2004 F-150 SC 4x4 132,000KM

I live in Quebec (Canada) We have horrible roads, not one street is flat! Every time I hit a pot-hole I here a clunk sound underneath my truck. When I hit a dip the truck just bounces like it should but if I hit a hole or take it out to the cabin where its a gravel road you can really hear it and feel it in the steering. I took it to my mechanic to check it out about 2 weeks ago and he noticed that their was play in the front driveshaft? He checked everything else over and said they were in good condition. He was able to make the exact sound that I was hearing when I went over a big hole. So I don't know how I can get this play all of a sudden. I took a 2004 out for a test drive about 4 days ago and it did not make this sound. I just want to know if anybody has experienced this?? I can feel it on the highway too, it's not as loud but it just makes my ride very bumpy for me and my steering. Any information would be great! I don't really want to go buy a new driveshaft and have this same problem afterwards.

Thanks

 

Try this, it could the problem.
FORD: 2004-2005 F-150
LINCOLN: 2006 Mark LT


ISSUE:
Some 4x4 2004-2005 F-150 (excluding Heritage) and 2006 Lincoln Mark LT vehicles build prior to 7/1/2005 may exhibit a rear driveshaft slip-bump concern on deceleration or acceleration from stops.

ACTION:
This condition can be attributable to the slip yoke of the rear driveshaft having not been lubed when the vehicle was built or wear/flaking of the spline nickel coating. Refer to the Service Procedure.

SERVICE PROCEDURE

Remove the rear driveshaft per Workshop Manual Section 205-01. Be sure to index-mark the driveshaft during removal to maintain alignment during reinstallation.
Inspect the rear driveshaft slip yoke for the presence of grease. If no grease is present proceed to step "a" If grease is present proceed to step "b".
If the splines of the slip yoke are dry, but do not show any signs of wear, nickel coating flaking, or contamination, then apply 8 mL (0.27 oz.) of the new slip yoke grease, distributing it evenly around the bore. If flaking is found, then REPLACE the rear driveshaft.
NOTE: EACH SYRINGE CONTAINS ENOUGH GREASE FOR 1 SLIP YOKE, THE PART NUMBER IS FOR ONE APPLICATION.



If grease is present, inspect the driveshaft for signs of nickel coating flaking. Flaking can be found by inserting a clean rag into the yoke, wiping the spline surface and then looking for nickel "glitter". If flaking is found, then REPLACE the driveshaft.
NOTE: FLAKING/GLITTER WILL BE VERY SMALL PARTICLES IN THE GREASE ON THE RAG



Re-index and install the driveshaft per Workshop Manual.

PART NUMBER PART NAME
5L3Z-19A506-A Slip Yoke Grease


WARRANTY STATUS:
Eligible Under Provisions Of New Vehicle Limited Warranty Coverage

OPERATION DESCRIPTION TIME
052611A 2004-2005 F-150, 2006 Mark LT One Piece Drive Shaft: Clean And Inspect Slip Yoke Then Grease And Reinstall Existing Drive Shaft, Or If Necessary Replace Drive Shaft (Do Not Use With 4602A) 0.5 Hr.

DEALER CODING
BASIC PART NO. CONDITION CODE
4602 41

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NOTE: The information in Technical Service Bulletins is intended for use by trained, professional technicians with the knowledge, tools, and equipment to do the job properly and safely. It informs these technicians of conditions that may occur on some vehicles, or provides information that could assist in proper vehicle service. The procedures should not be performed by "do-it-yourselfers". Do not assume that a condition described affects your car or truck. Contact a Ford, Lincoln, or Mercury dealership to determine whether the Bulletin applies to your vehicle. Warranty Policy and Extended Service Plan documentation determine Warranty and/or Extended Service Plan coverage unless stated otherwise in the TSB article. The information in this Technical Service Bulletin (TSB) was current at the time of printing. Ford Motor Company reserves the right to supercede this information with updates. The most recent information is available through Ford Motor Company's on-line technical resources.

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