Need help with rear end vibration
#1
Need help with rear end vibration
Hello I own a 2002 Expedition 2wd. The truck drives great the only problem I have is on the highway about 50mph the rear end vibrates for just a second and it feels and sounds like we hit the rumble strip real quick but we dont. It does not happen any other spped just around 50 and like I said only last for a second. Any ideas???????
thanks
thanks
#2
#3
That would be about the speed that the torque converter clutch locks up in overdrive. I suspect that you are experiencing torque converter clutch chatter. When was the transmission fluid changed last? Usually changing the fluid eliminates the chatter.
#4
thanks
#5
#7
I also agree with the guys above. When my 4r100 tranny did the same and chattered like rumble strips, shifting into OD, I changed out the ATF. It didn't immediately fix the issue but after some additives, including Slick 50 tranny, and eventually, Lucas Oul tranny additive, the rumble finally went away.
I know many here don't recommend additives but it worked for me.
This was probably 10 yrs ago and it's never come back.
I know many here don't recommend additives but it worked for me.
This was probably 10 yrs ago and it's never come back.
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