IF you feel like you're having "drivetrain issues", or you feel like you're being rearended when you're coming to a stop, it's not the transmission 2-1 downshifting, contrary to popular belief. I'm sure it has been discussed here in the past, but because of this thread, I'm starting this one.

There is a TSB out for this feeling some of you are experiencing. I'm not sure of the exact number, and if anyone knows it, please post up. I told the dealership what I was feeling and they took care of it by regreasing the slip yoke with some teflon lube. It has taken care of the problem as intended. I've done all I can to recreate what I was feeling before with no success. Before having this done, it felt like I was being hit behind with some pretty decent force. Enough to make you look in your mirror to see if you had actually been hit!

I can't tell you just how long it takes them to do this, as when I had it done yesterday they were extremely busy, and I had an oil change and tire rotation done on top of that. I was rolling out of there in about 2.5 hrs.

 

Good to hear. There have been several people who said they had a sloppy feeling shift between 1-2 and that a Ford TSB ("reflash") helped solve the problem.
I've only had my truck for 2 days and after reading your initial post I tend to think it is a slip yoke issue. My 2004 Chev Silverado had a very similar issue which was quickly resolved with a TSB from GM.
Hope this is the same, although it does not feel like too big of a deal right now.

 

I am thinking what you are feeling (and I as well) is the slip yoke in the 2 piece drive shaft. If I could change anything about the truck it would be so that I dont hear/feel a clunk 2 or so seconds after I start from stop and approximately the same right before I come to a stop. There is obviously some slop in the connection point between the two pieces. To my knowledge all of the longer F150s (even on my buddies 06 Screw) have 2 piece drive shafts.

Actually, I cannot tell you how annoyed this makes me. If I thought this would never be fixed I would trade it in.

J

 

Some do experience tranny issues and I'm not trying to deny that. I know what both feel like as I experienced the tranny shifting sloppiness when I first got the truck. That never felt like feeling of being rear-ended like this slip yoke problem did. After 5k miles, the TCM was done with the learning process and started shifting normally. And now that I had this TSB performed, it feels like a solidly built truck and I am a happy camper!

 

I have the 5.5ft bed and just the single drive shaft, but yes, you are correct. The drive shaft does have to be disconnected to perform this procedure, but so far well worth it!

The last time I was in for service I talked to the service director about this and he took me back into the shop and showed me a truck up on the rack and explained where the clunk was coming from and how they would fix it for me.

So far I am very satisfied with the service. They are a bit expensive, but they have given me two free oil changes now. The first one they gave me never made it in their records.

 

So people with 5.5 ft beds are also experiencing this? For both the 4x4 and 4x2? I have a 2010 4x2 with a 5.5 ft bed and haven't experienced this.

 

I'm not sure what the actual breakdown is on 4x2 vs 4x4 and 5.5' vs. 6.5' bed trucks feeling this. I guess if someone were curious enough, a poll could be set up.

So for me:

Screw 4x4, 5.5' bed - felt the clunk

 

im also looking to have this problem fixed but my question to you is, isn't that part of warranty? why did you pay to have it done? its ford's mess up, i think they should fix it...o & also by expensive how much you talkin? if you dont mind me asking

 

Ooops, you misunderstood me! I was talking about the dealership being expensive in general for their service work. The regreasing was definitely covered under warranty, but I also had a oil change done, which was complimentary. The only thing I paid was $20 and that was for my tires being rotated.

 

Mine does this some times and I thought it might be the gas in the tank sloshing around. I've driven trucks with large water tanks that felt like that. Thanks for the info.

 

ooooo ok gotchya pheeeewww.. i thought i had to fork out money for this i was about to flip lol... you don't have a tsb number? it should be on the receipt print up they give you at pick up.. did this improve all thoughts on the transmission?

 

I looked the receipt up and down just now and couldn't find an actual TSB number. Don't hold me to this, but a search on google brought back TSB #09-25-5 from a Ford forum that posted that 15 days ago.

As for the tranny, yeah, so far everything has been great after I passed the 5k mile adaptive learning process. It still would hunt for gears when cruising on the highway and stomping on the gas to make a pass, almost like turbo lag. Now I know many have their hatred for K&N filters and swear against them, but I put a drop-in filter in today and noticed that throttle response is a tad bit better. It doesn't just sit there now when I stomp on the gas. No comment on MPG for actual power gains, but it does sounds more like a V8 now at WOT. And it only cost me $40 so no sweat off my back. That's what the dealer was charging to replace with a stock filter.

 

Hey guys (gals too, it is an all encompassing term in my family)

This is nothing new, as this has been an issue since the 2004 rework of the F-150. My old 2004 FX4 had it, My new 2010 is starting to as well. After the warranty periodMy local service place brought in the special grease and I have it done every other oil change. No big deal, they charge me 20 to do it.

My only concern is the rear u-joint, which failed on my '04, and it took a new drive-shaft to get the u-joint because of a production issue back then. Hopefully that has been worked out by the boys in blue.

BJ

 

Interesting that this topic comes up. I had this exact same problem on my '02 Chevy and know that even the new body-style GM trucks have this problem. I have had my '09 for about 9 months now and have almost 14,000 miles on it and have started to notice a slight 'bump' when the truck comes to a stop. It feels exactly like the GM problem but I was not aware that ford was known for having a similiar issue. I haven't really had any reason to take it in for warranty work - this might be the first thing I have done to it.

Is there a zerk on the slip yoke that will allow us to grease it ourselves? To the poster above that mentioned your local service shop does it for you...do they remove the driveshaft each time? I know it isn't hard to remove a driveshaft but it just seems like a lot of work to do every other oil change.

 

05 F150 FX4 78K miles.

Mine did it new, maybe 2,000 miles.
Dealership took a peek and lubed it, went away until.

Now (78K miles), Dealership took a look, lubed it and said there were some metal shavings but not that bad. They said I'd probably need a new Drive Shaft in a couple years. They said there wouldn't be a catastrophic failure but just more consistent clunking down the road.

I'm kinda pissed, this should not have happened at 2K miles or
78k miles. I would think that major part should last much
longer than that.