Engine Power on Startup

330volts · 09-30-2022, 05:14 PM

2008 BMW E93 M3 with 37K miles. Got Reduced Engine Power and DSC Malfunction warning this morning when I started the car after 3 weeks. The start-up idling was rather meek and smelled of fuel. I could tell the engine power was low. After driving on the highway for 10 miles at 80mph I stopped at the gas station. The car started just fine with regular engine power and no errors.

This is the 2nd time I got the Reduced Engine Power. Thoughts on the issue? Time for spark plug change?

Reason for DSC Malfunction?

Thank you!

DrFerry · 09-30-2022, 05:24 PM

Quote:

Originally Posted by 330volts

2008 BMW E93 M3 with 37K miles. Got Reduced Engine Power and DSC Malfunction warning this morning when I started the car after 3 weeks. The start-up idling was rather meek and smelled of fuel. I could tell the engine power was low. After driving on the highway for 10 miles at 80mph I stopped at the gas station. The car started just fine with regular engine power and no errors. This is the 2nd time I got the Reduced Engine Power. Thoughts on the issue? Time for spark plug change? Reason for DSC Malfunction?

Thank you!

The Throttle Actuators are starting to fail.
https://eupartspalace.com/product/bm...ttle-actuator/

330volts · 10-01-2022, 02:34 AM

Thank you!

I scanned the codes and got P1628 from Bank #1. I guess its safe to presume the TAs are on their way out?

tlrid3r · 10-03-2022, 12:05 AM

Quote:

Originally Posted by 330volts

2008 BMW E93 M3 with 37K miles. Got Reduced Engine Power and DSC Malfunction warning this morning when I started the car after 3 weeks. The start-up idling was rather meek and smelled of fuel. I could tell the engine power was low. After driving on the highway for 10 miles at 80mph I stopped at the gas station. The car started just fine with regular engine power and no errors.

This is the 2nd time I got the Reduced Engine Power. Thoughts on the issue? Time for spark plug change?

Reason for DSC Malfunction?

Thank you!

Also check the battery. If the capacity drops too far you can have weird issue. If you can let it sit again for 2-3 days. Check Voltage if still 12.2v or higher you are fine on battery. If its in the high 11s the battery is too weak.
You can get TA code with low battery.

330volts · 10-10-2022, 07:24 PM

Update: Thanks tlrid3r for the suggestion on the battery. I put a new battery (since the old battery had reduced charge and auto zone testing deemed the battery dying) and drove it later same day. Got no engine warning or codes. Started the car after 24 hours and unfortunately got the same Reduced Engine Power and DSC Malfunction warning. I guess TA need work?

DrFerry · 10-10-2022, 07:37 PM

Quote:

Originally Posted by 330volts

Update: Thanks for the suggestion on the battery. I put a new battery (since the old battery had reduced charge and auto zone testing deemed the battery dying) and drove it later same day. Got no engine warning or codes. Started the car after 24 hours and unfortunately got the same Reduced Engine Power and DSC Malfunction warning. I guess TA need work?

The Throttle Actuators are starting to fail.
https://eupartspalace.com/product/bm...ttle-actuator/

330volts · 10-10-2022, 07:51 PM

Thank you DrFerry. I will do that next!

spammysammich · 10-10-2022, 08:02 PM

Is your battery properly coded and registered o the car with the IBS properly plugged in? Carly doesn't count. It doesn't register batteries properly.

DrFerry · 10-10-2022, 08:10 PM

Quote:

Originally Posted by 330volts

Thank you DrFerry. I will do that next!

I've experienced it myself.
.

330volts · 10-10-2022, 08:19 PM

Yep - exactly! Would you recommend rebuilding the TAs with the kit?

DrFerry · 10-10-2022, 08:49 PM

Quote:

Originally Posted by 330volts

Yep - exactly! Would you recommend rebuilding the TAs with the kit?

No. The gear kit doesn't address failing components on the motherboard such as the MOSFETS and transistors. I recommend getting rebuilt T.A.s from:

https://eupartspalace.com/product/bm...ttle-actuator/

Re-Manufactured Throttle Actuator Unit
Unlimited Miles Lifetime Warranty
Gears upgraded to superior materials made in the USA that will outlive the car
All Mosfets replaced
Transistors and capacitors tested
Voltage regulator, microprocessor, serial Eprom tested or changed

330volts · 10-10-2022, 09:16 PM

Thanks!

ETM3 · 10-11-2022, 02:36 AM

Yep same thing happened to me a few weeks ago. Got mine replaced with rebuilts from eupartspalace/M power motor sports and no problems since.

330volts · 11-06-2022, 09:38 PM

Thanks all for the directional advice - I replaced the TAs and the car is humming! Thanks to all the DIY-ers on this forum - the job took 4 hours.

Thank you Abdul at Euro Parts Palace, now Euro Power Motorsports, that I bought the rebuilt TAs from.

Longboarder · 11-07-2022, 03:46 AM

Quote:

Originally Posted by DrFerry

Quote:

Originally Posted by 330volts

2008 BMW E93 M3 with 37K miles. Got Reduced Engine Power and DSC Malfunction warning this morning when I started the car after 3 weeks. The start-up idling was rather meek and smelled of fuel. I could tell the engine power was low. After driving on the highway for 10 miles at 80mph I stopped at the gas station. The car started just fine with regular engine power and no errors. This is the 2nd time I got the Reduced Engine Power. Thoughts on the issue? Time for spark plug change? Reason for DSC Malfunction?

