Trans Cooler
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Trans Cooler
I'm looking to install a larger cooler. A recommendation from a local trans shop here (they do my trans servicing) was to delete the radiator portion of the cooler line and route through the trans cooler only. Mech says that the motor coolant is much higher temp. than trans temp. should be, only allowing heating instead of cooling of the trans fluid. Any thoughts would be greatly appreciated, aloha.
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With you living in Hawaii I would agree. For those theat experience an actual winter, I think I would plumb the aux cooler after the stock cooler. That way one could use the heat of the colant to warm the tranny fluid.
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Your mechanic doesn't know what he's talking about. Ford does not install a trans fluid heater anywhere in the truck. There are two coolers, and one of them is in the radiator.
The cooler is in the cool side of the radiator. That's the side where the coolant has already given up it's heat. That side can be quite a bit cooler than the engine temp. Without the radiator cooler you need A LOT more aux cooling or you'll overheat the trans.
The cooler is in the cool side of the radiator. That's the side where the coolant has already given up it's heat. That side can be quite a bit cooler than the engine temp. Without the radiator cooler you need A LOT more aux cooling or you'll overheat the trans.
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Thanks for the replies guys. Yeah cookie thats what I was thinking. Our winters get to around 65 degrees (then we start putting on jacks!). I was gonna delete both radiator and stock trans coolers and install a RV cooler that's slightly bigger than Tru cools 3749. Thanks again and aloha.
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Originally Posted by willbd
Casey,
I think he wants to install a large cooler bypassing the on in the bottom of the radiator.
Bryan
I think he wants to install a large cooler bypassing the on in the bottom of the radiator.
Bryan
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From: Pasco, WA
My first attempt to run with only an aux cooler (26k GVW) resulted in a trans temp far north of 300 degrees on the first major hill I pulled, with a subsequent waste of $100 worth of synthetic fluid. I reconnected the radiator tank cooler. Now I've eliminated the tank cooler by adding a 2nd 26k aux cooler. Pulling 8k at 90 degrees ambient on the level gives me 140-150 degrees trans temp. Idling thru gridlock at 90 degrees gives me almost 200 degrees trans temp. The next mod will include a valve that allows me to route thru the tank cooler in the winter and a fan in front of one of the aux coolers for extra airflow needed when sitting in traffic or pulling long hills at low speeds.
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Thanks for all the replies guys! I got a 28k GVW cooler. This is what I'm gonna do: I will install to include tank, but remove stock trans. cooler. I will run it for a week or two then I'll re-route to eliminate tank and see what results are and post it. Not difficult to do and would be good information for all of us to have. I will keep you posted, aloha.
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OK update. Installed the 28k cooler in place of stock cooler, with tank still in-line. Unloaded:150-165 degrees depending on freeway or city traffic. Deleted tank 3 days ago, unloaded:140-155 degrees depending on freeway or city traffic. Ambient temp. 87-89 degrees. This is my daily driver, pulls a trailer maybe once a month. Thanks guys, aloha.
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