E92 M3 Strange Cold Start Issue (No Codes)

svinfinity · 05-30-2018, 11:01 PM

Having a very strange issue when starting up the car ONLY when cold. Car cranks for a while and struggles to start. After starting once, car starts perfectly for the rest of the day. This all started happening when i replaced bank 2 throttle actuator with a rebuilt one. Please watch the video as is it hard to describe the startup. I'm full catless with tune and cold start delete.

So Far, I've replaced with a brand new AGM charged battery and registered. I will check to see if there is any parasitic draw, but it seems like voltages are fine. My start button turns off after 3 minutes.

I've also replaced pre-cat O2 Sensors and rechecked all hoses/plenum.

Spark Plugs were done less than 5k miles ago. I have a low pressure fuel sensor in the mail. I've checked both throttle actuator voltage and ICV voltage and all are within spec. Any thoughts? It's strange because it happens only when the car sits overnight. I can start the car again right after the first start and it's perfect.

renaissance · 05-31-2018, 04:24 AM

Quote:

Originally Posted by svinfinity

Spark Plugs were done less than 5k miles ago. I have a low pressure fuel sensor in the mail. I've checked both throttle actuator voltage and ICV voltage and all are within spec. Any thoughts? It's strange because it happens only when the car sits overnight. I can start the car again right after the first start and it's perfect.

Maybe you can try by changing the way you start your car. I used to have Cold Start issue (misfire all cylinders) even after I have new ignition coils and spark plugs installed. (http://www.m3post.com/forums/showthread.php?t=1472069)

However, I solved the issue by waiting for couple of minutes before I start my car. No more misfire. You can compare both clips.

Before

After

svinfinity · 05-31-2018, 05:50 AM

I could. But, i never had issues before.

svinfinity · 05-31-2018, 11:04 PM

I started it today by leaving the car ignition on for a few minutes and making sure battery voltage is good. Same issue, and it even started in limp mode. I turn the car off and back on and starts right up perfectly with nothing. Only codes stored are

2b29 - manager monitoring moment
2b57 - engine emergency program activated

renaissance · 06-01-2018, 09:10 AM

Quote:

Originally Posted by svinfinity

I started it today by leaving the car ignition on for a few minutes and making sure battery voltage is good. Same issue, and it even started in limp mode. I turn the car off and back on and starts right up perfectly with nothing. Only codes stored are

2b29 - manager monitoring moment
2b57 - engine emergency program activated

Do you get the error code description from ISTA-D? I used to check error codes in INPA but if I want to know the description of those codes, I will use ISTA-D.

decimation1 · 06-01-2018, 12:00 PM

Quote:

Originally Posted by renaissance

Do you get the error code description from ISTA-D? I used to check error codes in INPA but if I want to know the description of those codes, I will use ISTA-D.

This ^^ ISTA is the go to for sure.

svinfinity · 06-01-2018, 03:01 PM

Quote:

Originally Posted by renaissance

Do you get the error code description from ISTA-D? I used to check error codes in INPA but if I want to know the description of those codes, I will use ISTA-D.

I used carly. It turns out the code is thrown alongside with limp mode so it doesn’t help me.

yidgyi · 06-01-2018, 06:55 PM

This happens to me if I leave my car in the garage for a day. After initial start of the day it doesn't hesitate to start for the rest of that day. I don't have any codes or ever put into limp mode. Would love to know if its your low pressure fuel sensor that fixed it. Thanks.

svinfinity · 06-01-2018, 08:09 PM

Quote:

Originally Posted by yidgyi

This happens to me if I leave my car in the garage for a day. After initial start of the day it doesn't hesitate to start for the rest of that day. I don't have any codes or ever put into limp mode. Would love to know if its your low pressure fuel sensor that fixed it. Thanks.

Are you tuned?

yidgyi · 06-02-2018, 01:13 AM

Quote:

Originally Posted by svinfinity

Are you tuned?

Yup. I doubt it has anything to do with the tune though. I switch between multiple tunes a lot. I just haven't cared enough to look into it since it's not throwing codes. If the new low pressure fuel sensor fixes your issue I'll go that route too.

svinfinity · 06-03-2018, 06:38 PM

Car is finally throwing a code. 27CE - Fuel pressure
I've changed the sensor but code is still showing. Next step is to change EKP Fuel Pump Module.

E92_Toronto · 06-07-2018, 09:56 AM

Hope it gets solved

skiv23 · 07-18-2018, 01:42 PM

Quote:

Originally Posted by svinfinity

I started it today by leaving the car ignition on for a few minutes and making sure battery voltage is good. Same issue, and it even started in limp mode. I turn the car off and back on and starts right up perfectly with nothing. Only codes stored are

2b29 - manager monitoring moment
2b57 - engine emergency program activated

Having the same issue, but keeping ignition on helped. Hopefully the pump.

svinfinity · 07-18-2018, 01:43 PM

Quote:

Originally Posted by skiv23

Having the same issue, but keeping ignition on helped. Hopefully the pump.

