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E46 M3 (2001-2006) Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006.


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Old Thu, Jan-09-2020, 03:23:05 PM   #21
Drewster
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Default Re: Question about Syncing New Throttle Actuator

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Originally Posted by terraphantm View Post
The throttle sync procedure is a little different. The actuator will actually go beyond what the learned 100% value is. You’re then supposed to adjust the stop screw until the distance from the blade to the edge is x mm.

Not that big of a deal, but for people who want that last fractional horsepower, it might make a difference.
Hmm, maybe I need to look at what I used again, then - would hate to find out I actually put my throttle bodies further away from WOT
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Old Sun, Jan-26-2020, 07:04:50 AM   #22
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Default Re: Question about Syncing New Throttle Actuator

After checking again, I bit the bullet and dropped it off at the dealer. Will update when they let me know...


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Old Mon, Jan-27-2020, 05:42:07 PM   #23
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Default Re: Question about Syncing New Throttle Actuator

what led all of you to replacing the throttle actuator? what symptoms were you having...just limp mode or tps codes?
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Old Mon, Jan-27-2020, 08:00:31 PM   #24
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Default Re: Question about Syncing New Throttle Actuator

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what led all of you to replacing the throttle actuator? what symptoms were you having...just limp mode or tps codes?
In my case it was a misdiagnosis. Got the usual TPS codes, tried replacing both TPS with no resolution, so figured it had to be the actuator. Turned out that somehow some metal dust got into my ebox (must not have been closed properly) and some pins on my DME were shorting out. After a few blasts with compressed air, all has been good.
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Old Mon, Jan-27-2020, 08:50:40 PM   #25
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Default Re: Question about Syncing New Throttle Actuator

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Originally Posted by terraphantm View Post
In my case it was a misdiagnosis. Got the usual TPS codes, tried replacing both TPS with no resolution, so figured it had to be the actuator. Turned out that somehow some metal dust got into my ebox (must not have been closed properly) and some pins on my DME were shorting out. After a few blasts with compressed air, all has been good.


Wow. How did you ever figure that out? Pretty sure dealer tech would have done an engine swap before checking the ebox.
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Old Mon, Jan-27-2020, 09:08:42 PM   #26
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Default Re: Question about Syncing New Throttle Actuator

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Wow. How did you ever figure that out? Pretty sure dealer tech would have done an engine swap before checking the ebox.
I was planning on swapping the DME itself and then noticed the state of the ebox.
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Old Mon, Jan-27-2020, 09:18:34 PM   #27
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Default Re: Question about Syncing New Throttle Actuator

I've got a limp mode issue and I'm wondering if a new actuator will solve it. When cold starting the car after it's been sitting overnight and temperatures are below ~30 degrees the car will got into limp mode either right away or as soon as I get the car accelerating. I've replaced both TPS and swapped out the pedal for another used one. The issue still persists. It only happens when it's cold out. The past few days it's been 35-45 degrees and the car has been fine, but when it gets colder the issue is persistent. Usually I can just let the car idle in limp mode for a couple minutes and restart and the car drives fine. It's getting a bit irritating.
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Old Mon, Jan-27-2020, 11:57:38 PM   #28
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Default Re: Question about Syncing New Throttle Actuator

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I've got a limp mode issue and I'm wondering if a new actuator will solve it. When cold starting the car after it's been sitting overnight and temperatures are below ~30 degrees the car will got into limp mode either right away or as soon as I get the car accelerating. I've replaced both TPS and swapped out the pedal for another used one. The issue still persists. It only happens when it's cold out. The past few days it's been 35-45 degrees and the car has been fine, but when it gets colder the issue is persistent. Usually I can just let the car idle in limp mode for a couple minutes and restart and the car drives fine. It's getting a bit irritating.


What codes do you get when it goes into limp mode?
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Old Tue, Jan-28-2020, 12:09:17 AM   #29
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Default Re: Question about Syncing New Throttle Actuator

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What codes do you get when it goes into limp mode?
I don't have the full codes, but what I pulled up on my Schwaben/Foxwell scan tool last time I scanned it was 6B: Electric throttle: self-test and E6: DME Electric throttle: setpoint/actual value deviation.

I'll have to scan again next time it happens. It's been warmer the last few weeks so the problem hasn't happened.
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Discussing Question about Syncing New Throttle Actuator in the E46 M3 (2001-2006) Forum - Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006. at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)