vibration in drive train chevette

[Dennis Howard]

Denora

I am finishing a Dutches td with a chevette 79 , and I get a vibration in the drive train when starting out , sometimes when speeding up also. I saw something in one of the forms about ,a drive shaft.replcement part? Any one can help me with whats wrong.

[Larry Murphy]

 Denora, Click on the search button at the top and type in Chevette drive shaft and you will see some discussion about the problem you describe.

 Do you know if the drive shaft has been balanced? Is the rear u-joint centered properly in the rear end? Are both U-joints free of tight spots[not binding] and not sloppy fitting?

Check for excessive play[looseness] at the front of the extension housing.

[Steve Crites]

Since the Chevette uses a torque tube drive the rear mount is extra sensitive to being bolted exactly centered.  If you’ve had it out and are replacing it, recheck the centering of the u-joint to the rear yoke. You may have to shift it a little, tighten, test drive, move it in or out, tighten, test drive, repeat.  If that doesn’t help, check the balance of the shaft itself. Ringo40488.7264467593

[Dan Rosa]

Denora,  welcome to our group and a great hobby your vibration could be a Ujoint more than likely,, with the newest car 22 years oldthe needle bearings can be bad they just turn to a powder or they could have dried and lock up momentarily .  that is the first place to look   second is the transmission, the rear bearing could be bad with the drive shaft out behind the seal see if you can move the spline if it moves it is the rear bearing you will need to have it replaced  and a new rear seal reinstalled   ,,the simplest is the rear transmission mount check this FIRST.  also the differential same as the rear trans bearing but not likely ,,,,,,,,,, GOOD LUCK Dan

Dan R40490.3431481481

[Dennis Howard]

Thanks to all who answered I am not a good mechanic , but I found some rubber mounts on the tube case that bolts to the frame , and one of them is ripped into.Will take a look at all these things when I get it running again, I am redoing the front body mounts and the dash board this winter.

[Dan Rosa]

  Dennis ,Gee I must be GETTING OLD I had looked at your post and never saw Crossville till today your next door…….. Dan R ..Sevierville Dan R40514.9341898148

[Dennis Howard]

Dan:

I am new at this computer stuff and get lost on how to use club web site. E- mail is Boatblue18@ yahoo.com

Dennis

[Mark Hendrickson]

Is the car a manual or automatic?

You said, “I get a vibration in the drive train when starting out”. If that means when releasing the clutch, it could be clutch chatter from a few different causes.

Does it only happen as you “start out”?

Rotted mounts cannot help either.

[Dennis Howard]

The transmission is a 180 Automatic, the vib. in when starting out fast for a quick start at intersections.

Thanks

denora

[Dan Rosa]

 Dennis, before you rebuild try Lucas transmission additive ,,it has worked for me many times, with many cars ,Advance auto and many others have it …  Dan

[edward ericson]

And, as everyone knows, Lucas stuff was original equipment in all MGs.

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