driveline noise

[6Stang7]

If I am driving in first gear (only gear I have tried it in so far) and I left off the gas so that the car drives the motor, I will get a clunking noise from the driveline when I push the clutch in. This doesn't happen though if I push the clutch in before I let off the gas (not letting the car drive the motor). Is this normal, or a sign of a problem starting? If I am being to vauge here let me know.

 

[6Stang7]

bump

 

[70MustangGrande]

First gear only eh...

Could be the clutch isn't engaged fully in first, worn out cog in transmission, worn out driveline (easy fix with new pins) couldn't give you a gaurantee on an answer.

 

[6Stang7]

The U-joint in the rear is new and I haven't had any problem with the clutch slipping. I am just worried that I might have yet another part in my driveline fail.

 

[Ronstang]

Check to make sure your ring and pinion do not have too much backlash in them, as they wear they can cause quite a jolt upon decceleration due to all the slop. You can tighten it up a bit if necessary also if you have the right tools.

 

[6Stang7]

Ok I went out today and disconnected the driveshaft from the diff. I then grabbed the pinion and was able to turn it back and forth some without the tire moving, so I am going to ask the diff shop to decrese the amount of backslash on it. I also grabbed the driveshaft and did the same thing with the transmission in gear and had some play there too, but not as much as the diff had (about 2/3-1/2 less). Is it normal for a transmission to have some play? If it is, does anyone know about how much and a way I can check to see if it is all in spec. Same with the diff too if you know.

 

[STSFCTN67]

I had a very similar problem when I first installed my T5. After eliminating exhaust and driveshaft problems I got underneath the car with a rubber mallet and started bumping everything until I found the noise was coming from my new tranny mount. The mount was fine but for some reason when I let off the gas and was descellerating the mount wounld vibrate. I ended up placing two thick washers in between the tranny mount and the T5 swap bracket and it solved the problem.

 

[6Stang7]

Does anyone have any comments on the amount of slop I have though? Whenever I shift gears I get a sudden jurk cause there is that much slop in the driveline (unless I let the clutch out REALLY REALLY SLOW).

 

[1969mach1351]

My locker has about 1/8 turn of play in it. Lockers normally have more play than others. Didn't you try a locker not too long ago? Did you just put back in your old stuff? I know with a manual tranny you will feel the play in the rear between shifts if you had a locker. Since I have an auto I only notice mine going from park to drive. Do you have more than an 1/8 turn of play?

I'm from Livermore, just curious what shop are you having do you rear?