Rev By Itself Then Power loss

fbo.jawn · 06-26-2023, 02:35 AM

hey guys ive been dealing with this issue on my 2011 328i E90, where the car when anytime it is brung down to idle for more than 5 sec it will rev to about 2k rpm then almost die, then when i go to drive it it has bad power loss. Fuel pump module? sensors? not really sure

only started doing this after i did my tune and oil change (E85 with Pop tune) any help would be appreciated

PhaceN52 · 06-28-2023, 08:10 AM

Any codes?

fbo.jawn · 06-28-2023, 07:53 PM

Intake and Exhaust timing over retarded

PhaceN52 · 06-29-2023, 03:51 AM

Try first the obvious things with the vanos system, clean/swap solenoids, clean check valves and see if they are operational or stuck, maybe cam sensors... No fuel trim codes?

Jros · 07-06-2023, 12:18 PM

being both intake and exhaust i would suspect low oil pressure, unless both solenoids and/or actuators are shot

rjahl · 07-06-2023, 04:13 PM

If the problem started right after the engine tune, why not start there. Have you checked with your tuner?

Jros · 07-09-2023, 05:22 AM

Quote:

Originally Posted by rjahl

If the problem started right after the engine tune, why not start there. Have you checked with your tuner?

my bad, i didn't realize it was tuned, you are very right

chilledn52 · 07-09-2023, 06:38 PM

If not problem with engine tune, check oil filter. make sure the inside housing is clicked in and orings are seated properly, not crimped. The small green oring can cause low oil pressure

fbo.jawn · 07-15-2023, 10:10 AM

Quote:

Originally Posted by rjahl

If the problem started right after the engine tune, why not start there. Have you checked with your tuner?

Just retuned my car for the s65 injectors and still having the same issue, everyone is saying low oil pressure but i only have 151k miles. surely my cylinder walls arent wearing too bad?

fbo.jawn · 07-15-2023, 10:12 AM

Quote:

Originally Posted by PhaceN52

Try first the obvious things with the vanos system, clean/swap solenoids, clean check valves and see if they are operational or stuck, maybe cam sensors... No fuel trim codes?

i have not gotten any fuel trim codes as of writing this, but i did retune my car for the s65 injectors and it is still having the issue. i also have swapped vanos sylenoids with a parts car and i am still having the issue as well. i am thinking oil pressure or possibly a timing issue or possible disa valve problem

rjahl · 07-15-2023, 10:18 AM

I’f the problem came up right after changing something like injectors and tune, I’d start looking there.

If you want to keep digging elsewhere. Use INPA to monitors vanos positions against target values, oil pressure and fuel mixtures. It’s all there in the N52 diagnostics.

INPA is free to download and it’s not that hard to use.

06-26-2023, 02:35 AM	#1
fbo.jawn New Member 2 Rep 6 Posts Drives: BMW 550i Join Date: Mar 2023 Location: Springfield, MO iTrader: (0) Garage List 2011 BMW 328i [8.00]	Rev By Itself Then Power loss hey guys ive been dealing with this issue on my 2011 328i E90, where the car when anytime it is brung down to idle for more than 5 sec it will rev to about 2k rpm then almost die, then when i go to drive it it has bad power loss. Fuel pump module? sensors? not really sure only started doing this after i did my tune and oil change (E85 with Pop tune) any help would be appreciated
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06-28-2023, 08:10 AM	#2
PhaceN52 Private First Class 178 Rep 196 Posts Drives: '06 E90 N52B30 US spec Join Date: Mar 2016 Location: Italy, Dolomites iTrader: (0)	Any codes?
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06-28-2023, 07:53 PM	#3
fbo.jawn New Member 2 Rep 6 Posts Drives: BMW 550i Join Date: Mar 2023 Location: Springfield, MO iTrader: (0) Garage List 2011 BMW 328i [8.00]	Intake and Exhaust timing over retarded
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06-29-2023, 03:51 AM	#4
PhaceN52 Private First Class 178 Rep 196 Posts Drives: '06 E90 N52B30 US spec Join Date: Mar 2016 Location: Italy, Dolomites iTrader: (0)	Try first the obvious things with the vanos system, clean/swap solenoids, clean check valves and see if they are operational or stuck, maybe cam sensors... No fuel trim codes?
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07-06-2023, 12:18 PM	#5
Jros Private 57 Rep 92 Posts Drives: EUDM E92 325i 2006 Join Date: Feb 2022 Location: Italy iTrader: (0)	being both intake and exhaust i would suspect low oil pressure, unless both solenoids and/or actuators are shot
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07-06-2023, 04:13 PM	#6
rjahl Colonel 1002 Rep 2,287 Posts Drives: Z4 35is Join Date: Jun 2011 Location: Tampa iTrader: (0) Garage List 2012 Z4 35is [0.00]	If the problem started right after the engine tune, why not start there. Have you checked with your tuner?
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07-09-2023, 06:38 PM	#8
chilledn52 Parts Pro 144 Rep 176 Posts Drives: 2007 BMW 328xi 6MT Join Date: Sep 2022 Location: Alberta iTrader: (0) Garage List 2007 BMW 328xi [10.00]	If not problem with engine tune, check oil filter. make sure the inside housing is clicked in and orings are seated properly, not crimped. The small green oring can cause low oil pressure __________________ E90 328xi 6MT \| Intake Scoops \| K&N + Charcoal Filter Delete \| DIY Dinan 3in \| 3.25in + 3.5in piping \| N54 Manifold \| MILVS \| Ceramic Coated Headers \| Secondary Cat Delete \| Xdelete \| 3.91 Diffs \| 22RPD Tune
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07-15-2023, 10:18 AM	#11
rjahl Colonel 1002 Rep 2,287 Posts Drives: Z4 35is Join Date: Jun 2011 Location: Tampa iTrader: (0) Garage List 2012 Z4 35is [0.00]	I’f the problem came up right after changing something like injectors and tune, I’d start looking there. If you want to keep digging elsewhere. Use INPA to monitors vanos positions against target values, oil pressure and fuel mixtures. It’s all there in the N52 diagnostics. INPA is free to download and it’s not that hard to use.
	Appreciate 0 Quote