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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N55 Turbo Engine Tuning and Exhaust Modifications - 335i Tuning > First problem with JB4 in 3 months



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      05-31-2012, 09:51 AM   #1
Sam335ix
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First problem with JB4 in 3 months

Here is the email I sent to Terry, please chime in if you can

I have a n55 335x drive with Jb4, Dp’s CPS and intake… I have been running 103 octane mixed with 93 on map 7 for a week and everything was fine until this morning. I turned the car on and it went to 1000 rpm and shut off, did it 4 times and I finaly took the key out and re started again and it was fine…. About 10 minutes later on the road I got check engine light on and pulled off to the side the road and the car just sputtered and shut it self off… It would then rev to 1500 on its own and then shut off again over and over and I took the key out again and re started and it was fine for another few minutes (I put it to map 0 when it went in to limp mode) and I still have issues…. Car sputters, it goes for a few feet and while in drive everything shuts off….I still have to read the codes but what do you think it might be, I have about 8k on the car.
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      05-31-2012, 09:58 AM   #2
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Read the codes... LOL The answer is there and not on the forum.

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      05-31-2012, 10:00 AM   #3
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^^^ I know but stuck in meetings all day, was wondering what other peeps experience has been similar to mine.
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      05-31-2012, 10:15 AM   #4
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Any chance something came loose?

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      05-31-2012, 10:23 AM   #5
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Based on the dash readings:

2BDA
2BF8
2E4C Actutator or whatever its called.. ok that is the exhaust flap right? What are the other two?
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      05-31-2012, 10:34 AM   #6
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2BDA: Rail pressure sensor, electrical: Short circuit to earth (The diagnostic function monitors the rail-pressure sensor's lower voltage limit.)

2BF8: Fuel Rail pressure sensor, plausibility: Signal frozen (The diagnostic function monitors the variations in the signal from the rail-pressure sensor)

2E4C: Golf Tee mod (disconnected exhaust-gas flap): Normal
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      05-31-2012, 10:36 AM   #7
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Quote:
Originally Posted by Kalud View Post
2BDA: Rail pressure sensor, electrical: Short circuit to earth (The diagnostic function monitors the rail-pressure sensor's lower voltage limit.)

2BF8: Fuel Rail pressure sensor, plausibility: Signal frozen (The diagnostic function monitors the variations in the signal from the rail-pressure sensor)

2E4C: Golf Tee mod (disconnected exhaust-gas flap): Normal
Thank you Kalud, so what the hell does all that mean lol (the first two)? Could the 103 octane casuing it?
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      05-31-2012, 10:38 AM   #8
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Wait for Terry but could be fuel pump? or something came loose (one of the sensors)?

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      05-31-2012, 10:39 AM   #9
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Quote:
Originally Posted by Sam335ix View Post
Thank you Kalud, so what the hell does all that mean (the first two)? Could the 103 octane casuing it?
I would suspect the Fuel connector, the one on top back of the engine. You connected the Procede there back in the days. Might have that one not properly seated it back when removing the Procede to install the JB4. Just an idea but worth looking at:

http://i85.photobucket.com/albums/k4...6/IMG_0353.jpg
http://i85.photobucket.com/albums/k4...6/IMG_0354.jpg
http://i85.photobucket.com/albums/k4...6/IMG_0355.jpg
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      05-31-2012, 10:43 AM   #10
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Quote:
Originally Posted by Kalud View Post
I would suspect the Fuel connector, the one on top back of the engine. You connected the Procede there back in the days. Might have that one not properly seated it back when removing the Procede to install the JB4. Just an idea but worth looking at:

http://i85.photobucket.com/albums/k4...6/IMG_0353.jpg
http://i85.photobucket.com/albums/k4...6/IMG_0354.jpg
http://i85.photobucket.com/albums/k4...6/IMG_0355.jpg

To install the intake, didnt they have to take off and reconnect the BMS intake to the connector? The intake was installed along the DP's and CP a month ago.
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      05-31-2012, 10:43 AM   #11
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Quote:
Originally Posted by Kalud View Post
I would suspect the Fuel connector, the one on top back of the engine. You connected the Procede there back in the days. Might have that one not properly seated it back when removing the Procede to install the JB4. Just an idea but worth looking at:

http://i85.photobucket.com/albums/k4...6/IMG_0353.jpg
http://i85.photobucket.com/albums/k4...6/IMG_0354.jpg
http://i85.photobucket.com/albums/k4...6/IMG_0355.jpg
Thats a good point. If he had the Proceed and didn't put the connector back properly or one of the pins got damaged that could be a possibility.