I have a spare pump for sale if you want to try. I also have the regulator on the driver side as well.

skiv23 · 07-18-2018, 02:07 PM

Quote:

Originally Posted by svinfinity

I have a spare pump for sale if you want to try. I also have the regulator on the driver side as well.

Cheers man, but the shipping will cost a fortune

Have you replaced your idle valve already?

svinfinity · 07-18-2018, 02:13 PM

Quote:

Originally Posted by skiv23

Cheers man, but the shipping will cost a fortune

Have you replaced your idle valve already?

Where are you located? The units are fairly small. I ended up replacing my bank 2 actuator, idle control valve, and the fuel breather valve all at once. Problem seems to be mostly gone.

skiv23 · 09-26-2018, 10:04 AM

In my case changing fuel filter solved the issue.

CG_Apparel · 06-25-2019, 11:01 AM

Quote:

Originally Posted by yidgyi

This happens to me if I leave my car in the garage for a day. After initial start of the day it doesn't hesitate to start for the rest of that day. I don't have any codes or ever put into limp mode. Would love to know if its your low pressure fuel sensor that fixed it. Thanks.

Hi. Did you ever find a fix to this problem. I’m having the same issue. No fault codes at all. If I leave my car over night it won’t start for a while. Then once it starts it will start with no issues for the rest of the day.

Oreo Cat · 07-14-2022, 11:22 AM

Did fuel pump end up fixing? Mine is doing this

05-30-2018, 11:01 PM	#1
svinfinity First Lieutenant 57 Rep 383 Posts Drives: E92 JEREZ M3 Join Date: Mar 2015 Location: Fort lee nj iTrader: (0)	E92 M3 Strange Cold Start Issue (No Codes) Having a very strange issue when starting up the car ONLY when cold. Car cranks for a while and struggles to start. After starting once, car starts perfectly for the rest of the day. This all started happening when i replaced bank 2 throttle actuator with a rebuilt one. Please watch the video as is it hard to describe the startup. I'm full catless with tune and cold start delete. So Far, I've replaced with a brand new AGM charged battery and registered. I will check to see if there is any parasitic draw, but it seems like voltages are fine. My start button turns off after 3 minutes. I've also replaced pre-cat O2 Sensors and rechecked all hoses/plenum. Spark Plugs were done less than 5k miles ago. I have a low pressure fuel sensor in the mail. I've checked both throttle actuator voltage and ICV voltage and all are within spec. Any thoughts? It's strange because it happens only when the car sits overnight. I can start the car again right after the first start and it's perfect.
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05-31-2018, 05:50 AM	#3
svinfinity First Lieutenant 57 Rep 383 Posts Drives: E92 JEREZ M3 Join Date: Mar 2015 Location: Fort lee nj iTrader: (0)	I could. But, i never had issues before.
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05-31-2018, 11:04 PM	#4
svinfinity First Lieutenant 57 Rep 383 Posts Drives: E92 JEREZ M3 Join Date: Mar 2015 Location: Fort lee nj iTrader: (0)	I started it today by leaving the car ignition on for a few minutes and making sure battery voltage is good. Same issue, and it even started in limp mode. I turn the car off and back on and starts right up perfectly with nothing. Only codes stored are 2b29 - manager monitoring moment 2b57 - engine emergency program activated
	Appreciate 0 Quote

06-01-2018, 06:55 PM	#8
yidgyi ///M 236 Rep 703 Posts Drives: 2013 E92 M3 ZCP Join Date: Oct 2015 Location: Northern VA iTrader: (0)	This happens to me if I leave my car in the garage for a day. After initial start of the day it doesn't hesitate to start for the rest of that day. I don't have any codes or ever put into limp mode. Would love to know if its your low pressure fuel sensor that fixed it. Thanks. __________________ Follow me on IG: dre.pt
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06-03-2018, 06:38 PM	#11
svinfinity First Lieutenant 57 Rep 383 Posts Drives: E92 JEREZ M3 Join Date: Mar 2015 Location: Fort lee nj iTrader: (0)	Car is finally throwing a code. 27CE - Fuel pressure I've changed the sensor but code is still showing. Next step is to change EKP Fuel Pump Module.
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06-07-2018, 09:56 AM	#12
E92_Toronto Private First Class 52 Rep 167 Posts Drives: E92 M3 Join Date: Oct 2014 Location: Toronto iTrader: (0)	Hope it gets solved
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09-26-2018, 10:04 AM	#17
skiv23 New Member 7 Rep 20 Posts Drives: m3 e92 Join Date: Sep 2016 Location: Europe iTrader: (0)	In my case changing fuel filter solved the issue.
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07-14-2022, 11:22 AM	#19
Oreo Cat Second Lieutenant 127 Rep 244 Posts Drives: E90 M3 Join Date: May 2017 Location: Reno iTrader: (1)	Did fuel pump end up fixing? Mine is doing this
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