Hot transmission!
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5th Wheeling
Joined: May 2021
Posts: 29
Likes: 4
Hot transmission!
I’ve got a 14’ f250 deleted and tuned. The transmission is running hotter than usual (205-216) when it usually hangs out around 194 and I can’t figure out why. It started this a month or two ago so I changed trans fluid and filter, changed and flushed the secondary coolant at the same time. It worked good after that for 1000 miles or so. Saturday I towed a 7k lb boat for 300 miles with no issue, temp never topped 200. On the way back towing nothing at all it stayed around 207. I checked the level of coolant and it’s low. I put 9 1/2 qts of coolant in when I changed it. I’m thinking a leak maybe? This isn’t the first time of topped the coolant off. I checked around the turbo and it’s dry. I don’t have an egr and it’s no leaks around the coolant reservoir that I see. Also the only thing I’ve changed in the past 2 months is, I went up to a 37in tire from a 35. Gears are still stock.
Y’all have any ideas? I’ve heard these trucks have a common coolant leak but I can’t find one.
Y’all have any ideas? I’ve heard these trucks have a common coolant leak but I can’t find one.
Thread Starter
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5th Wheeling
Joined: May 2021
Posts: 29
Likes: 4
Yeah, no codes are showing. It runs fine and shifts fine I can’t figure out why it would be running hotter than usual though. I called a few trans shops and they are think it’s a coolant or circulation problem. I hate to to take it in if it’s something simple I can do myself.
Fleet Mechanic
Joined: May 2018
Posts: 1,765
Likes: 502
Did the higher temps coincide with the larger tires or did you do the transmission service at the same time as the larger tires? Trying to figure out if you have any data with just the larger tires or just post-transmission service to try to narrow down the culprit. Also, are you losing coolant or just topping off post-service?
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5th Wheeling
Joined: May 2021
Posts: 29
Likes: 4
Did the higher temps coincide with the larger tires or did you do the transmission service at the same time as the larger tires? Trying to figure out if you have any data with just the larger tires or just post-transmission service to try to narrow down the culprit. Also, are you losing coolant or just topping off post-service?
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5th Wheeling
Joined: May 2021
Posts: 29
Likes: 4
I’m using the analog gauge on the dash and the digital gauge that’s on the dash screen. The Ford dealership told me I was okay up to 230 but after that I needed to let it cool. It’s never gotten to that temp. I had to top my coolant off again today.
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Hotshot
Joined: Oct 2006
Posts: 10,188
Likes: 8,071
From: Texas
you need to figure out where your coolant is going, fix that, then see where you are. Trans is cooled by a heat exchanger with cooling system.
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Thread Starter
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5th Wheeling
Joined: May 2021
Posts: 29
Likes: 4
I’ve got a 14’ f250 deleted and tuned. The transmission is running hotter than usual (205-216) when it usually hangs out around 194 and I can’t figure out why. It started this a month or two ago so I changed trans fluid and filter, changed and flushed the secondary coolant at the same time. It worked good after that for 1000 miles or so. Saturday I towed a 7k lb boat for 300 miles with no issue, temp never topped 200. On the way back towing nothing at all it stayed around 207. I checked the level of coolant and it’s low. I put 9 1/2 qts of coolant in when I changed it. I’m thinking a leak maybe? This isn’t the first time of topped the coolant off. I checked around the turbo and it’s dry. I don’t have an egr and it’s no leaks around the coolant reservoir that I see. Also the only thing I’ve changed in the past 2 months is, I went up to a 37in tire from a 35. Gears are still stock.
Y’all have any ideas? I’ve heard these trucks have a common coolant leak but I can’t find one.
Y’all have any ideas? I’ve heard these trucks have a common coolant leak but I can’t find one.
FTE Legend
Joined: Mar 2017
Posts: 31,976
Likes: 9,200
From: Western NY
AFE makes a nice welded aluminum intercooler as well as Mishimoto also. I'll have to look at Stage 3 Motorsports and see which one they are selling. There's another aftermarket intercooler made by someone. I'll see if I can find it.
How many miles on your truck?
How many miles on your truck?
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5th Wheeling
Joined: May 2021
Posts: 29
Likes: 4
114k miles! I actually just looked at the stage 3 and it’s an afe intercooler blade runner gt. Stage 3 gives a discount to first responders so I’ll get about $100 off of it. Priced right around $990 then.
FTE Legend
Joined: Mar 2017
Posts: 31,976
Likes: 9,200
From: Western NY
Okay I see Stage 3 sells the AFE.
https://www.stage3motorsports.com/46...tercooler.html
here's the Mishimoto intercooler.
https://www.mishimoto.com/ford-power...tercooler.html
https://www.stage3motorsports.com/46...tercooler.html
here's the Mishimoto intercooler.
https://www.mishimoto.com/ford-power...tercooler.html
Thread Starter
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5th Wheeling
Joined: May 2021
Posts: 29
Likes: 4
Okay I see Stage 3 sells the AFE.
https://www.stage3motorsports.com/46...tercooler.html
here's the Mishimoto intercooler.
https://www.mishimoto.com/ford-power...tercooler.html
https://www.stage3motorsports.com/46...tercooler.html
here's the Mishimoto intercooler.
https://www.mishimoto.com/ford-power...tercooler.html
FTE Legend
Joined: Mar 2017
Posts: 31,976
Likes: 9,200
From: Western NY
Yeah... Let us know.
Thread Starter
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5th Wheeling
Joined: May 2021
Posts: 29
Likes: 4
I went with a mishimoto intercooler instead of the stage 3. This fixed my cooling issue with the trans. My old intercooler was full of coolant in areas there should not have been any when I removed it. I’ve put about 1500 miles on it and no complaints so far. It performs well, I build boost quicker than before and have had about 1mpg gain. I’m still waiting on the spe piping kit so we’ll see how that does. Thanks for all the input!