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      05-31-2012, 10:45 AM   #12
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Quote:
Originally Posted by Sam335ix View Post
To install the intake, didnt they have to take off and reconnect the BMS intake to the connector? The intake was installed along the DP's and CP a month ago.
Its not the same connector, you talk about the MAF connector on the intake and I talk about the Fuel Pressure Sensor just 6 inches back, harder to reach.
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      05-31-2012, 10:52 AM   #13
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Quote:
Originally Posted by Mike@N54Tuning.com View Post
Thats a good point. If he had the Proceed and didn't put the connector back properly or one of the pins got damaged that could be a possibility.

Mike
Its been ok for over a month when everything else was re installed and ran fine.. doesnt make sense why its happening now. I just briefly checked and everything looks fine connection wise (tight). I think map7 and 103 octane mix 50/50 with 93 is what casued the issue.. the question is map 7 with higher boost, could it damage the fuel sensors?
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      05-31-2012, 11:39 AM   #14
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Went for a drive around the parking lot, 1st/2nd/3rd gear pulls.. no issues at all and read the codes but they are still there.
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      05-31-2012, 11:57 AM   #15
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Quote:
Originally Posted by Kalud View Post
I would suspect the Fuel connector, the one on top back of the engine. You connected the Procede there back in the days. Might have that one not properly seated it back when removing the Procede to install the JB4. Just an idea but worth looking at:

http://i85.photobucket.com/albums/k4...6/IMG_0353.jpg
http://i85.photobucket.com/albums/k4...6/IMG_0354.jpg
http://i85.photobucket.com/albums/k4...6/IMG_0355.jpg
Per Terry its the fuel pressure sensor which is not used by JB4 and he thinks somehow its unplugged. I ll check in to in a few hours and report back.
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      05-31-2012, 12:06 PM   #16
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Don't forget to clear codes to see if they return. Also you touched the Fuel Pressure Sensor, you confirm that it's seated correctly, but the fact the car runs fine now make me think it could actually that connector (slightly damaged pin, water inside or something like that). That's why I would clear codes and see what happens in the next days. If it returns, disconnect it and check it visually.
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      05-31-2012, 12:57 PM   #17
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Quote:
Originally Posted by Kalud View Post
Don't forget to clear codes to see if they return. Also you touched the Fuel Pressure Sensor, you confirm that it's seated correctly, but the fact the car runs fine now make me think it could actually that connector (slightly damaged pin, water inside or something like that). That's why I would clear codes and see what happens in the next days. If it returns, disconnect it and check it visually.
Kalud, you are right on my man. I just cleared the codes, put it back on map2 and ran the car hard and only code I got was for the exhaust flap. I am still going to reconnect everything later this afternoon to make sure.

Mike, thank you for your help as well.

Sam
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      05-31-2012, 02:52 PM   #18
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Diognastic tool read 0 psi/pressure for fuel sensor, car runs fine even with it reading 0 so we are now reconnecting everything to make sure and now it's reading 710 psi at idle which is correct. Now I am wondering why the sensor was not reading it correctly to begin with. I now know why my proceed at the time was screwed up which brings me to believe I may have a damaged sensor.
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      05-31-2012, 08:20 PM   #19
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Quote:
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Diognastic tool read 0 psi/pressure for fuel sensor, car runs fine even with it reading 0 so we are now reconnecting everything to make sure and now it's reading 710 psi at idle which is correct. Now I am wondering why the sensor was not reading it correctly to begin with. I now know why my proceed at the time was screwed up which brings me to believe I may have a damaged sensor.
Could be the connector itself, no? If its not plugged / warped / defective the DME would read a bad value from it (like a zero reading). Its certainly possible you had that issue with the Procede which made you give up. At least you will probably get this solved soon now knowing the problem and be back on the road "powerfully"
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      05-31-2012, 08:37 PM   #20
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Quote:
Originally Posted by Kalud View Post
Could be the connector itself, no? If its not plugged / warped / defective the DME would read a bad value from it (like a zero reading). Its certainly possible you had that issue with the Procede which made you give up. At least you will probably get this solved soon now knowing the problem and be back on the road "powerfully"
I will keep an eye on it and if it happens again I will swap it out. I think I am going to buy a proceed and give it another try as well :-)
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      05-31-2012, 09:21 PM   #21
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Great to see it all resolved . I can't wait until i dyno my car in a week! My car is runnning SUPER STRONG.
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      06-04-2012, 12:48 PM   #22
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I will keep an eye on it and if it happens again I will swap it out. I think I am going to buy a proceed and give it another try as well :-)
Any updates ?
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