M6 grinding while going into 3rd and 4th gear?
Thread Starter
Pro
Joined: Jan 2006
Posts: 573
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From: Rochester NY
M6 grinding while going into 3rd and 4th gear?
I have a 2000 M6 with stock tranny around 60K miles and I just put an MGW shifter in it maybe 2000 miles ago.
I am not sure if it is a shifter issue or just a coincidence, but shortly after the shifter was installed, there would be a slight grind going from 3rd to 4th under normal acceleration.
Just today, I noticed a heavier grind when going now into 3rd gear as well
What could the problem be and what would be involved in the fix?
Thanks!
I am not sure if it is a shifter issue or just a coincidence, but shortly after the shifter was installed, there would be a slight grind going from 3rd to 4th under normal acceleration.
Just today, I noticed a heavier grind when going now into 3rd gear as well
What could the problem be and what would be involved in the fix?
Thanks!
Last edited by nikolai; Jun 24, 2009 at 02:00 PM.
Le Mans Master
Joined: Aug 2005
Posts: 5,130
Likes: 3
From: Winter Park FL
I would think if the shifter was not aligned right(to high/low) you would only get grinding in either 1-3-5 or 2-4-6 not going into 3rd and 4th.
You can always pull the dash and recheck the alignment.
You can always pull the dash and recheck the alignment.
Team Owner
Joined: Mar 2002
Posts: 24,160
Likes: 78
Swap the fluid before you do anything expensive. I had a very slight occasional grind going into 3rd which has not happened since putting in fresh fluid, and my shifting effort is also now much much less.
Now what fluid I used is a source of great controversy, but that's a different thread.
Now what fluid I used is a source of great controversy, but that's a different thread.
Le Mans Master
Joined: Feb 2002
Posts: 6,937
Likes: 21
From: Waldorf MD
Definitely swap the fluid !
Since you have a 2000 with paper blocker rings, I recommend Amsoil ATD.
Do not use Mobil 1 ATF, it caused grinding going into 6th gear for me. It was fixed immediately by changing fluid to Amsoil ATD.
Since you have a 2000 with paper blocker rings, I recommend Amsoil ATD.
Do not use Mobil 1 ATF, it caused grinding going into 6th gear for me. It was fixed immediately by changing fluid to Amsoil ATD.
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Le Mans Master
Joined: Feb 2002
Posts: 6,937
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From: Waldorf MD
There is a drain plug and fill plug. Make sure you can loosen and remove the fill plug FIRST (especially if this is your only car). Then loosen the bottom drain plug. Replace this plug. Using a cheap, plastic fluid pump, fill the transmission until fluid comes out (level to plug threads). Tighten the fill plug and your done.
Team Owner
Joined: May 2001
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From: Dear Karma, I have a list of people you missed.
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If you do some hard shifting, keep in mind the 3-4 shift fork is aluminum and a bent or damaged fork has been the culprit for some 3-4 shift issues in the past. If necessary to rebuild, I recommend considering the steel or cast-iron forks available.
I know it's a worst-case scenario I'm speaking of, but something to maybe keep in mind. Give the folks at RPM transmission a call if you want more info on 6 speed issues and solutions.
HTH
I know it's a worst-case scenario I'm speaking of, but something to maybe keep in mind. Give the folks at RPM transmission a call if you want more info on 6 speed issues and solutions.
HTH
Premium Supporting Vendor
Joined: Aug 2001
Posts: 5,364
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From: King George VA
Nikolai,
Adding to what Oldvetter said above if you've never crawled under your car before - the tranny is in the back and bolts to the differential. The drain plug is on the bottom rear passenger side corner of the tranny near where it mates to the diff, and the fill plug is on the driver's side about half way forward and halfway up the side of the tranny. You'll need something similar to this to pump the fluid up into your tranny:
AMSOIL Hand Pump
Adding to what Oldvetter said above if you've never crawled under your car before - the tranny is in the back and bolts to the differential. The drain plug is on the bottom rear passenger side corner of the tranny near where it mates to the diff, and the fill plug is on the driver's side about half way forward and halfway up the side of the tranny. You'll need something similar to this to pump the fluid up into your tranny:
AMSOIL Hand Pump
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AMSOIL Preferred Customer Program (Members buy at Wholesale - a savings of about 25%)
