07 with possible transmission issue?

[builttodrive]

I recently experienced a low speed kind of pulse like applying brakes when I wasn't and I was getting a noise at this slow speed like a clunk every few feet or so that I could feel slightly in the car. 5 mph or less. The rear end was recently gone through and we ruled that out by disconnecting the driveshaft. When you rotate the driveshaft in neutral as its disconnected from the rear end it will periodically lock up or bind. Sometimes you can force it through and others you have to reverse rotation and then you can turn it free again. This experience comes and goes and isn't consistent with each rotation, sometimes you can rotate the shaft many revolutions and it will not act up.

Does anyone have any ideas what this could be? Anything with this trans prone to do that?

Thanks
Greg

 

[HillbillyHotRod]

You sure it is not the rear end? I had a PU do a similar thing where it would catch going forward but the in reverse. Turned out the ring gear spit a tooth which was causing it.

 

[HKusp]

You sure it is not the rear end? I had a PU do a similar thing where it would catch going forward but the in reverse. Turned out the ring gear spit a tooth which was causing it.

He unhooked the driveshaft from the rear end and it's still doing it.

Sounds like maybe output shaft bearing or planetary gears in the tyranny.

 

[builttodrive]

You sure it is not the rear end? I had a PU do a similar thing where it would catch going forward but the in reverse. Turned out the ring gear spit a tooth which was causing it.

Yeah we had the cover off the diff and everything looked perfect but we also disconnected the driveshaft from the axle to rule that out. The rear end wouldn't do it with the driveshaft/transmission unhooked.

 

[builttodrive]

He unhooked the driveshaft from the rear end and it's still doing it.

Sounds like maybe output shaft bearing or planetary gears in the tyranny.

I'm afraid of an expensive transmission endeavor. although we drained fluid and it was quite good and clear. I haven't changed it since I've owned it but it was a replacement transmission when I bought the car. I put about 12,000 pretty light miles on the car in 9 years.

 

[ShelbyGT5HUN]

Does pushing the clutch pedal in change anything?

 

[69b302]

I would check the front universal on the driveshaft.

 

[builttodrive]

I would check the front universal on the driveshaft.

We removed the driveshaft completely and turned the back of the transmission by hand and it is still doing it. I assume theres probably a bearing or something failing in the trans.

 

[builttodrive]

Does pushing the clutch pedal in change anything?

Seems to do it with clutch in or out and also in gear moving or in neutral.