HELP! increased emissions.

6thGears · 08-24-2023, 08:13 PM

Hey forum, I got an issue I can't seem to resolve, any help is greatly appreciated.

here is a little background to get you up to speed, I recently replaced: fuel injectors, spark plugs as well as the TA. as my TA needed be replaced, as for the other two I was just doing preventative maintenance. I also remember having the ECU reverted back to stocked as I believed previous owner had a tuned but I wasn't sure.

Soon as I replaced my fuel injectors, I am now getting an SES, along with an increased emissions. I get a rough start on cold start and then the car idles at 500rpm from the usual 700-800rpm. I looked up the code I'm getting "27CE fuel rail pressure sensor A circuit range/performance". I saw few threads here talking about it, I even replaced the low fuel pressure sensor /w adapter, checked the fuel control module but my fuel readings are normal so I can assume it's not my fuel pump or filter, I'm not getting any leaks either.

recently I saw a post on some people replacing their low fuel pressure sensor with the old brass fitment and that worked for them, I just don't know where I get one from a reputable source.

any thoughts, ideas, comments are greatly appreciated.

6thGears · 08-24-2023, 08:15 PM

mind you I didn't have this problem previously.

CamasM3e93 · 08-25-2023, 05:04 AM

Did you re-zero the throttle actuator position in the cars software?

My other thought is that these are larger injectors than the ones they replaced or you have one or two faulty injectors opening inappropriately. Either could drop your fuel rail pressure.

amrazM · 08-25-2023, 07:35 AM

Quote:

Originally Posted by CamasM3e93

Did you re-zero the throttle actuator position in the cars software?

what does that even mean?

CamasM3e93 · 08-25-2023, 08:56 AM

Quote:

Originally Posted by amrazM

what does that even mean?

My memory may be incorrect on this but I recall in the maintenance suite of an obd2 platform I no longer use included functionality to reset the home or zero position of a new throttle actuator in the ecu after install, essentially a post install position callibration

6thGears · 08-25-2023, 08:13 PM

well I did replace the TA, and install the new ones at the same time. the position didn't change much as all other videos or tutorials didn't mention position.

also could it also be old fuel?, the car did set for like 5+ months while I waited for the TA's.

08-24-2023, 08:13 PM	#1
6thGears New Member 3 Rep 14 Posts Drives: BMW M3 E93 Join Date: Aug 2022 Location: San Diego, California iTrader: (0)	HELP! increased emissions. Hey forum, I got an issue I can't seem to resolve, any help is greatly appreciated. here is a little background to get you up to speed, I recently replaced: fuel injectors, spark plugs as well as the TA. as my TA needed be replaced, as for the other two I was just doing preventative maintenance. I also remember having the ECU reverted back to stocked as I believed previous owner had a tuned but I wasn't sure. Soon as I replaced my fuel injectors, I am now getting an SES, along with an increased emissions. I get a rough start on cold start and then the car idles at 500rpm from the usual 700-800rpm. I looked up the code I'm getting "27CE fuel rail pressure sensor A circuit range/performance". I saw few threads here talking about it, I even replaced the low fuel pressure sensor /w adapter, checked the fuel control module but my fuel readings are normal so I can assume it's not my fuel pump or filter, I'm not getting any leaks either. recently I saw a post on some people replacing their low fuel pressure sensor with the old brass fitment and that worked for them, I just don't know where I get one from a reputable source. any thoughts, ideas, comments are greatly appreciated.
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08-24-2023, 08:15 PM	#2
6thGears New Member 3 Rep 14 Posts Drives: BMW M3 E93 Join Date: Aug 2022 Location: San Diego, California iTrader: (0)	mind you I didn't have this problem previously.
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08-25-2023, 05:04 AM	#3
CamasM3e93 Friends don't let friends ESS 3202 Rep 881 Posts Drives: '11 Lemans Blue 6mt Harrop e90 Join Date: Dec 2020 Location: Camas, WA iTrader: (0) Garage List 2011 E90 M3 [9.00] 2003 Porsche 911 Turbo [9.75] 2019 BMW X5 xDrive40i [0.00] 2013 Mercedes E550 ... [0.00]	Did you re-zero the throttle actuator position in the cars software? My other thought is that these are larger injectors than the ones they replaced or you have one or two faulty injectors opening inappropriately. Either could drop your fuel rail pressure.
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08-25-2023, 08:13 PM	#6
6thGears New Member 3 Rep 14 Posts Drives: BMW M3 E93 Join Date: Aug 2022 Location: San Diego, California iTrader: (0)	well I did replace the TA, and install the new ones at the same time. the position didn't change much as all other videos or tutorials didn't mention position. also could it also be old fuel?, the car did set for like 5+ months while I waited for the TA's.
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