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///M3 Forum
The BMW E46 ///M3 is the M version E46 and puts out an amazing 333 HP and 262 lb-ft of torque at stock specs! There are an amazing amount of modifications for both the coupe and convertible models so read up and get started modifying your cars today!

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Old 10-17-2013, 04:55 PM   #1
Ramseyd
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Join Date: Oct 2012
Location: PA
Posts: 158
My Ride: Bmw e46 M3
Loss in rev?

Hello,
I've been having a issue only happened twice so far. It's a 04 smg, and when I'm in 2ed,3rd,4th ect .... My car will suddenly drop rev down to 1k, It's all fine when my foots on the gas but as soon as I let off it will drop rev. When it happens and I hit the gas it almost like it revs up and then back to where I'm supposed to be until I let off the accelerator again. Now to stop it I've turned car off and back on and that worked, And I've already smg reset lastnight and it happened again today. What do you guys think the issue here is? Any help would be great thankyou.


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Old 10-20-2013, 10:07 PM   #2
jwon985
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Join Date: Oct 2013
Location: Markham
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My Ride: E46 M3
I'm also having this issue... It seems to go away when the car warms up, but happens everytime I first drive it out.
Basically feels like it clutches in, but still shows in gear.

I would also like any input.
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Old 10-21-2013, 11:29 AM   #3
Ramseyd
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Loss in rev?

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Originally Posted by jwon985 View Post
I'm also having this issue... It seems to go away when the car warms up, but happens everytime I first drive it out.
Basically feels like it clutches in, but still shows in gear.

I would also like any input.
Exactly, I have a spare salmon relay I may swap that today for the hell of it. Worth a shot I guess.


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Old 10-21-2013, 12:31 PM   #4
jwon985
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Originally Posted by Ramseyd View Post
Exactly, I have a spare salmon relay I may swap that today for the hell of it. Worth a shot I guess.


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Let me know how it goes. I'm going to try that too.

If that doesn't work, I might go somewhere and get the SMG adaptation done...
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Old 10-21-2013, 12:33 PM   #5
Ramseyd
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Loss in rev?

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Originally Posted by jwon985 View Post
Let me know how it goes. I'm going to try that too.

If that doesn't work, I might go somewhere and get the SMG adaptation done...
What exactly is that?


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Old 10-21-2013, 04:54 PM   #6
Alroy
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My Ride: 2003 M3 SMG CWPkg.
I too only notice it on cold starts. The engine nearly stalls.
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Old 10-24-2013, 09:27 AM   #7
jwon985
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Quote:
Originally Posted by Ramseyd View Post
What exactly is that?


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http://www.m3forum.net/m3forum/showthread.php?t=343511
its a process for the smg to relearn clutch bite points, etc...

Anyways, I fixed my problem. I was running oversize tire so I think it was throwing off the wheel speed sensors. Now running proper size.
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