Thank you!

The Throttle Actuators are starting to fail.
https://eupartspalace.com/product/bm...ttle-actuator/

Nice call on this particularly with the OP only at 39k miles.

Abdul · 11-16-2022, 02:02 PM

Quote:

Originally Posted by 330volts

Thanks all for the directional advice - I replaced the TAs and the car is humming! Thanks to all the DIY-ers on this forum - the job took 4 hours.

Thank you Abdul at Euro Parts Palace, now Euro Power Motorsports, that I bought the rebuilt TAs from.

Thank you for your order! I'm glad we got you taken care of. If anyone else is in need of throttle actuators, you may place the order from our website. We have lifetime warranty on our actuators, plus we reimburse up to $200.00 in labor if you ever need to replace your throttle actuators again!

https://europowermotorsports.com/pro...tle-actuators/

Abdul · 11-16-2022, 02:14 PM

Thank you for your order!

09-30-2022, 05:14 PM	#1
330volts New Member 21 Rep 28 Posts Drives: BMW E93 M3 \| BMW E70 35i Join Date: Jul 2021 Location: NorCal iTrader: (0)	Engine Power on Startup 2008 BMW E93 M3 with 37K miles. Got Reduced Engine Power and DSC Malfunction warning this morning when I started the car after 3 weeks. The start-up idling was rather meek and smelled of fuel. I could tell the engine power was low. After driving on the highway for 10 miles at 80mph I stopped at the gas station. The car started just fine with regular engine power and no errors. This is the 2nd time I got the Reduced Engine Power. Thoughts on the issue? Time for spark plug change? Reason for DSC Malfunction? Thank you!
	Appreciate 1 DrFerry6748.00 Tweet Quote

10-01-2022, 02:34 AM	#3
330volts New Member 21 Rep 28 Posts Drives: BMW E93 M3 \| BMW E70 35i Join Date: Jul 2021 Location: NorCal iTrader: (0)	Thank you! I scanned the codes and got P1628 from Bank #1. I guess its safe to presume the TAs are on their way out? Last edited by 330volts; 10-02-2022 at 07:54 PM..
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10-10-2022, 07:24 PM	#5
330volts New Member 21 Rep 28 Posts Drives: BMW E93 M3 \| BMW E70 35i Join Date: Jul 2021 Location: NorCal iTrader: (0)	Update: Thanks tlrid3r for the suggestion on the battery. I put a new battery (since the old battery had reduced charge and auto zone testing deemed the battery dying) and drove it later same day. Got no engine warning or codes. Started the car after 24 hours and unfortunately got the same Reduced Engine Power and DSC Malfunction warning. I guess TA need work? Last edited by 330volts; 10-10-2022 at 07:59 PM..
	Appreciate 1 DrFerry6748.00 Quote

10-10-2022, 07:51 PM	#7
330volts New Member 21 Rep 28 Posts Drives: BMW E93 M3 \| BMW E70 35i Join Date: Jul 2021 Location: NorCal iTrader: (0)	Thank you DrFerry. I will do that next! Last edited by 330volts; 10-10-2022 at 07:59 PM..
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10-10-2022, 08:02 PM	#8
spammysammich Major 1815 Rep 1,250 Posts Drives: 2009 E92 M3 Dakar Yellow II Join Date: Oct 2021 Location: Edmonds, WA iTrader: (0) Garage List 2009 BMW M3 [10.00]	Is your battery properly coded and registered o the car with the IBS properly plugged in? Carly doesn't count. It doesn't register batteries properly.
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10-10-2022, 08:19 PM	#10
330volts New Member 21 Rep 28 Posts Drives: BMW E93 M3 \| BMW E70 35i Join Date: Jul 2021 Location: NorCal iTrader: (0)	Yep - exactly! Would you recommend rebuilding the TAs with the kit?
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10-10-2022, 09:16 PM	#12
330volts New Member 21 Rep 28 Posts Drives: BMW E93 M3 \| BMW E70 35i Join Date: Jul 2021 Location: NorCal iTrader: (0)	Thanks!
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10-11-2022, 02:36 AM	#13
ETM3 Private 87 Rep 78 Posts Drives: 2011 Jerez Black E90 M3 Join Date: Apr 2015 Location: Los Angeles iTrader: (0)	Yep same thing happened to me a few weeks ago. Got mine replaced with rebuilts from eupartspalace/M power motor sports and no problems since.
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11-06-2022, 09:38 PM	#14
330volts New Member 21 Rep 28 Posts Drives: BMW E93 M3 \| BMW E70 35i Join Date: Jul 2021 Location: NorCal iTrader: (0)	Thanks all for the directional advice - I replaced the TAs and the car is humming! Thanks to all the DIY-ers on this forum - the job took 4 hours. Thank you Abdul at Euro Parts Palace, now Euro Power Motorsports, that I bought the rebuilt TAs from. Last edited by 330volts; 11-16-2022 at 01:38 PM..
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11-16-2022, 02:14 PM	#17
Abdul Captain 1059 Rep 737 Posts Drives: E39 M5/E92 M3/E60 M5/F80 M3 Join Date: Jul 2016 Location: Michigan iTrader: (6)	Thank you for your order!
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