99 Mazda B4000 4x4 automatic has slack in the drive train when you first take off. Any idears what it could be? My mechanic said the drive line is ti

[Rollo60]

99 Mazda B4000 4x4 automatic with slack when you first take off. Feels like a drive line u joint? Any idears?

 

[Mbrooks420]

What do you mean by slack, the transmission slips?

 

[Rollo60]

99 Mazda B4000 4x4 automatic with slack when you first take off. Feels like a drive line u joint? Any idears?

Transmission is not slipping. It a clunk when you put it in drive and then I don't here or feel it anymore. Thanks for responding.

 

[boominXplorer]

Driveshaft slip joint

 

[RangerX]

If you have a supercab, check the driveshaft carrier bearing.

 

[Rollo60]

If you have a supercab, check the driveshaft carrier bearing.

I'll have him check it this weekend. Thanks.

 

[XploderPhil]

When I worked on these new I seem to remember several problems, just don't remember all the details
1. The 2pc driveshafts would wind up or wrap on acceleration from stop, It was a delay in movement, like a high stall torque convertor. The fix was driveshaft replacement. Can't find a TSB for this.
2. Also the slip yoke was causing a noise, click, thump, bump etc.. TSB
4-23-7

 

[Rollo60]

When I worked on these new I seem to remember several problems, just don't remember all the details
1. The 2pc driveshafts would wind up or wrap on acceleration from stop, It was a delay in movement, like a high stall torque convertor. The fix was driveshaft replacement. Can't find a TSB for this.
2. Also the slip yoke was causing a noise, click, thump, bump etc.. TSB
4-23-7
View attachment 328651View attachment 328652

Thanks for the information I appreciate you taking your time to help me. I'll pass this on to my friend/mechanic and ill report back what we find.

 

[Rick]

Thanks for the information I appreciate you taking your time to help me. I'll pass this on to my friend/mechanic and ill report back what we find.

Check the U-joints as well.

 

[Rollo60]

Check the U-joints as well.

We'll check the u joints also. Thanks.