i have 5R110 and it is actually my third one. but about a month ago i noticed my fluid temp slowly creeping up. i got out checked fluid it read full and didnt smell burnt. this has progressively been getting worst up until today when i traveling a total of about four miles red light to red light it reached 210 in 104 weather. I know fluid starts to cook around 220, but i am worried it will get there. any suggestions. fluid change and flush maybe moded cooler suggested addictives. I really dont need to toast another one.
I think you may have plugged coolers. Are the two trans coolers the same ones for all three transmissions? If so, parts of the first two transmissions are plugging the coolers, preventing them from cooling the fluid.
There is no way to clean them, they have to be replaced.
i am not to positive but am nearly positive that the company who replaced the tranny flushed it extensively if not replaced it. I tank this chart is very comforting hahah i am haunted by the 5R110 and this is the first tranny that i have witnessed get hot the others i just grenanded them.
Your cooler was flushed every time. It was not replaced per Brian's instructions. we also changed the external filter at the front of the truck, but it may help to change that again.
being 104 outside, they are going to run hot. just about every 6.0, even stock, runs 170-190 in this weather. 210 is a little hot for comfort though. Change the spin on filter on the front of the truck, and drop the pan and do a flush/filter change. Mercon SP is the ONLY fluid you can use.
btw, ill check your tune out to make sure none of the fan settings were dicked with. Can you hear the fan come on from time to time or is it NEVER on?
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why cant the coolers be flushed, and thanks chris i was not doubting you didnt flush the coolers but i will certainly flush and change the filter soon. at night the temp sits at about 150 and it really hasnt climbed anymore and no i dont ever here the fan kick on
There are things called turbulators in the coolers. These disrupt the flow of ATF in the coolers. They also make excellent traps for small bits of debris. You'll never get all the bits out, but over time some of them will work loose and find there way into the new trans, which can cause failures.