E40D Problem
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FTE Leadership Emeritus
Joined: Aug 2007
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From: Lakewood, Ca.
E40D Problem
'94 F350 7.5 E40D
30K miles on "new" rebuilt
At highway speed, the trans will occasionally "let go" and "slam" back into gear. This problem is intermittent - sometimes I can drive 40 miles with no problems, sometimes it will happen after 5 miles.
The unit is due for an oil change. Am I correct in thinking this situation goes beyond oil alone?
The oil does not smell burned, and looks pretty good.
Any thoughts or suggestions?
30K miles on "new" rebuilt
At highway speed, the trans will occasionally "let go" and "slam" back into gear. This problem is intermittent - sometimes I can drive 40 miles with no problems, sometimes it will happen after 5 miles.
The unit is due for an oil change. Am I correct in thinking this situation goes beyond oil alone?
The oil does not smell burned, and looks pretty good.
Any thoughts or suggestions?
Postmaster
Joined: Dec 2006
Posts: 2,866
Likes: 1
From: Rockford, Il
hey Mark can a chime in with some aod questions. got a 92 g.marquis, reverse and od are out. also nuetral with engine running will continue to pull. turn it off and i can push it back freely. are these problems that will straighten out with a complete rebuild? or do i have potential hard part problems? thank you much. Dan
Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,696
Likes: 2,618
From: SE Florida
Your forward clutch has failed. You need to take it apart to see what needs to be replaced.
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New User
Joined: Apr 2008
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if their is a sensor on the truck it was changed. I did find an emerecy procedure posted that would allow you to drive if the solenoid pack went out. Tried that and it worked fine. The pack and torque converter is the only thing that has not been changed.
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e40d problems
Here is the whole story. this is a '91 e-350 ambulance. about 8 months ago while going down the high way at about 80 mph it slammed out of over drive and back in once. the more we used it the worse it got. We changed the TPS and the shift sensor on the side of the transmission, still got worse. We changed the rpm and speed sensors, no change. It seems to be very throtle position sensitive un till the trans warms up, then it gets really bad. We were thinking about changing the selinoid pack, we have another '91 next to this one, not sure if that could be the problem and not sure how to change it anyhow.
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