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1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

'96 F150 "bump"

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Old Jan 25, 2001 | 08:10 PM
  #16  
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'96 F150 "bump"

Hy guys, I just went to alldata and looked up TSB's on drivetrain for my '95 and there is one for a replacement slip yoke and u-joint.It said that engine torque wont let yoke splines to slide smoothly on trans output shaft.This applies to '92-'95 f150-f350,under 8500gvw.
 
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Old Jan 26, 2001 | 10:41 AM
  #17  
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'96 F150 "bump"

[font size="1" color="#FF0000"]LAST EDITED ON 26-Jan-01 AT 11:43 AM (EST)[/font][p][font size="1" color="#FF0000"]LAST EDITED ON 26-Jan-01 AT 11:42 AM (EST)[/font]

Any chance of posting that. We have a local motor head who does car talk on radio and paper and I recall him talking about this. If you can't post how about an e-mail to mike.dalton@efi.com.

It would surely be appreciated. It makes me cringe every time I hear it.

 
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Old Jan 26, 2001 | 05:35 PM
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'96 F150 "bump"

OK guys, help me out here. What is a TSB? Anyone got an idea on how much $$ to solve the problem? It annoys me enough to fix it, unless it's really expensive.
 
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Old Jan 26, 2001 | 08:41 PM
  #19  
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'96 F150 "bump"

If you guys are just hearing a squeek when you start of it's probably a bushing somewhere.
I had a nasty creak pop up about 2 weeks ago, put new radius control arm bushings on it today and my creak is gone, I just had new rotors/pads put on the front and when they were under there they noticed the bushings were cracked in half, my creak is gone with new poly-urathane bushings in there.

1995 F-150XL SC/SB
http://members.sounddomain.com/blind
5-Star Rated F-150 (Big Stereo)
 
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Old Jan 26, 2001 | 10:30 PM
  #20  
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'96 F150 "bump"

Windsor do you remember if that TSB applied to 2 wheel or 4 wheel drive or both.I had to replace the u joints on the back shaft at 38,000 on my 93 the back joint was toast.One day it was raining and I watched water drip off the drive shaft at the back u joint after seeing that I knew why I lost the rear joint so soon.The last time I saw my 79 it had 227000 on it with the same rear end.
 
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Old Jan 29, 2001 | 08:34 AM
  #21  
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'96 F150 "bump"

I'm leaning towards the noise coming from the yoke at the front of the driveshaft. I've seen posts regarding replacing it as well as the frint u-joint. How much?

I've also heard of a special lunbicant for the yoke itself. Would squirting some liquid grahite on the splines help or hurt?
 
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Old Jan 29, 2001 | 08:58 PM
  #22  
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'96 F150 "bump"

Alanb, I have had a noticable bump that has progressively gotten worse. I have a 92' F-250 w/ 351 V-8 and C6 automatic trans.Today I pulled it in our shop and took a look at the drive train. It would thump the most when gassing down. I found that both of the bolts that attach the trans mount to the trans itself had fallen out. They were gone! The threads were still good so I just replaced the bolts with lock washers and locktite. I checked out the underside of the truck while I was there and found that the front axel pivot point bracket for the passenger side of the front axel was loose. All of the bolts were loose and I could turn the nuts by hand. I tightened the bolts and checked out everything else. After I was done I test drove the truck and found that not only did the klunk noise stop, but my steering had tightened up quite a bit. The trans mount was the main problem for the noise. The axel bracket only seemed to klunk when driving over a speed bump type of situation. I never noticed how loose the steering was until I tightened up the bolts.

Jakegypsum // Ford fleet, soup to nuts.
 
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Old Jan 31, 2001 | 06:45 PM
  #23  
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'96 F150 "bump"

Hammer,the info I have says 4x4.92-96 F150/250 under 8500 GVW and 92-95 F-250/350 over 8500 GVW.There is suppose to be a new yoke with a High Phosphate Nickel coating on the splines to help yoke slide on output shaft.I'm going to my local ford truck dealer with the info I have and find out what is going on.I'm going there on 2/1/01/and I will let you fellow ford fans know also.Sorry it took so long for a reply,I got(3)wisdom teeth pulled and haven't been in a good mood,lol.But trust me I'll get some answers and price and availability.And also to the guy who asked what (TSB)stands for its Technical Service Bullitens. Later
 
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Old Feb 1, 2001 | 08:45 AM
  #24  
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'96 F150 "bump"

Windsor,

Thanks a lot. I look forward to what homage the dealer will require. I wonder if there is a way to find out if the TSB has already been done?
 
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Old Feb 1, 2001 | 08:01 PM
  #25  
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'96 F150 "bump"

Alright guys here's what I found out.I gave the Ford guys my info that I had printed up and they said that UNDER WARRANTY they will put a new yoke and u-joint on.And if the customer is paying for problem all they do is remove driveshaft and put a good quality grease in the end of the yoke splines and install it.They said that no-one has been back w/ any complaints.I was going to buy the parts which they had in stock,but thought I would try the grease first.The yoke was $45 and spicer u-joint was $10.I am going to do this test this Saturday,so I'll let you know.Also the shop foreman said that this problem is one that you would "feel more than "hear" and thats what mine is doing.Let me know what you guys found out on your trucks and I hope this helps out.Ive still got the part #'s for the yoke/u-joint if anybody still wants to try it. Windsor
 
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Old Feb 1, 2001 | 11:08 PM
  #26  
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'96 F150 "bump"

I was wondering if these trucks have a "Limited Slip" rearend. Sometimes they will clunk on startup as they momentarily lock/unlock. Just a thought...sr
 
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Old Feb 2, 2001 | 08:45 AM
  #27  
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'96 F150 "bump"

Windsor,

What year is your truck. I'm the second owner of a 95 F-150 xted cab swb with 5.8l auto trans. I agree I can feel it. Makes me want to take off hood to make sure the motor is not doing somersaults. Under warranty as in recall or under warranty as in newer rig?

Thanks




 
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Old Feb 2, 2001 | 04:56 PM
  #28  
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'96 F150 "bump"

Mike my truck is a '95 F150 ext.cab swb W/302 and auto trans.The warranty pertains to a new truck and this wasn't a recall it was a TSB and went by a case x case basis.You would be able to tell if your motor mounts were bad because with all that weight moving around you can definatly tell its up front.I had a '93 w/bad mounts and its real noticeable.I also greased the yoke on my truck 2-day and went out and checked and it helped out alot.Its not so extreme.Now all I feel is the axle wind up which is minimal but taking off from a dead stop I can barely feel anything abnormal.So let me know how yours turned out.Later Windsor
 
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Old Feb 5, 2001 | 09:27 AM
  #29  
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'96 F150 "bump"

Windsor,

I'm convinced it is the yoke. I probably will get to it in a couple of months. I live in Minnesota, am remodeling basement and a bathroom (Garage is full) and don't relish laying on my back in the ice in driveway. I think I will ask the local Ford dealer what the partnumber is on the "new" yoke. I want to see if perhaps mine is the "new" or old one.

Thanks

 
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Old Feb 6, 2001 | 07:21 PM
  #30  
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'96 F150 "bump"

After some hands on I am going with the guys on the front yoke situation. My 4x4 seems to have lots of front yoke lash. I have not found any loose bolts (jake gypsom) and the truck's back dif is open (stevie ray) I will try the grease. If the price for the yoke is consistent in my area, I may consider that. Appreciate you guys on the input. Perhaps there are multiple auses.

 
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