Transmission Problems ONLY when towing
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Junior Member
Joined: Sep 2007
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Transmission Problems ONLY when towing
Hi,
I have a 1999 Expedition with the 5.4 Triton engine and it seems to have a problem right around sixty when it sounds like I am running over rumble strips. The noise was coming from the backend until this past weekend when I was taking the boat out and the transmission started jerking with what sounded like a switch being switched on and off directly under the dash where the steering wheel is. VERY odd, I let off the gas and it stopped and then back to the rumble strips. Now whenever I go over 65 to about 70 the noise stops as well. My past experience would have indicated this was a problem with the driveshaft u-joint, but the noise under thedash and the jerking really shot up a red flag. Any help?
Ryan
I have a 1999 Expedition with the 5.4 Triton engine and it seems to have a problem right around sixty when it sounds like I am running over rumble strips. The noise was coming from the backend until this past weekend when I was taking the boat out and the transmission started jerking with what sounded like a switch being switched on and off directly under the dash where the steering wheel is. VERY odd, I let off the gas and it stopped and then back to the rumble strips. Now whenever I go over 65 to about 70 the noise stops as well. My past experience would have indicated this was a problem with the driveshaft u-joint, but the noise under thedash and the jerking really shot up a red flag. Any help?
Ryan
Senior Member
Joined: Aug 2003
Posts: 933
Likes: 1
From: in a van down by the river
Torque converter shudder is my guess if the U joints are good.
(im getting mine replaced in my 05 and it did exactly that when it was trying to lock the coverter in or release it....i had a factory rebuilt tranny put in and they had a year and a half with bad torque converters so its back at the shop to get a new tc put it.
This is just my guess though.
(im getting mine replaced in my 05 and it did exactly that when it was trying to lock the coverter in or release it....i had a factory rebuilt tranny put in and they had a year and a half with bad torque converters so its back at the shop to get a new tc put it.
This is just my guess though.
