Drive train Slack - PowerStrokeNation : Ford Powerstroke Diesel Forum
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post #1 of 11 (permalink) Old 11-02-2009, 03:02 PM Thread Starter
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Angry Drive train Slack

Well i have a late 99 7.3 4x4 with the zf6 and it seems like there is alot of play in the drive train, i dont know weather it is in the transfer case or where, but it annoys me because it makes it a rough ride when you let off the fuel pedal and then give it some fuel, anyone have any ideas or suggestions?
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post #2 of 11 (permalink) Old 11-02-2009, 03:18 PM
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Re: Drive train Slack

I've had this before. Happens sometime but not all the times. I'm not sure if it's the drive line, rear end, trans, transfer case ect..

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post #3 of 11 (permalink) Old 11-02-2009, 06:08 PM Thread Starter
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Re: Drive train Slack

well i need to know where to start because its bugging the hell out of me
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post #4 of 11 (permalink) Old 11-02-2009, 06:26 PM
 
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Re: Drive train Slack

Grease the splines on the rear drive shaft and see if it goes away before you go on a wild goose chase.
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post #5 of 11 (permalink) Old 11-02-2009, 08:23 PM
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Re: Drive train Slack

Quote:
Originally Posted by Blue Water Runner View Post
Grease the splines on the rear drive shaft and see if it goes away before you go on a wild goose chase.
I did this over the weekend and it seemed to help a little.

8" Lift
38" Toyo MT's
DIY Traction Bars
Zoodad-AIH Delete-Foil Delete
Adjust. Wastegate
ISSIPRO Performax Gauges
4" TB Magnaflow Exhaust w/ 5" tip
AFE stage 2 PG 7 W/Pre-Filter
Superchips Prgmr 150HP/225TQ
Oil X-over Line
Smoked Lights w/LEDs & HIDs
DIY 3 stage Water/Meth
CCV
6.0 IC
Transgo Shift Kit
Derale Trans. Frame Rail Cooler
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post #6 of 11 (permalink) Old 11-02-2009, 09:10 PM
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Re: Drive train Slack

i would also check the rear axle to hub bolts . I had that problem.

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post #7 of 11 (permalink) Old 11-03-2009, 01:24 PM
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Re: Drive train Slack

Good thinking DIRTBIKEZ

8" Lift
38" Toyo MT's
DIY Traction Bars
Zoodad-AIH Delete-Foil Delete
Adjust. Wastegate
ISSIPRO Performax Gauges
4" TB Magnaflow Exhaust w/ 5" tip
AFE stage 2 PG 7 W/Pre-Filter
Superchips Prgmr 150HP/225TQ
Oil X-over Line
Smoked Lights w/LEDs & HIDs
DIY 3 stage Water/Meth
CCV
6.0 IC
Transgo Shift Kit
Derale Trans. Frame Rail Cooler
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post #8 of 11 (permalink) Old 11-04-2009, 01:28 AM Thread Starter
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Re: Drive train Slack

could the driveshaft support bearing do this also?
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post #9 of 11 (permalink) Old 11-04-2009, 01:56 AM
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Re: Drive train Slack

my truck has tons of driveline slack,i just live with it.it can be from excessive gearlash in the rear diff.try to turn the driveshaft w the truck parked in nuetral to find rear diff slack. then try to turn it with the truck off the ground in gear,that will tell yuo if its rear diff or transfer case/transmission.


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post #10 of 11 (permalink) Old 02-05-2010, 12:42 AM
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Re: Drive train Slack

I just saw this old thread. My truck has excessive slack in the drive-line when I get on and off the gas pedal, and when I'm in OD and the TCC is locked you can really hear and feel it when you get on and off the gas. It's a very distinctive "clunk".

I took the rear driveshaft off the truck and test drove it to see if I could confirm that it was indeed a driveshaft/ rear end problem, but the clunk/ slack is still there exactly as it was before with the driveshaft in.

I think I've narrowed it down to the transfer case, because I highly doubt its a transmission problem.

What do you guys think?

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