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Clunking, Thanks

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Old Oct 27, 2004 | 06:47 PM
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Clunking, Thanks

Alright guys, When i'm stopped at a light and push on the gas (hard or soft) I hear a clunk. Its not the brakes but Im wondering if it could be the driveshaft or possibly even a transmission problem. When i push on the gas at any other time it works great, its just when I am at a complete stop. Thanks
 
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Old Oct 27, 2004 | 07:17 PM
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Not sure. My '03 does the same thing sometimes, and it has since it was new, but I don't worry much about it. Is this something that has just started happening, or something that has been happening for a while?
 
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Old Oct 27, 2004 | 07:47 PM
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1997 4x4offroad 4.6 f150, w/ 172k miles bought it this summer w/ 168k, it has a clunk in the rearend, light or hard acceleration, if i decelerate for a lil ways, when i get back on the gass (light or hard) it does the same clunk, same here not worried about it, if it was a real prblm, or they were brakin alot, ud see alot more about it in here, and mine hasnt gotten any worse of 4k miles,
 
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Old Oct 27, 2004 | 08:02 PM
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Do the factory rear ends on the 150s do the rearends have a metal tag that says, synthetic oil only, i been wounderin if this is a factory rear end, and that would help
 
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Old Oct 27, 2004 | 10:53 PM
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My 97 did that also. It's a problem with the slip yoke that goes into the transmission. I pulled the drive shaft out and greased the splines on the yoke. It helped a lot. Some times I can still feel it but not near as bad as before.

Someone told me that GM makes a special lube for this problem but I have not been able to find it. I just used some grease out of the grease gun.

I thought it was the rear end at first but had it checked out and they said it was fine. Found out what was causing it by reading the forums and I think there was a TSB out on it at one time.
 
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Old Oct 27, 2004 | 11:21 PM
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Ford makes a special Teflon grease for the inside of the yoke. Your dealer probably keeps it in stock.
 
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Old Oct 27, 2004 | 11:28 PM
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lol Gee thanks Dave. I should have called Ford in the first place. lol
 
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Old Oct 27, 2004 | 11:33 PM
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Next time you'll know better
lol
 
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Old Oct 27, 2004 | 11:45 PM
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any one check their u joints yet could be one
 
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Old Oct 27, 2004 | 11:51 PM
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That was the first thing I did when I bought my truck. Replaced the U-joints thinking that was the problem.
 
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Old Oct 28, 2004 | 08:30 AM
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i have one in the back too if i back up and stop it clunks then if i go forward and stop it clunks but thats the only time any ideas i was thinking its in the drivers side brakes but i cant find anything loose
 
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