Trans Cooler Location?
Fleet Mechanic
Joined: Dec 2010
Posts: 1,546
Likes: 9
From: Wellington, Co
It is mounted low, between the intercooler and the radiator. You have to remove the panel on top of the radiator/grille, and then you can look down and see it. It is pretty small!
Tom.
01 F250 CC 4x4 7.3 204k.
Tom.
01 F250 CC 4x4 7.3 204k.
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New User
Joined: Feb 2012
Posts: 10
Likes: 0
I did the 6637 air intake install...then I was going to add a inline trans cooler to my stock one. Took the grill of and mounted my extra to cooler and was about to hook it up to my power steering cooler. I was like I dont think this right. I saw lines running into radiator but I thought the trans cooler was a sep cooler like I have seen in pics. I said screw it for the night. I'll go back under and look around some more next time. By the way this is a great site and have been reading it nonstop for the past two months since I got my truck
Lead Driver
Joined: Sep 2010
Posts: 7,793
Likes: 50
Its possible, and not sure what years are effected by it, and style of truck, but your trans cooler could be inside the radiator itself..OTW cooler. Mines set-up that way, and have received mixed opinions as to whats better. I've thought if something was to happen to the trans cooler part, that it'll taint the rad coolant, and we know how much that crap is. I've thought myself to go to a OTA coolant...(oil to air set-up).
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New User
Joined: Feb 2012
Posts: 10
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Its possible, and not sure what years are effected by it, and style of truck, but your trans cooler could be inside the radiator itself..OTW cooler. Mines set-up that way, and have received mixed opinions as to whats better. I've thought if something was to happen to the trans cooler part, that it'll taint the rad coolant, and we know how much that crap is. I've thought myself to go to a OTA coolant...(oil to air set-up).
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Fleet Mechanic
Joined: Dec 2010
Posts: 1,546
Likes: 9
From: Wellington, Co
Double check on the routing. Mine, and most I would guess, goes from the trans, to the cooler in the bottem of the radiator, then to the aux cooler in between the rad and intercooler, and back.
I just eliminated the small aux and used the aftermarket instead. I believe it was recommended to leave the radiator cooler in line, as the oil to water cooler works well??
Tom.
I just eliminated the small aux and used the aftermarket instead. I believe it was recommended to leave the radiator cooler in line, as the oil to water cooler works well??
Tom.
Post Fiend
Joined: May 2009
Posts: 5,470
Likes: 3
From: Pea Ridge, AR
Timmy I might be wrong, but I thought the 99's lacked the OTW cooler and only had the OTA?
The lines run first into the lower radiator then out of the radiator and around and up to the trans cooler, mounted just behind the power steering cooler, which is located towards the drivers side center, about 4"x12-16" IIRC. I find it interesting that OP's truck would not have the OTA cooler.
The lines run first into the lower radiator then out of the radiator and around and up to the trans cooler, mounted just behind the power steering cooler, which is located towards the drivers side center, about 4"x12-16" IIRC. I find it interesting that OP's truck would not have the OTA cooler.
Hotshot
Joined: Jan 2002
Posts: 17,988
Likes: 207
From: La La Land
Cliff's Notes short history:
The 99's came with an air-only cooler. Ford soon found that arrangement to be unsatisfactory.
Soon thereafter, they added (back in, the '97s still had them) the lower-tank-in-radiator cooler, but kept the air-to-oil cooler as well, in series. Some of the '99s were even retrofitted with those radiators.
We lived with this still-inadequate amount of cooling until someone figured-out that a V-10's cooler would fit. This added some more rows, and made the cooling almost marginal.
Then, Ford brought out the Six-Oh! with the 5R110. Finally, there was enough cooling to do the job when towing heavy. Fortunately, they mounted the air-to-oil in the same place, using basically the same mounting, and people figured out THAT was the one to use with a 4R100.
Pop
The 99's came with an air-only cooler. Ford soon found that arrangement to be unsatisfactory.
Soon thereafter, they added (back in, the '97s still had them) the lower-tank-in-radiator cooler, but kept the air-to-oil cooler as well, in series. Some of the '99s were even retrofitted with those radiators.
We lived with this still-inadequate amount of cooling until someone figured-out that a V-10's cooler would fit. This added some more rows, and made the cooling almost marginal.
Then, Ford brought out the Six-Oh! with the 5R110. Finally, there was enough cooling to do the job when towing heavy. Fortunately, they mounted the air-to-oil in the same place, using basically the same mounting, and people figured out THAT was the one to use with a 4R100.
Pop
Hotshot
Joined: Jan 2002
Posts: 17,988
Likes: 207
From: La La Land
Sure. A LOT of folks on here have simply added another (a third) cooler in series with the factory existing two. The Derale from Clay would be a good example. See:
Riffraff Diesel: Derale 20,500 GVW Transmission Oil Cooler
Pop
Riffraff Diesel: Derale 20,500 GVW Transmission Oil Cooler
Pop
Cargo Master
Joined: May 2010
Posts: 3,047
Likes: 9
From: Snohomish, WA
Yes, the manual transmissions use the OTW cooler. The transmission fluid flows from the transmission bottom fitting, to the intank transmission fluid cooler, and returns to the transmission top fitting.
