I have a transmission cooler and gauge and I have been having issues with it running to cool. Im lucky if after 30-40 mins i get 130-140 degrees. I put a peice of cardboard across my cooler in hopes to get the temp up but nothing has worked yet. Will taking my cooler out of the loop help?

 

Heat kills trannys, Most others would love to keep the temps down where you are at. Are you having any problems with the tranny?

 

What were your prior temps?
Did you by-pass the in radiator cooler?
Which transmission and cooler, and in what truck?
Where is your temp sender located?

My first thoughts are that the cooler you added is to big. But that may or may not be the case depending on your answers.

For what its worth, my f350 E4ODs fluid is right around 160* in the output line from the torque converter with normal driving.

 

I have a 92 150 with an e40d.

I have the size recommended for an add on cooler. Something like a 15x10 I think.

I piped it from transmission through radiator then out to add on cooler the back to Transmisson.

The test port is where I installed my sender for the gauge.

I wanted to protect my transmission so I added the cooler. Didn't get a gauge till a week ago. But after adding the cooler the transmission seemed to surge and act Funny. seemed to be showing signs of tourque converter shudder, so I had it serviced. When I got done getting it serviced the problem got worse. My mechanic when I told him about it told me the Transmisson was on the way out and I should look into a new transmission. I thought maybe a new conveter would help but he said it would be a waste of time. So I was thinking let me out a gauge in and see what my temp is so I can make sure I'm not over cooling it and causing my issues. I'm thinking I'm right because most of the days it's around 40 50 the most outside and It barely get 120. If I'm in traffic or slow moving it bucks and doesn't like to drive and it gets worse as it gets colder. In the afternoon on the way home it's a bit better but not much

 

Transmissions are just like engines, too hot is no good, and too cold isn't good enough. A transmissions ideal range is right around 165-190*F IIRC.

Your cooler is way too big (and possibly restrictive) if it is struggling to get to 120*F

The cooler plays an extremely important role - the E4OD's fluid return port is what supplies lubrication to the rear of the transmission. Not enough fluid flow, and it will eat it self quickly.

I'd take the external cooler out of the loop, and make sure you have good fluid flow at the return line on the transmission.

 

Thanks ill give that a try tommrow

 

https://www.ford-trucks.com/forums/7...l#post10773358

 

Ok I didnt get what the link was for at first but after some re reading i realized what it is. Question is how does it work? Does it stop the flow of fluid till its up to a certian temperture?

As for an update I removed the cooler and took it out of the loop. I took a short drive and while it seemed to run a bit better,Still had alot of fluid in it to accomidate for the external cooler, It seemed to warm up a bit faster but I went maybe 15 mintue drive and got maybe 110 degrees better then what i would have normally gotten but I would think I would be up to around 150 or so when my engine is up to warm normal operation?

 

it's explained in the pic.here it is again.