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03 Expedition Trans O-D Problem

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Old Nov 28, 2012 | 10:34 PM
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03 Expedition Trans O-D Problem

When shifting into OD, or downshifting from OD, there's a loud clunk as if I hit a pothole. A trans repair shop told me it was the knock sensor - WRONG!

Any suggestion as to what the problem could be?
 
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Old Nov 29, 2012 | 05:22 AM
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Are you referring to the 3-4 upshift and the 4-3 downshift?

Other than the audible symptom, any other symptoms, either at this shift point or some other?
 
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Old Nov 29, 2012 | 07:46 AM
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Yes, 3-4 and 4-3. Beside the audible, this can also be felt.
 
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Old Nov 29, 2012 | 10:09 AM
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First inspect the tranny and transfer case mounts to make sure they are not broken. If the mounts are okay, remove the driveshaft and give the slip yoke a good greasing.
 
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Old Dec 5, 2012 | 02:16 PM
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RE-Manu Unit

It was torque convert chatter and a re-manu Jasper unit was installed.
 
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Old Dec 8, 2012 | 12:23 PM
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How much did that cost... I may be in the same boat
 
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Old Dec 9, 2012 | 08:35 PM
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The Jasper unit was $2997. installed with a 3yr/100k warranty. Took it on the road this weekend and it shifted SOOO good.
 
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