I have had a problem with my truck now for over a year with very little help fom the dealer. When my truck comes to a stop the back end rises slightly the drops down (reminds me a 78 ford I had with U-Joint problems) in addition it also seems to slip a bit when taking off. I have had it looked at twice and they cannot seem to locate the problem but suggest it may be the shackles. One thing I discovered recently is if you shift to neutral before stopping it stops normally. When I say normally it just stops, doesnt have the slippage. This problem is very hard to explain and I would welcome any suggestions to resolve this very fast as my Warranty runs out in 2k miles & I have a sinking feeling the dealer will magically find the real problem after that time at my expense.

99 F-150 SC xlt
4.6
3.55 reg axle

 

I'm glad I'm not the only one to have noticed this situation. I have noticed that it only occurs once or twice in the morning, but I can't be sure if it's not because I have noticed it and changed my braking action, only to do it again the next morning.

98 F-150 SC XLT STX
3.55

 

Hi! I also have the banging problem in the rear end. The ford service shop foreman said that it is a problem with all ford trucks, ford knows about it, they don't know how to fix it and I should learn to live with it. I love the truck and would rather not!!!. Please, any help will be appreciated.

97 4x4 sc flareside 4.6
stock for now but working on chip!!!!!

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You may want to check the transmission mount (where trans. bolts to frame crossmember), or check tightness of u-bolts that go around axle housing (4-bolts, on top of diff. housing on each side). U-bolts may be loose.

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1999 Teal Blue F-150 S/C
4.6L, XLT, 3.55 L/S 4x2
Tow pkg., Rhino liner, Engine block heater & Swiss hard toneau cover. Premium sound
255/75 R16 Generals-owl
This" is Mama's pride"

 

Thankyou you all for your help! I am taking in again Wed. to have ot lookes at again if they cannot locate the problem I will try the fixes mentioned here!!!

 

LUBE THE SLIP YOKE on the rear driveshaft. THIS WILL cure the "slip on start" and probably the bump you feel on decel.

 

Hey RTUCKER, I would be very interested in seeing how you make out on wed. at the dealer. Can you please let me know? Thanks!!!!

97 f150 4x4 sc flareside toreador red
nurf bars, wheelskin, towing pkg.
working on a chip!!!

 

NOMOAPR4ME WAS RIGHT! They told me ford issued a tech sheet on this problem and in the 25mile drive home it drove like it did new. It was so strange to expect that thump at each stop and it did not happen. I have no idea why greasing the yoke fixes the problem but at least for now it has. I now love my truck again!!!!!!!!!

 

Thanks guys!, I am taking my truck to the dealer on monday to have the lube done and to have them ck. my drive axle as a trans. shop guy told me that somebody hammered on the shaft to straighten it out (no vibration) maybe its all connected.
Thank for the advice!!!!