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Old 04-18-2017, 07:59 PM   #1
nikos07
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2005 330ci acceleration lagging

I'll try to explain this situation as detailed as possible given the fact that there could be many causes; my "Service Engine Soon" light turned on and my car was showing a misfire in cylinders 1 and 5 as well as feeling shaky when idle. I changed all the spark plugs and coils and the car seemed to be running smooth and without the "service engine soon" light on anymore. However, when I started driving I noticed the car felt as if it had less power, especially when pressing on the throttle a little harder to pass someone/accelerate etc., as if the throttle was lagging and the engine was having trouble. I also noticed a faint shaky feeling again when idle. The car has Dinan Stage 1 engine software as well as their automatic transmission software and I definitely notice a difference in performance from before I had the misfires and after I changed the spark plugs and coils. I'm not sure what else could be the problem, if there is one, even though there is no sign of engine problems from the dashboard perspective.
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Old 04-18-2017, 09:01 PM   #2
jfoj
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If you have a smart phone or table, get an OBDII App and interface so you can read the codes along with Live/Realtime or Freeze Frame data then you will know exactly what is going on with the engine fuel management system.

The OBDFusion App and proper VeePeak interface from Amazon are less than $30 for both for iProducts, less than $20 for both for Android

OBDFusion for Android is is $3.99.

https://www.amazon.com/Veepeak-Bluet...peak+bluetooth

OBDFusion, for the iProducts it is $9.99.

For iProducts you NEED a Wifi adapter or LE Bluetooth adapter which are more expensive and VeePeak does not offer these yet..

iProducts requires Wifi - https://www.amazon.com/dp/B00WPW6BAE...ywords=veepeak

You also did not say how many miles are on the car at this point and if the lack of power is below 3000 RPM.
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Solve your misfires, lean codes, rough idle - http://forum.e46fanatics.com/showthread.php?t=897616

Fuel pump failures - http://forum.e46fanatics.com/showthread.php?t=929501

Temp Info - http://forum.e46fanatics.com/showthread.php?t=964491

Hidden OBC Menu - Check Voltage, Temp, Fuel Level - http://forum.e46fanatics.com/showthread.php?t=239619

E46/E39 GM5 Door Lock Info - www.bmwgm5.com

Lower hose temp switch O-ring - BMW #13621743299
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Old 04-19-2017, 06:05 AM   #3
nikos07
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[QUOTE

You also did not say how many miles are on the car at this point and if the lack of power is below 3000 RPM.[/QUOTE]


The car has 108,000 miles and yes the lack of power is below 3000 RPM.
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Old 04-19-2017, 07:15 AM   #4
markusmarkus
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Quote:
Originally Posted by nikos07 View Post
[QUOTE



You also did not say how many miles are on the car at this point and if the lack of power is below 3000 RPM.




The car has 108,000 miles and yes the lack of power is below 3000 RPM.[/QUOTE]



Has the VANOS been rebuilt?
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Old 04-19-2017, 07:25 AM   #5
nikos07
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Originally Posted by markusmarkus View Post
The car has 108,000 miles and yes the lack of power is below 3000 RPM.


Has the VANOS been rebuilt?[/QUOTE]

No i have not done anything to the VANOS
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Old 04-19-2017, 09:50 AM   #6
jfoj
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Forget the VANOS for now.

You need to look at the basics and it appears based on your explanation this problem may have come on pretty quickly.

I would be removing and inspecting the DISA, it likely needs to be rebuilt or replaced at this point.

I would strongly consider a fuel pump and filter replacement.

Then there is the age old problem of the poor BMW DME timing Maps that cause a loss of power up to 3000 RPM. You might say that you have DINAN DME tune, but this does not matter. Garbage In = Garbage Out. A DINAN tune extracts the stock DME program, tweaks it a bit and then it is reflashed into the DME. If you start with a crap DME tune, then tweak it, you end up with a Crap tweaked DME tune.

Time for you to get the OBDFusion App and start investigating things like fuel trims and ignition timing behavior.

Suggest you consider PM a number of parts on the engine at this point, everything the O2 sensors, DISA, CCV and hoses, Intake boots, Fuel pump and filter.

Suggest you read these threads:

Solve your misfires, lean codes, rough idle - http://forum.e46fanatics.com/showthread.php?t=897616

Fuel pump failures - http://forum.e46fanatics.com/showthread.php?t=929501

Timing problem - forum.e46fanatics.com/showthread.php?t=966614
__________________
Solve your misfires, lean codes, rough idle - http://forum.e46fanatics.com/showthread.php?t=897616

Fuel pump failures - http://forum.e46fanatics.com/showthread.php?t=929501

Temp Info - http://forum.e46fanatics.com/showthread.php?t=964491

Hidden OBC Menu - Check Voltage, Temp, Fuel Level - http://forum.e46fanatics.com/showthread.php?t=239619

E46/E39 GM5 Door Lock Info - www.bmwgm5.com

Lower hose temp switch O-ring - BMW #13621743299
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Old 04-19-2017, 11:19 AM   #7
nikos07
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Originally Posted by jfoj View Post
Forget the VANOS for now.

