96 Dodge transmission foaming

37 chief · Jun 18, 2022

I had my transmission rebuilt not long ago. The oil is still pink, but foaming on the dip stick when checked. I thought it may be low. I added fluid.
Still a little foaming, but not bad. Now the fluid is an inch or more above the full mark. Will over full be a problem? Stan

710ltd2002 · Jun 18, 2022

Do you have any leaks? I recommend taking a close look at all the cooler lines running between the trans and the radiator. About the levelWe are always warned that too much fluid can damage the seals. I dont think I would worry if its an inch or less above full when it is good and hot. However, I say that knowing that if it did do damage, I would be repairing it. Dave

timcasbolt · Jun 18, 2022

(quoted from post at 17:55:31 06/18/22) I had my transmission rebuilt not long ago. The oil is still pink, but foaming on the dip stick when checked. I thought it may be low. I added fluid.
Still a little foaming, but not bad. Now the fluid is an inch or more above the full mark. Will over full be a problem? Stan

think you should consult with the person that rebuilt the trans.

Geo-TH,In · Jun 18, 2022

Isn't the transmission fluid cooled inside the radiator?
Radiator is under pressure. Coolant in transmission oil only thing that makes
since. Probably no transmission drain plug.

DoubleO7 · Jun 18, 2022

How far up the dipstick?
Not foaming out the tube?
How long ago was it rebuilt?
Maybe the rebuild shop put some sort of high detergent fluid or cleaner additive in when they filled it.

Geo-TH,In · Jun 18, 2022

Install an exterior transmission cooler. Then see if the coolant runs out where the transmission lines connect to the radiator.

If it does, Then get the transmission fluid changed. Perhaps get a new radiator if it's old...

Instead of a cooler, For a short time use a gas hose and connect the 2 transmission lines together..

My money is a bad radiator..

jimg.allentown · Jun 18, 2022

Transmission fluid is cooled by a coil that is located inside one of the radiator tanks.
Cooland is under pressure while the engine is at operating temperature - about 15 psi.
Trans fluid is also under pressure - much more than 15 psi as it passed through the radiator.
However, once the engine is stopped, it is possible for coolant to enter the transmission cooler.

jimg.allentown · Jun 18, 2022

Overfull can cause foaming, but it is not a normal condition. Foaming can also be caused by a loose filter drawing air into the pump. If, by chance, coolant is getting into the transmission, it will destroy it quite rapidly. Transmission oil and coolant simply do not like each other, and exposure to coolant has an undesirable effect on friction surfaces.

I suggest you get it checked very soon or you could be looking at another more expensive rebuild.

wore out · Jun 18, 2022

(quoted from post at 16:00:40 06/18/22) Transmission fluid is cooled by a coil that is located inside one of the radiator tanks.
Cooland is under pressure while the engine is at operating temperature - about 15 psi.
Trans fluid is also under pressure - much more than 15 psi as it passed through the radiator.
However, once the engine is stopped, it is possible for coolant to enter the transmission cooler.

If it's an HD pickup it's quite possible the transmission cooler is already external to the radiator.

37 chief · Jun 18, 2022

I thought it was low on fluid, causing the pump to suck air. So I added too much fluid. I removed a qt and 1/3. Fluid is in the middle of the hash mark on the stick now. The fluid doesn't seam to be foaming now. I removed fluid by installing a clear plastic tube down the fill tube, and sucking about 1/4 cup with each suck. It didn't take too much time. I did have to stop and rinse out my mouth one time. Stan

caterpillar guy · Jun 19, 2022

All the more reason for those Clutches and gears with a lever out the top.

Den N Ms · Jun 19, 2022

37 chief , A siphon gun is a handy cheap tool to have around the shop.Next time you are at the parts store or Harbor Freight pick one up to have in your shop. :idea: :wink:

37 chief · Jun 19, 2022

About ready to start using my bothers 85 ford 350 with a 6.9 standard trans. Probably by next year. Stan

Bruce(OR) · Jun 20, 2022

Auto trans works on fluid pressure. That air is damaging things. Fluid too high in the trans is getting up into the rotating mass.
Yes, your fluid is too high. I have previously lowered overfilled trans with a mayonnaise jar, two rubber hoses, sealed with RTV, long hose down the trans tube, short hose to an engine vacuum source, start the engine and let the engine remove the overfilled fluid.
One slight drawback is making sure the trans fluid does NOT get pulled into the engine.
Great smoke show if it does and can damage the converter if the vehicle is equipped with one.
Most of those suction gun hoses are too large or difficult to slide down the trans tube.

96 Dodge transmission foaming

37 chief

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710ltd2002

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timcasbolt

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Geo-TH,In

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DoubleO7

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Geo-TH,In

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jimg.allentown

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jimg.allentown

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wore out

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37 chief

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caterpillar guy

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Den N Ms

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37 chief

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Bruce(OR)

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