I have had the "trans shudder" problem with my 97 E250 (5.4) since I bought it used. The dealer replaced the torque converter and it still had the problem (going up hill before it would down shift it would shudder). Even though I had a 30 day warranty, being self employed I couldn't afford to be without the van again so I have been just either nailing the gas to force it to down shift or keeping the OD off.
I finally fixed it myself. About a week ago I had some free time (a rare occasion) so I got a couple bottles of fuel injector cleaner filled the van up with 92 octane (I normally use 87) then I reset the computer. NO MORE SHUDDER! Next fill-up I put 87 octane in it and the shudder was back so after about half the tank was used I filled it with 92 again and now I only use mid grade gas with no shudder.
Now the only problem is what needs to be replaced? knock sensor? My van should run on 87 octane without any problems.

[This message has been edited by Darin (edited 04-03-2001).]

 

glad you got that fixed
Jim

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97 4x4 Off Road Package 4.6l, Flareside S/C Dark Toreador Red
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