Archived Transmision woes. Truck down since July.

[ABeattie]

I do not think there is a oil line thermostat, and i replaced the trans cooler. But I still have not found out if I can leave the check valve out of the coiling system.

 

[JoshPeters]

You can leave it out, but... . when you first start it up in the morning or after sitting for a while you will have to put it in Neutral to get the fluid flowing through all the nessissary places, (coolers, etc) before it will go into gear.



Josh

 

[LMcCary]

Then if you are comfortable with the cooling, it must be the trans. It is a simple process of elmination. Does this truck have a aux. cooler?

 

[ABeattie]

I thought all diesels where setup with the engine mounted cooler and the front mounted oil cooler that sits in front of the radiator. I am going to change out the stock one on the front up tp a 5/8 tube x1 1/2 thick x 21 inches long.

 

[ronco]

I know the least of anyone about autos, but I have a suggestion. If the PCM is not locking the convertor, couldn't that result in the heating of the trans and therefore, failure?



Ronnie

 

[LMcCary]

Some have a bed mounted aux. cooler with an electric fan on top. It is usually mounted on the left side just in front of the rear axle.

 

[Extreme1]

I thought all diesels where setup with the engine mounted cooler and the front mounted oil cooler that sits in front of the radiator. I am going to change out the stock one on the front up tp a 5/8 tube x1 1/2 thick x 21 inches long.

All Dodge autos do come with two coolers, and you should definately remove the check valve from the line. I'd stick with the stock cooler up front, removal is a paint because the bumper has to go to get the lines out from around the radiator support. The stock type mini radiator is much more efficient than the tube type coolers.



The engine mounted cooler is a tank type heat exchanger, easy to flush out in place with the lines off.

 

[ABeattie]

I think I will leave out the check valve. After hearing what everyone has to say, I think it would be wise. But I did some checking on flow and cooling, and talked to 2 guys that have the larger cooler that i have ordered and there trans temps went down when installing the larger cooler.

 

[Joe Mc]

I "think" before adding another item to the equation you should eliminate / locate the existing problem. From the work (very little if I remember correctly) your truck is doing now the stock coolers should be more than appropriate. MHO is to find the present problem, fix it, then if necessary based on work load and trans temps add the other cooler. Please continue the updates.

 

[mdepot]

Could the rear end not be setup properly, causing too much stress on the transmission?

 

[ABeattie]

Beleive me , even with putting a heavier cooler on I will know if the problem is there or not. But the trans company has that little line on there warranty that states that you have to change the cooler with changing the trans or no warranty.

 

[ABeattie]

I have never had a rear cause a trans heating problem, but ok. I have driven the truck for a year and there is no problem with the rears. If you have a problem with the rears not being setup right you notice it a all speeds.