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  #1  
Old 04-30-2019, 04:00 PM
erliban erliban is offline
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Mein Auto: e93 335i
Hard to shift into 1st or 3rd

I just bought a 98 Z3M Roadster, great car overall, well taken care of by previous owner (1 owner car) and only has 64k miles.

However I noticed that at a stop light, sometimes it's hard to get into 1st. When this happens I sometimes shift into 2nd and immediately shift back into 1st, that makes it easy to go in.

More annoying is when I go from 2nd to 3rd, it has a tendency to go into 5th, 3rd becomes very vague and hard to "find".

I read that this is possibly a shift pin issue. My questions to the experts here are:

1. Will it do harm to the drive train if I live with this and don't do anything?

2. Will changing to an aftermarket SS clutch line fix this?

Thanks!
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  #2  
Old 04-30-2019, 08:46 PM
Blacklane Blacklane is offline
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Mein Auto: 1998 Z3 Roadster
The usual test is: if the shifting problem still exists with the engine turned off, then the problem is shift linkage or shift pins. If the problem goes away with the engine turned off, then it's the clutch system.

The DOT 4 fluid used in the clutch and brakes becomes compressible with age as it absorbs moisture. Bleeding the clutch will probably help this problem, and it probably has not been done in 20 years. You might as well replace the clutch line along with that since it helps even more. Be sure to read-up on how to properly bleed the slave cylinder; many shops won't do it right. That should help the problem of getting into first gear.

The second-to-fifth gear problem is usually caused by shift pins, which requires removing the transmission to fix. This is the definitive procedure for addressing that: https://webspace.ringling.edu/~dplas...hift_pins.html
You can buy the special installation tools on-line especially through Thayer Motorsports.
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  #3  
Old 04-30-2019, 10:27 PM
erliban erliban is offline
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Mein Auto: e93 335i
Quote:
Originally Posted by Blacklane View Post
The usual test is: if the shifting problem still exists with the engine turned off, then the problem is shift linkage or shift pins. If the problem goes away with the engine turned off, then it's the clutch system.

The DOT 4 fluid used in the clutch and brakes becomes compressible with age as it absorbs moisture. Bleeding the clutch will probably help this problem, and it probably has not been done in 20 years. You might as well replace the clutch line along with that since it helps even more. Be sure to read-up on how to properly bleed the slave cylinder; many shops won't do it right. That should help the problem of getting into first gear.

The second-to-fifth gear problem is usually caused by shift pins, which requires removing the transmission to fix. This is the definitive procedure for addressing that: https://webspace.ringling.edu/~dplas...hift_pins.html
You can buy the special installation tools on-line especially through Thayer Motorsports.
Great information, thanks!
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  #4  
Old 05-01-2019, 06:59 AM
khammack khammack is offline
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Mein Auto: 2002 M Roadster/2014 435i
I had the same issue with the shift pins. I changed the transmission oil and while the issue didn't completely go away, it is now hardly noticeable. I plan to have the shift pins replaced when I get a new clutch at some point in the future.
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Old 05-01-2019, 07:08 AM
mzzz mzzz is offline
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Mein Auto: 98Mz3 09.135i 13.135is
Hard to shift into 1st or 3rd

I also have 98 Mz3, w/71,000 miles (original owner). I live with it because I donít drive it very often these days. The clutch/pressure plate were replaced 5 years ago.
Regarding the 2-3 shift, Iím very conscious that Iím going straight up from center so Iím going into 3rd and not 1st, especially if Iím near redline!


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Last edited by mzzz; 05-01-2019 at 01:23 PM.
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  #6  
Old 05-01-2019, 07:49 AM
erliban erliban is offline
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OK I'll refresh the fluids first and see what happens, thanks all!
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  #7  
Old 05-03-2019, 06:52 PM
01Z3MinStL 01Z3MinStL is offline
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I had the same problem on my 01 Z3M. SS clutch line and Amsoil 5w30 Syncromesh fixed it.

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