trans temp
Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,730
Likes: 2,658
From: SE Florida
Average is 60-100F above ambient temperature.
220F is the max for long term. For no more than 1/2 hour you can go to 250F with no damage. Don't go over 250F. These temps are in the pan or the test port, the line to the cooler will be MUCH hotter.
220F is the max for long term. For no more than 1/2 hour you can go to 250F with no damage. Don't go over 250F. These temps are in the pan or the test port, the line to the cooler will be MUCH hotter.
Hotshot
Joined: Jul 2008
Posts: 11,231
Likes: 130
From: Thomasville, GA
I have one and my temps are usually between 140-160.
Don't let it get up to 210 or higher, that's when bad stuff happens...
Thread Starter
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VT Chapter Ldr
Joined: Apr 2004
Posts: 96,133
Likes: 294
From: Orange, Vermont
I think I would like to put in a different trans cooler. I pulled our pop up camper back from Maine on Saturday, about a 4 plus hour trip, temps were close to 90F and the trans temp was 200 +/-F for most of it. I would rather have it in the 160-180 range.
What would be a good cooler to get and I should probably change the fluid, so what would be a good synthetic to use?
Thanks for any help.
What would be a good cooler to get and I should probably change the fluid, so what would be a good synthetic to use?
Thanks for any help.
Senior User
Joined: Dec 2007
Posts: 452
Likes: 0
From: Lizton, IN
I went with the True-Cool. Cant remember the model # right now, think it was 4367 or something like that. I second brown falcons advice.
My temps went down 30-40 degress when towing with the larger cooler. Haven't seem over 175 when towing yet. Cruising around empty it wont go over 150 and is usually just above 125.
The fliud i think is Mercon.
My temps went down 30-40 degress when towing with the larger cooler. Haven't seem over 175 when towing yet. Cruising around empty it wont go over 150 and is usually just above 125.
The fliud i think is Mercon.
Hotshot
Joined: Dec 2006
Posts: 14,069
Likes: 17
From: Melbourne, Ky
A larger cooler will help big time. I don't do any towing with my 02, so I still have a stock cooler. It runs at 150 when it's 90 out. I have amsoil synthetic in both trucks. Synthetic will lower temps a little. My 97 never gets above 180 when moving, even if it's 100 out. It does have a larger cooler from the factory. It's an F450 truck though. In town it will climb above 200-220, but drops back down when out on the highway. My 97 weighs in at over 13,000lbs too. As for synthetic tranny fluid, I don't think you'll go wrong using any of them as long as they are approved for the ford transmission.
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Hotshot
Joined: Jul 2008
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From: Thomasville, GA
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More Turbo
Joined: Oct 2003
Posts: 553
Likes: 6
From: North Western New Jersey
i might be in trouble....
i'm really hoping my gauge is wrong becuase driving on the highway this weekend with an 'empty load' (not towing anything), the tranny temp was hitting well above 200... It looks as if I have two tranny coolers. A stock and an aftermarket. Maybe its time for a new one??? Could it be cloogged? Why would the temps be so high unless the gauge isn't working...
how much damage could I Have done?
its been like this almost since I got the truck and that was 2 years ago.
how much damage could I Have done?
its been like this almost since I got the truck and that was 2 years ago.
Hotshot
Joined: Dec 2006
Posts: 14,069
Likes: 17
From: Melbourne, Ky
Like I said, with my 97 going through town, and driving the back roads, it will climb over 200 pretty easy. It has a whole lot to do with not near as much air moving through the cooler at the slow speeds, and the constant shifting it does with all the weight I carry. I always disengage the overdrive when I'm driving below 40mph. I have 130,000 miles on it since it was rebuilt. I was told I'd be lucky to get 100,000 on it. My truck was the first one these guys had rebuilt where they went with amsoil synthetic. Not saying it is the reason it has lasted this long, but it has lasted longer than what the mechanics said it would last.
Hotshot
Joined: Dec 2006
Posts: 14,069
Likes: 17
From: Melbourne, Ky
i'm really hoping my gauge is wrong becuase driving on the highway this weekend with an 'empty load' (not towing anything), the tranny temp was hitting well above 200... It looks as if I have two tranny coolers. A stock and an aftermarket. Maybe its time for a new one??? Could it be cloogged? Why would the temps be so high unless the gauge isn't working...
how much damage could I Have done? its been like this almost since I got the truck and that was 2 years ago.
how much damage could I Have done?
its been like this almost since I got the truck and that was 2 years ago.If it's been doing that for 2 years, and if the gauge is correct, you would have destroyed the transmission long before now I would think.
Senior User
Joined: Dec 2007
Posts: 452
Likes: 0
From: Lizton, IN
i'm really hoping my gauge is wrong becuase driving on the highway this weekend with an 'empty load' (not towing anything), the tranny temp was hitting well above 200... It looks as if I have two tranny coolers. A stock and an aftermarket. Maybe its time for a new one??? Could it be cloogged? Why would the temps be so high unless the gauge isn't working...
how much damage could I Have done? its been like this almost since I got the truck and that was 2 years ago.
how much damage could I Have done?
its been like this almost since I got the truck and that was 2 years ago.You may have a clogged cooler like your thinking. I would pull both of them and take a look. More than likely it's the stock one with the problem. Also a good idea to change tranny fluid and filter if you haven't done it for a while.
Hotshot
Joined: Jul 2008
Posts: 11,231
Likes: 130
From: Thomasville, GA
i'm really hoping my gauge is wrong becuase driving on the highway this weekend with an 'empty load' (not towing anything), the tranny temp was hitting well above 200... It looks as if I have two tranny coolers. A stock and an aftermarket. Maybe its time for a new one??? Could it be cloogged? Why would the temps be so high unless the gauge isn't working...
how much damage could I Have done? its been like this almost since I got the truck and that was 2 years ago.
how much damage could I Have done?
its been like this almost since I got the truck and that was 2 years ago.