Transmission Noise and driveline whine...with Video
#1
Pro
Thread Starter
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What am I going to need to replace, how bad is it to drive in this condition, what will really go bad if don't fix right away???
Here's the play by play:
13, 20 &25 seconds cycling clutch in and out.
30 seconds let clutch out and rev in neutral (sounds like a cold diesel engine knock)
45 seconds press clutch in and rev in neutral (for comparison)
56 seconds, see 30 seconds description.
1:07 seconds, engauge 1st gear with parking brake on and load up transmission
1:21 seconds, engauge reverse gear with parking brake on and load up transmission.
I recently topped up the transmission fluid so the level should be okay.
Also when driving there is the load/no load transmission whine...
http://www.youtube.com/watch?v=qSclr...ature=youtu.be
Thanks,
Here's the play by play:
13, 20 &25 seconds cycling clutch in and out.
30 seconds let clutch out and rev in neutral (sounds like a cold diesel engine knock)
45 seconds press clutch in and rev in neutral (for comparison)
56 seconds, see 30 seconds description.
1:07 seconds, engauge 1st gear with parking brake on and load up transmission
1:21 seconds, engauge reverse gear with parking brake on and load up transmission.
I recently topped up the transmission fluid so the level should be okay.
Also when driving there is the load/no load transmission whine...
http://www.youtube.com/watch?v=qSclr...ature=youtu.be
Thanks,
#4
Nordschleife Master
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
What am I going to need to replace, how bad is it to drive in this condition, what will really go bad if don't fix right away???
Here's the play by play:
13, 20 &25 seconds cycling clutch in and out.
30 seconds let clutch out and rev in neutral (sounds like a cold diesel engine knock)
45 seconds press clutch in and rev in neutral (for comparison)
56 seconds, see 30 seconds description.
1:07 seconds, engauge 1st gear with parking brake on and load up transmission
1:21 seconds, engauge reverse gear with parking brake on and load up transmission.
I recently topped up the transmission fluid so the level should be okay.
Also when driving there is the load/no load transmission whine...
http://www.youtube.com/watch?v=qSclr...ature=youtu.be
Thanks,
Here's the play by play:
13, 20 &25 seconds cycling clutch in and out.
30 seconds let clutch out and rev in neutral (sounds like a cold diesel engine knock)
45 seconds press clutch in and rev in neutral (for comparison)
56 seconds, see 30 seconds description.
1:07 seconds, engauge 1st gear with parking brake on and load up transmission
1:21 seconds, engauge reverse gear with parking brake on and load up transmission.
I recently topped up the transmission fluid so the level should be okay.
Also when driving there is the load/no load transmission whine...
http://www.youtube.com/watch?v=qSclr...ature=youtu.be
Thanks,
Topped up trans fluid? to what level?
it SHOULD be 6-8mm below the bottom of the fill port... not even with the bottom of the fill port, and what fluid are you using? I notice a distinct difference when running fresh Swepco 201 compared to any other fluid...
#6
Nordschleife Master
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Where are you located? I have a galon and a half of Swepco sitting in the garage... if youre close enough fill er up and if you like it, pay for the fluid you use!
#7
Instructor
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Definitely sounds like the torque tube bearings to me. Mine sounded exactly the same and I got it rebuilt and now it's fine. I shortly replaced transmission after to LSD cause reverse gear was shot in my other transmission.
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#8
Pro
Thread Starter
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How long can I drive it with this condition? I will redo the TT bearings soon but will I hurt anything else in the mean time?
#11
Pro
Thread Starter
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No i never figured it out. still driving it like this.
i'll add some more here, when driving the driveline noise is like this, pressing and letting off the accelerator you hear a machining sound, and it pulsates with the "bouncing" or surging of the car when the accelerator is closed. When clutch is depressed sound is gone. when car is in neutral sound is gone. worse in lower gears. Think I might change transmission fluid...
i'll add some more here, when driving the driveline noise is like this, pressing and letting off the accelerator you hear a machining sound, and it pulsates with the "bouncing" or surging of the car when the accelerator is closed. When clutch is depressed sound is gone. when car is in neutral sound is gone. worse in lower gears. Think I might change transmission fluid...
#12
Instructor
Join Date: Jan 2014
Location: Near Atlanta GA
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I have 5 951s, one with a 968 transmission and an S2, 3 with fresh built transmissions, and they ALL make this noise! I think the only other bearings are in the TT, but I can't understand why they would make that sound...
#13
Pro
Thread Starter
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That's what i was thinking. 951 owners are a rare breed, those with multiple cars even more so. i've tracked it in this condition to no detriment. Guess I'll keep driving, hell i only put 3-4k on it a year... when/if it ever becomes a problem I'll have it towed home and fix it... thanks Jon.
#14
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That's what i was thinking. 951 owners are a rare breed, those with multiple cars even more so. i've tracked it in this condition to no detriment. Guess I'll keep driving, hell i only put 3-4k on it a year... when/if it ever becomes a problem I'll have it towed home and fix it... thanks Jon.