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Transmission perfect one minute and does nothing in any gear the next


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MBarden1
New User

Nov 28, 2011, 4:48 PM

Post #1 of 6 (1689 views)
Transmission perfect one minute and does nothing in any gear the next Sign In

I have a 1997 expedition 5.4 liter engine 4x4 with 199k on it. I was driving and slowed down for a speed bump and shortly after the speed bump my trans did nothing. In any gear the engine reved like it is neutral or park. The transmission shifted perfect before this, no issues! The truck rolls like its in neutral, and when I try shifting from gear to gear I don't even hear an engage or a click. There is no burn in the fluid and levels are where they should be. Please help!


Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

Nov 29, 2011, 12:55 AM

Post #2 of 6 (1666 views)
Re: Transmission perfect one minute and does nothing in any gear the next Sign In

Seems like something got damaged by that speed bump? Gotta go look for physical evidence - leaks, or who knows what?

T



MBarden1
New User

Nov 29, 2011, 1:08 PM

Post #3 of 6 (1654 views)
Re: Transmission perfect one minute and does nothing in any gear the next Sign In

No leaks fluid levels all look good! I didn't bottom out on the speed bump. It didn't just quit until after my rear tires had passed over the speed bump!


Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

Nov 29, 2011, 2:35 PM

Post #4 of 6 (1648 views)
Re: Transmission perfect one minute and does nothing in any gear the next Sign In

IDK - so fast after this speed bump you should be looking for it shifting with a helper shifting it - things that might be damaged by this.

If this vehicle won't even hold in park the linkage must have given out somehow??

T



MBarden1
New User

Nov 30, 2011, 2:49 PM

Post #5 of 6 (1623 views)
Re: Transmission perfect one minute and does nothing in any gear the next Sign In

Ok I have park! Park works but nothing in any other gears. Checked for possible fuse blown on power train module fuses all good. So my other options would be .... I lost the pump in the trans? Or it dropped the filter inside the pan thus not allowing it to pick up fluid? Or is it possible clutch issue inside the trans?

In Reply To


Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

Nov 30, 2011, 3:35 PM

Post #6 of 6 (1619 views)
Re: Transmission perfect one minute and does nothing in any gear the next Sign In

Wild guessing: Not caused by some computer control as it should if anything default to something not just nothing. Do you have a history of service on this vehicle since new or recent work or service on trans?

Yes/maybe: If for some whacked reason filter fell down or something that stopped it from picking up fluid that could explain it but would think you'd be measuring a height fluid level on a dipstick for ATF - guess.

If wishing for a miracle go ahead and take pan down and see if anything is unusual or have it towed for a diagnosis to a shop that frequently does trans work or just trans work.

If nothing done in 199K it was on borrowed time IMO anyhow,

T







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