Headed to the beach this morning, the trans noises I've had since new were noticeably louder than usual. I was able to grab them on video, though they're kinda hard to hear with the other noise the camera mic was trying to filter.
The sounds are louder IRL than in the video, but being a small-element mic it has a hard time differentiating sounds.
To hear the offending sounds will probably require headphones and significant volume. I made sure to edit out any "loud" or standout sounds, so there are no impending jump-scares.
Sound 1: clacking after shifts. It's never been this loud, and only seems to be getting louder.
Sound 2: rythmic grinding when rolling to a stop. Happens in gear or out of gear, clutch in or clutch out. Sound is dependent on wheel speed, not speed of the engine (rpm). If I leave the car in gear until I am almost stopped so there's "tension" in the driveline, the sound is either very quiet or inaudible.
Clacking sound when shifting:
:14 seconds (easy to hear).
:18 seconds (harder to hear).
:22 seconds (really hard to hear).
Rythmic grinding when rolling to a stop (need headphones/volume to hear)
:32 seconds to :35 seconds.
Remedial steps taken to date:
- I have taken the car in for a grinding sound when rolling to a stop (like in the video), both front axles replaced. 24 hours later, axle seals replaced again after leaking a quart of trans fluid on my driveway overnight.
- I have taken the car in for what feels like "sloppy" engagement and excessive noise - no trouble found.
- I have replaced the RMM thinking the noise might be related. The noise is louder with the RMM, but its there either way.
- I replaced the pads as they were getting low anyways, and it was suggested the sound might be worn pads.
- I ave taken the car back in for continued grinding when rolling to a stop. I was told it's "normal", bit it sounds like metal on metal somewhere and its a not-good sound.
Additional details:
- Getting pretty shitty mileage (~20mpg around town, CA 91 summer poop gas though).
- Started getting a clunking on the drivers' side rear when going over bumps (I think it's those rubber thingies at the top of the shock, have not taken in for this yet).
- Can feel both sounds through the clutch pedal.
- Both sounds get louder when the car is hot.
- 20k miles on the car. Oil changed 400 miles ago.
- New brakepads, maybe 4k miles?
The sounds are louder IRL than in the video, but being a small-element mic it has a hard time differentiating sounds.
To hear the offending sounds will probably require headphones and significant volume. I made sure to edit out any "loud" or standout sounds, so there are no impending jump-scares.
Sound 1: clacking after shifts. It's never been this loud, and only seems to be getting louder.
Sound 2: rythmic grinding when rolling to a stop. Happens in gear or out of gear, clutch in or clutch out. Sound is dependent on wheel speed, not speed of the engine (rpm). If I leave the car in gear until I am almost stopped so there's "tension" in the driveline, the sound is either very quiet or inaudible.
Clacking sound when shifting:
:14 seconds (easy to hear).
:18 seconds (harder to hear).
:22 seconds (really hard to hear).
Rythmic grinding when rolling to a stop (need headphones/volume to hear)
:32 seconds to :35 seconds.
Remedial steps taken to date:
- I have taken the car in for a grinding sound when rolling to a stop (like in the video), both front axles replaced. 24 hours later, axle seals replaced again after leaking a quart of trans fluid on my driveway overnight.
- I have taken the car in for what feels like "sloppy" engagement and excessive noise - no trouble found.
- I have replaced the RMM thinking the noise might be related. The noise is louder with the RMM, but its there either way.
- I replaced the pads as they were getting low anyways, and it was suggested the sound might be worn pads.
- I ave taken the car back in for continued grinding when rolling to a stop. I was told it's "normal", bit it sounds like metal on metal somewhere and its a not-good sound.
Additional details:
- Getting pretty shitty mileage (~20mpg around town, CA 91 summer poop gas though).
- Started getting a clunking on the drivers' side rear when going over bumps (I think it's those rubber thingies at the top of the shock, have not taken in for this yet).
- Can feel both sounds through the clutch pedal.
- Both sounds get louder when the car is hot.
- 20k miles on the car. Oil changed 400 miles ago.
- New brakepads, maybe 4k miles?
I also run Motul DCTF and love it. I tried the Motul 300 stuff and it did not work and made shifting difficult. I don’t recommend Motul 300 as a fix for this issue. My next step is to completely rebuild the transmission looking for the root cause and install a LSD and 4.3:1 final drive while I’m in there. I hope someone can find this gremlin someday.
![[drummer]](/images/smilies/icon_smile_drummer.gif "Drummer [drummer]"){kind=icon}
