TechnicallyReal
Well-Known Member
I've started to notice many of the shifting issues you've mentioned. The ones that really started to worry me are the random delayed shift into reverse and sometimes being very harsh when doing so.@VegasRanger glad that the shims helped resolve the shudder. Mine also had a little hint of shudder after shimming the center bearing. What struck me as odd was it was inconsistent and seemed to do it more when the truck was cold vs if I had been driving for more than 30 min. When looking up issues with this transmission and torque converter shudder led me to discover that Ford has had issues with properly filling the 10R80 by as much as two quarts. This is well documented on multiple different forums and TC shudder along with some of the other issues I had like erratic, harsh shifting, random delays shifting into reverse as well slamming into reverse from drive are all possible symptoms of low fluid. I checked the fluid level (pain in the butt) and found it to be underfilled and took it to the dealer and had them re-check it and they confirmed it was about 1.5 quarts low and topped it off. Since doing so, the inconsistent shudder is gone, as are the other issues I had been having. So it might be worth checking the fluid level or have the dealer check it the next time you take it in.
Is there a way to check the fluid level easily at home?
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