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Drivetrain slack?

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Old 06-21-2012, 06:32 PM
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Drivetrain slack?

Does anyone else have what feels like drivetrain slack? Any cure? Im tired of all the clunking.
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Old 06-21-2012, 07:02 PM
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No slack or clunking on mine. Does the clunking occur when you are going from acceleration to deceleration and vice/versa?
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Old 06-21-2012, 09:24 PM
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Yep it does.
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Old 06-21-2012, 09:33 PM
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When I put my truck in park and take my foot off the brake it seems like it rolls a good 6 inches, drives me crazy.
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Old 06-21-2012, 09:34 PM
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I have it. Had the dealer check it and they said everything was tight. Bull. I'm going to gripe and have them check again. Towed my fw this week and it would even clunk changing gears sometimes. Something is wrong.
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Old 06-21-2012, 09:38 PM
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Originally Posted by stro1965 View Post
When I put my truck in park and take my foot off the brake it seems like it rolls a good 6 inches, drives me crazy.
lol wife guided me into load up her sled at the shop last winter, guided me right up, 2inches away from the ramp. Tailgate was down, put it in park, took my foot off the brake and BAM! ...Drives me crazy too
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Old 06-21-2012, 11:01 PM
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That's why the vehicle is equipped with a parking brake ... it is to be used EVERY TIME you park the vehicle.
It's not an "Emergency Brake" ... I'm not even sure what good it is in an emergency.
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Old 06-21-2012, 11:17 PM
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Quote:
Originally Posted by screwy View Post
Does anyone else have what feels like drivetrain slack? Any cure? Im tired of all the clunking.

Not alot of things it could be -

- U-joints - Most likely
- Transmission - Not likely
- Rearend - Possible but not as likely as U-joints.
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Old 06-21-2012, 11:21 PM
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Originally Posted by Andrew010 View Post
Not alot of things it could be -

- U-joints - Most likely
- Transmission - Not likely
- Rearend - Possible but not as likely as U-joints.
this
Bad U-Joint - YouTube
10 characters
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Old 06-21-2012, 11:23 PM
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this

10 characters

Look at you, Johnny on the spot with the videos!
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Old 06-21-2012, 11:24 PM
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I was looking it up when you posted...still pretty strange to have a u-joint go so quick, but there's always a chance for a defective one.
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Old 06-21-2012, 11:27 PM
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Great minds think alike I suppose.
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Old 06-21-2012, 11:28 PM
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Great minds think alike I suppose.

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Old 06-22-2012, 06:41 AM
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Fords drivelines have notoriously clunked over the years, the splines on the slip yoke may need to be greased (regreased) with this stuff:

Motorcraft XG8 PTFE Lubricant (Amazon $7)

Procedure can be found here:
2004 F250 Slip Yoke Service
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Old 06-22-2012, 09:41 AM
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Originally Posted by TRENT310 View Post
That's why the vehicle is equipped with a parking brake ... it is to be used EVERY TIME you park the vehicle.
It's not an "Emergency Brake" ... I'm not even sure what good it is in an emergency.
The parking/emergency brake is a cable connection to the rear wheel brakes. Everything is separate from the hydraulic braking system so that if the hydraulic system fails you would still have the "emergency brakes" which would be a little better than "no brakes".
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