You need to look at the basics and it appears based on your explanation this problem may have come on pretty quickly.

I would be removing and inspecting the DISA, it likely needs to be rebuilt or replaced at this point.

I would strongly consider a fuel pump and filter replacement.

Then there is the age old problem of the poor BMW DME timing Maps that cause a loss of power up to 3000 RPM. You might say that you have DINAN DME tune, but this does not matter. Garbage In = Garbage Out. A DINAN tune extracts the stock DME program, tweaks it a bit and then it is reflashed into the DME. If you start with a crap DME tune, then tweak it, you end up with a Crap tweaked DME tune.

Time for you to get the OBDFusion App and start investigating things like fuel trims and ignition timing behavior.

Suggest you consider PM a number of parts on the engine at this point, everything the O2 sensors, DISA, CCV and hoses, Intake boots, Fuel pump and filter.

Suggest you read these threads:

Solve your misfires, lean codes, rough idle - http://forum.e46fanatics.com/showthread.php?t=897616

Fuel pump failures - http://forum.e46fanatics.com/showthread.php?t=929501

Timing problem - forum.e46fanatics.com/showthread.php?t=966614
Could cleaning the mass air flow sensor potentially solve this problem?
I have ordered a new fuel filter and will be replacing it soon.

Last edited by nikos07; 04-19-2017 at 11:20 AM.
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Old 04-19-2017, 11:41 AM   #8
jfoj
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No, and the fuel filter replacement will not solve the problem either.
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Solve your misfires, lean codes, rough idle - http://forum.e46fanatics.com/showthread.php?t=897616

Fuel pump failures - http://forum.e46fanatics.com/showthread.php?t=929501

Temp Info - http://forum.e46fanatics.com/showthread.php?t=964491

Hidden OBC Menu - Check Voltage, Temp, Fuel Level - http://forum.e46fanatics.com/showthread.php?t=239619

E46/E39 GM5 Door Lock Info - www.bmwgm5.com

Lower hose temp switch O-ring - BMW #13621743299
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Old 04-20-2017, 05:44 PM   #9
coqui_pr
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nikos07 is asking a different question: Could cleaning the MAF sensor would help solve the problem?

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Old 04-20-2017, 06:25 PM   #10
jfoj
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Quote:
Originally Posted by coqui_pr View Post
nikos07 is asking a different question: Could cleaning the MAF sensor would help solve the problem?

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I answered his question, the answer is and was - NO.

Nikos7 is screwing around and not listening, his car has more of a problem than he is willing to admit.

The fuel filter replacement will not help either. I have never seen a single E46 with a fuel filter so bad it causes driveability problems, the fuel filter is HUGE and while it should be replaced, I can guarantee it will not help or solve the current problem.

The fuel pump or other items I outlined will be more of a likely source of lost performance and driveability problems. This assumes there is not a major problem like clogged catalytic converters or a burned exhaust valve.

But when you ask a question and do not listen, not much I can do to help beyond that!
__________________
Solve your misfires, lean codes, rough idle - http://forum.e46fanatics.com/showthread.php?t=897616

Fuel pump failures - http://forum.e46fanatics.com/showthread.php?t=929501

Temp Info - http://forum.e46fanatics.com/showthread.php?t=964491

Hidden OBC Menu - Check Voltage, Temp, Fuel Level - http://forum.e46fanatics.com/showthread.php?t=239619

E46/E39 GM5 Door Lock Info - www.bmwgm5.com

Lower hose temp switch O-ring - BMW #13621743299

Last edited by jfoj; 04-20-2017 at 06:26 PM.
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Old 04-20-2017, 06:36 PM   #11
Darios e46
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I've had a fuel filter give drivability issues on my car but that's because its pressure regulator got a hole in the membrane somehow so it flooded my intake but that is not common at all I agree with jfoj he needs to start with the basics and listen because jfoj is one of the best drivability guys on this forum


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Old 04-21-2017, 11:46 AM   #12
coqui_pr
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Quote:
Originally Posted by jfoj View Post
I answered his question, the answer is and was - NO.

Nikos7 is screwing around and not listening, his car has more of a problem than he is willing to admit.

The fuel filter replacement will not help either. I have never seen a single E46 with a fuel filter so bad it causes driveability problems, the fuel filter is HUGE and while it should be replaced, I can guarantee it will not help or solve the current problem.

