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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 10-16-2013, 02:20 AM   #1
MikeSamteladze
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E46 M3 acts like always in sport mode

A week ago I faced a problem with my M3, suddenly it start acting like it is in sport mode.
The way I drive is DSC on, Sport Off. Normal mode. But now car became very aggressive, when I push throttle little bit, for acceleration, it immediately starts rev on 4 - 5, then comes down to 3 and begins aggressive acceleration. Before it was very smooth.
On track it was perfect, DSC off, Sport On, aggressive car, perfect acceleration. But for city mode it's very annoying an fuel consumption raised to 15 - 14 MPG, when usually it was 18 - 19.

It's Manual gearbox, no SMG. No SES lights or some error codes. Year 2003.

Any suggestions about what is going on?

Thanks.

================================ EDITED ================================

If you find out that your engine is little bit aggressive, than it should be, it revs higher when you push gas pedal and than revs coming down to normal consider your clutch as an issue.
Thanks to sakumaxp I could find out this problem.
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Old 10-16-2013, 08:25 AM   #2
DSilk56
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Take a look at the throttle position sensor. It sounds as though your issue is there, since all the "sport" button does is remap that function.
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Old 10-16-2013, 08:40 AM   #3
MikeSamteladze
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Where should I look for it? Where is this sensor?
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Old 10-16-2013, 08:46 AM   #4
DSilk56
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It's located by the front of the intake manifold.
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Old 10-16-2013, 08:57 AM   #5
MikeSamteladze
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Thanks I'll check it out
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Old 10-16-2013, 09:16 AM   #6
sogood
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There are actually three throttle position sensors on the car, one of them is your gas pedal, one on front on the intake manifold and one underneath.
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Old 10-16-2013, 11:10 AM   #7
MikeSamteladze
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Also I've changed vanos filter a month ago. I strictly followed these instruction and nothing went wrong during the procedure.
I don't think that could affect something right?
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Old 10-16-2013, 02:37 PM   #8
sakumaxp
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if it free revs, maybe its your clutch?
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Old 10-16-2013, 03:18 PM   #9
choxor
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+1 for TPS. I'd start with the one on the pedal.
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Old 10-17-2013, 12:55 PM   #10
MikeSamteladze
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I hope it's not clutch, will visit service center these days and update this topic about results.
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Old 10-19-2013, 01:41 AM   #11
MikeSamteladze
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I did inspection today.

sakumaxp
You were right. It's free revs and it is clutch. They told me that I have to replace whole clutch, only disc is not enough.

http://www.ecstuning.com/BMW-E46-M3-...lutch/ES41126/

http://www.ecstuning.com/BMW-E46-M3-...lutch/ES41127/

You can see the difference in the price, if you choose whole kit. How do you think, is it necessary to replace whole kit? If it is, I will, I just want to make sure.
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Old 10-21-2013, 06:03 PM   #12
sakumaxp
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Quote:
Originally Posted by MikeSamteladze View Post
I did inspection today.

sakumaxp
You were right. It's free revs and it is clutch. They told me that I have to replace whole clutch, only disc is not enough.

http://www.ecstuning.com/BMW-E46-M3-...lutch/ES41126/

http://www.ecstuning.com/BMW-E46-M3-...lutch/ES41127/

You can see the difference in the price, if you choose whole kit. How do you think, is it necessary to replace whole kit? If it is, I will, I just want to make sure.
if youre already going to be getting in there might as well shell out a couple more hundred and just replace it all so you wont have to worry about anything going out for a while.
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Old 10-22-2013, 02:40 AM   #13
MikeSamteladze
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I'd say that I agree this idea, I'd better have brand new clutch rather than meet the same problem after a little while.

Thank you all guys for your time.
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Old 10-22-2013, 10:38 AM   #14
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Get the entire kit and then have them inspect everything while it's out. Just to make sure. Cheaper to get in once than twice If you drive a little harder than the average bear then consider getting an upgraded heavier duty clutch kit.
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