I should get. There are several different types available. There are some pans that are huge. But I really don't want a huge pan hanging down from my truck. I would probably rip the pan off the truck when I go off-road. I was thinking about installing a slightly larger than stock transmission pan that will allow me to hold more transmission fluid. But I'm not sure how much of a difference that will make in overall transmission temperature. I'm also curious to know how a shift kit will effect transmission temperature.

 

IMO increasing the volume of the tranny will just give you a larger quanity of hot fluid. I would go with a larger cooler with a fan if I was worried about the temp ot the tranny. I put the largest cooler I could find on mine, stays at about 100 degrees, when I pull a trailer over the pass in the middle of the summer it got up to 250 degrees, so I'm adding a fan that I will controll manually with a switch. Don't expect it to go over 200 degrees.

 

Thanks for the advice. I tend to agree with you. How hard was it to install the larger cooler? Do you have the factory auxiliary trans cooler installed as well?

 

I had a local Rad shop install my larger cooler as there was some heavy-duty bracing that needed to be be done at the top to handle the bigger size. I went from a factory tow package cooler (11,500 lbs GCWR capacity) to a 20,000 lb'er.

Is 70 degrees F over the outside temp a standard yardstick for the tranny temp? I put an electric temp guage in this afternoon (outside temp here in Canada was minus 15 degrees celcius) and my guage didn't move from the low end. The sensor is in the side of the pan. I'm heading down to New Orleans next week and was wondering what I should expect to see as a tranny temp. I have a small fifth wheel (5000 lbs fully loaded) pullled by a 97 F150 4.6L, 3.55 rear end - GCWR 11,500 lbs and I'm about 500 lbs under this. I realize mountains add an extra dimension but I was wondering what to expect on an moderate terrain going about 55-60 MPH.

John