Transmission Cooler HELP

[mike.germann]

Thanks for the explanation. That definitely sounds like it could be the problem, based on current symptoms. I'll have the trans mechanic look into it when I take it in tomorrow.

I think I might drive it for a while and show the mechanic how hot the temp gauge has been getting. The original trans rebuilder took it out when I told him of my suspiciouns, but the trans doesn't get real hot just in town. Correct me if I'm wrong, but I wouldn't think there would be any harm in bringing it into the shop after a cruise, so they could actually see the gauge above 230.

Otherwise, I'm afraid they're just gunna tell me nothing's wrong. Or worse, give me BS info.

 

[NevrKnow]

Don't remove it. Cooler plugs and bye bye tranny in a few seconds. $38 part.

Second. Check and make sure it's not your gauge. Only speaking from recent experience here.

Also read this. http://www.dieselsite.com/index.asp?PageAction=VIEWPROD&ProdID=172

 

[uloadit]

it is only used for when the out side air temp is under 30 .the valve opens to let the transmission oil warm up faster ,that's all it does,it will not help a back up system.once temp is up it stays closed so if you have a cloged system that valve wont help you at all.change it out , i dont use them and i rebuild transmissions and never put them back in.if you where in wether below O all the time i keep it tr

 

[mike.germann]

I'm confused now, is this valve important or not? I need facts, more than personal preferences. Seems to be arguable..

Anyone else have input?

 

[uloadit]

it is only used for when the out side air temp is under 30 .the valve opens to let the transmission oil warm up faster ,that's all it does, it will not help a back up system. Once temp is up it stays closed so if you have a clogged system that valve wont help you at all. If your system is clogging up you know it by the high temp , I don’t use them because that will fail way before a cooler and I rebuild transmissions and never put them back in. if you where in weather below O all the time I keep it

 

[uloadit]

just chang it out for a new one

 

[uloadit]

Other Transmission Components - Transmissions products - D&W Performance there two front and back BDD1600034 BDD1600035

 

[Tail_Gunner]

One possible point I have not seen mentioned yet is the possiblity of improper installation of the trans cooler.

How the cooler is mounted can affect its efficiency due to how effectively it fills with fluid.

If the inlet & outlet are on the bottom, its possible to get an air bubble in the cooler. Fluid will flow in & out, but the majority of the interior volume will be filled with air, not trans fluid.

If the fittings are on the side, its best if the fitting with fluid going into the cooler is on the bottom. That way all the air will be purged out of the cooler by the time fluid finally starts coming out the other fitting.

By far the best way of mounting is with the fitting on the top. That ensures all the air is purged out of the cooler with the cooler filling to its max capacity.

I have two coolers in series. I ditched the OEM cooler and installed the larger cooler for a V8/V10 truck. I added an additional cooler that measures about 12" square.

Between the two, I've never seen tranny temps higher than about 190* when towing on a hot day in stop & go traffic. When not towing on a hot day, the gauge barely registers at 125*.

 

[mike.germann]

I'll have to check out my cooler to see how it's set up.

Also, after the transmission originally died, pieces of metal were everywhere. I was told that the cooler SHOULD have been replaced, but it was only flushed.

It's a possibility that it could be clogged, I suppose.

I went to Ford, and the 6.0 cooler cost $470. The representative also told me that the 6.0 cooler wouldn't install in the 7.3...which is obviously BS, since so many of y'all have it installed. I told him "I hear people swap to the 6.0 cooler because it's larger and more efficient," and his response was this: "they're wrong. That cooler won't bolt up to the 7.3."

So I walked out, 'nuff said. That's why I don't go to the dealer for help.

Needless to say, I bought an aftermarket cooler at Advanced Auto, for $49.99. Haven't installed yet. It's rated for vehicles towing more than 10,000 pounds.

I don't do much towing, but I figured if I'm going to buy a cooler, I want all the cooler I can get.

 

[Tail_Gunner]

The representative also told me that the 6.0 cooler wouldn't install in the 7.3...which is obviously BS, since so many of y'all have it installed.

It won't "bolt-in" 100%. It will take some modification of the trans cooler lines to get things plumbed. The cooler mounting should be a "bolt-in".

You can always take a picture of the 6.0 cooler in the 7.3 truck and show it to the Ford guy as proof he is "glaringly incorrect" and "a donkey incapable of speech".

I had a disagreement with a dealer service manager once on the subject of towing in O/D with a 7.3. I pointed out to the idiot that if one was not supposed to tow in O/D, towing on the interstate would not be possible with a diesel. Due to the lower operating RPM range of a diesel if only 3rd gear was used, the engine would be at or near the max rpm all day long and shorten engine life.

I love how certain dealer parts or service managers think they are "all knowing" gods.