The fuel pump or other items I outlined will be more of a likely source of lost performance and driveability problems. This assumes there is not a major problem like clogged catalytic converters or a burned exhaust valve.

But when you ask a question and do not listen, not much I can do to help beyond that!
I agree, people have to listen. When I come across to your post I always learn and believe your logic is sound. It takes time to read them but you are thorough. I am about to post my problem, that is why I have read so much, but there is always something different that makes you wonder.

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Old 04-21-2017, 12:43 PM   #13
nikos07
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Quote:
Originally Posted by jfoj View Post
I answered his question, the answer is and was - NO.

Nikos7 is screwing around and not listening, his car has more of a problem than he is willing to admit.

The fuel filter replacement will not help either. I have never seen a single E46 with a fuel filter so bad it causes driveability problems, the fuel filter is HUGE and while it should be replaced, I can guarantee it will not help or solve the current problem.

The fuel pump or other items I outlined will be more of a likely source of lost performance and driveability problems. This assumes there is not a major problem like clogged catalytic converters or a burned exhaust valve.

But when you ask a question and do not listen, not much I can do to help beyond that!
I am not not screwing around nor am I in denial that my car could have more of a problem- that's why I created this thread. However, I had already been planning on changing the fuel filter as it has never been replaced before and have heard that the performance could be hindered if the MAF sensor is not properly cleaned, which is why I asked for your input on both matters. I am planning on examining the DISA and intake boots this weekend and unfortunately, although I have an OBD, I am not very experienced with the functionalities of live data nor how to analyze/monitor the output data, so I have to research and familiarize myself with it first.

The CCV and hoses have been replaced and have only been driven less than 10,000 miles since then. O2 sensors and fuel pump are on my list to replace next as well. I get that the car is older and these items need to be replaced sooner or later, but it is just very strange to me how I went from having no problems, to having misfires and getting it fixed, to now having this problem in a matter of a week or two and with no sign of trouble from the SES. In the meantime, I appreciate your help with this matter.
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Old 04-21-2017, 12:52 PM   #14
jfoj
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What OBDII tool/App do you have? Make, model or part number. This info would be useful for anyone that is familiar with your tool/App. Some do not support Live data as well, these should be replaced with an App that supports Live data and Logging.

Need to see warm idle Fuel Trim values for starters.

MAF value at idle in Park or Neutral would also be useful.

Cleaning a MAF rarely improves anything. On these cars the MAF is so far away from anything that could contaminate it, they rarely have a problem unless someone is running an after market air filter that is oiled. Even with an oiled air filter, rarely would a MAF be so contaminated it would perform very poorly.
__________________
Solve your misfires, lean codes, rough idle - http://forum.e46fanatics.com/showthread.php?t=897616

Fuel pump failures - http://forum.e46fanatics.com/showthread.php?t=929501

Temp Info - http://forum.e46fanatics.com/showthread.php?t=964491

Hidden OBC Menu - Check Voltage, Temp, Fuel Level - http://forum.e46fanatics.com/showthread.php?t=239619

E46/E39 GM5 Door Lock Info - www.bmwgm5.com

Lower hose temp switch O-ring - BMW #13621743299

Last edited by jfoj; 04-21-2017 at 12:53 PM.
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Old 04-21-2017, 01:29 PM   #15
nikos07
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Quote:
Originally Posted by jfoj View Post
What OBDII tool/App do you have? Make, model or part number. This info would be useful for anyone that is familiar with your tool/App. Some do not support Live data as well, these should be replaced with an App that supports Live data and Logging.

Need to see warm idle Fuel Trim values for starters.

MAF value at idle in Park or Neutral would also be useful.

Cleaning a MAF rarely improves anything. On these cars the MAF is so far away from anything that could contaminate it, they rarely have a problem unless someone is running an after market air filter that is oiled. Even with an oiled air filter, rarely would a MAF be so contaminated it would perform very poorly.
The OBDII tool I have is the CAN OBDII Memoscan U581, and when checking trouble codes I've seen that it has an option for Live Data. I will play around with it and try and get those values, although I am not familiar with which values are considered "good" or "bad."

I doubt the MAF is contaminated as well, even though I am running an AFE intake with a dry filter but since I am going to inspect the DISA and the intake boots I might as well take the time to clean it as well.
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Old 04-21-2017, 02:41 PM   #16
jfoj
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First mistake, you do not have OBDFusion. Less than $30, will blow this other tool away.

If you have a smart phone or table, get an OBDII App and interface so you can read the codes along with Live/Realtime or Freeze Frame data then you will know exactly what is going on with the engine fuel management system.

