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Discussion Starter #1
HI, Just rebuilt my car after my sister wrecked it three years ago. Now sometimes I get a bad vibration for a second or so when it shifts into Overdrive. Is the fluid bad from sitting for so long or is the trans going out.
94 4.6l 124,000miles
thanks
 

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might be TC shudder. I would drain the TC and pan of fluid, change the filter and refill w/ Mercon V and see if that doesn't take care of it.

Does the vibration feel like you are running over the rumble strips on the highway shoulder?

Jay
 

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Discussion Starter #3
It feels exactly like driving on a rumble strip. Is that a sign of imminent failure? I was planning on taking a road trip soon
 

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Agreed,, had a 93 lincoln do the same thing at 105K miles.. drain the TQ converter and changed the filter and refilled with mercon V plus I added a bottle or DR. Tranny shudder fix and its been smooth as silk for about a year now.
 

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You may also want to add a 24K or larger trans. cooler. Couldn't hurt.

Jay
 
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