The OBDFusion App and proper VeePeak interface from Amazon are less than $30 for both for iProducts, less than $20 for both for Android

OBDFusion for Android is is $3.99.

https://www.amazon.com/Veepeak-Bluet...peak+bluetooth

OBDFusion, for the iProducts it is $9.99.

For iProducts you NEED a Wifi adapter or LE Bluetooth adapter which are more expensive and VeePeak does not offer these yet..

iProducts requires Wifi - https://www.amazon.com/dp/B00WPW6BAE...ywords=veepeak
__________________
Solve your misfires, lean codes, rough idle - http://forum.e46fanatics.com/showthread.php?t=897616

Fuel pump failures - http://forum.e46fanatics.com/showthread.php?t=929501

Temp Info - http://forum.e46fanatics.com/showthread.php?t=964491

Hidden OBC Menu - Check Voltage, Temp, Fuel Level - http://forum.e46fanatics.com/showthread.php?t=239619

E46/E39 GM5 Door Lock Info - www.bmwgm5.com

Lower hose temp switch O-ring - BMW #13621743299
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Old 04-21-2017, 04:32 PM   #17
Alex323Ci
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Quote:
Originally Posted by nikos07 View Post
I am not not screwing around nor am I in denial that my car could have more of a problem- that's why I created this thread. However, I had already been planning on changing the fuel filter as it has never been replaced before and have heard that the performance could be hindered if the MAF sensor is not properly cleaned, which is why I asked for your input on both matters. I am planning on examining the DISA and intake boots this weekend
since this came on around the same time as the other issues i doubt it is either the filter or MAF. what may be of issue is something tweaked when you were taking the engine cover off to do the coils and plugs. i would suspect a possible ground on coil but that usually shows up in a code for some cylinders. maybe vacuum leak, too early to say.

doing both a new fuel filter and sensor cleaning can not hurt, actually it could help but i think it's likely neither of those. but replacing the fuel filter is a GOOD thing. fuel filters can get plugged up, this is absolutely a fact. and it will cause driveablity problems related to fuel delivery. FACT.

it is smart to replace a fuel filter before jumping the gun and buying a new fuel pump. that's just silly. because if it's just the filter you've saved hundreds of dollars over a genuine BMW pump. and if you're one of those few who have real pump issues then you NEED to replace the filter anyways. this is logical thinking at it's base
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Old 04-21-2017, 04:36 PM   #18
Alex323Ci
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when it comes to reading codes and helping people, listen to jfoj on that. he is really good at reading the codes and tracking down the hard to solve issues.

if he asked you to get OBDFusion, do as he asks if you want some detailed help
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OE CSL WHEELS - OE CSL BRAKES - OE AUTOFLD MIRRORS - CSL RACK - CSL TRUNK - CSL DIFFUSER - AA TUNE - AA PULLEYS - AS 40% SSK - BILSTEIN PSS9s
CF CSL LIP - NAV- BMWP CF STRUT BAR - BMW GROUP N MNTS - GRUPPE M CF INTAKE - SUPERSPRINT - UUC S/S LINES, RTABs - H&R SWAYS - 4.10 M-SPORT DIFF

Last edited by Alex323Ci; 04-21-2017 at 04:43 PM.
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Old 04-21-2017, 05:42 PM   #19
nikos07
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Quote:
Originally Posted by jfoj View Post
First mistake, you do not have OBDFusion. Less than $30, will blow this other tool away.



If you have a smart phone or table, get an OBDII App and interface so you can read the codes along with Live/Realtime or Freeze Frame data then you will know exactly what is going on with the engine fuel management system.



The OBDFusion App and proper VeePeak interface from Amazon are less than $30 for both for iProducts, less than $20 for both for Android



OBDFusion for Android is is $3.99.



https://www.amazon.com/Veepeak-Bluet...peak+bluetooth



OBDFusion, for the iProducts it is $9.99.



For iProducts you NEED a Wifi adapter or LE Bluetooth adapter which are more expensive and VeePeak does not offer these yet..



iProducts requires Wifi - https://www.amazon.com/dp/B00WPW6BAE...ywords=veepeak


I have an iPhone so once I download the app, all I need is the Wifi adapter from the link you provided?


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Old 04-21-2017, 06:49 PM   #20
jfoj
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Yes
__________________
Solve your misfires, lean codes, rough idle - http://forum.e46fanatics.com/showthread.php?t=897616

Fuel pump failures - http://forum.e46fanatics.com/showthread.php?t=929501

Temp Info - http://forum.e46fanatics.com/showthread.php?t=964491

Hidden OBC Menu - Check Voltage, Temp, Fuel Level - http://forum.e46fanatics.com/showthread.php?t=239619

E46/E39 GM5 Door Lock Info - www.bmwgm5.com

Lower hose temp switch O-ring - BMW #13621743299
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