E90Post
 


The Tire Rack
 
BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Mechanical Maintenance: Break-in / Oil & Fluids / Servicing / Warranty > Surging. non smooth problems plus Service Engine light



Reply
 
Thread Tools Search this Thread
      08-07-2013, 04:00 AM   #1
Ryan335i
New Member
United_States
2
Rep
8
Posts

Drives: 2007 e92 335i
Join Date: Jun 2013
Location: Long Beach, Ca

iTrader: (1)

Lightbulb Surging. non smooth problems plus Service Engine light

My problem is when I am in any map (JB4 ISO G5) apart from stock it is not smooth like stock.. very lurchy in first and when changing into 2nd it hesitates briefly like a missfire or stall ?? very weird.. I think I need to change the plugs at minimum and possibly coilpack #1 because it had thrown a Service Engine Soon light while I was WOT but then the light went off as I was crusing. I did not stop when the light came on. i just put it back in drive and went the speed limit (45) then after about 3-5 miles it went off and drove normally.

Also at part/low throttle in D or DS (when JB4 Active, I only ever run Map 1 or 5 all I have is DCI) the car has a very uneven surge type feeling compared to when in stock Map 0.

I'm think my solutions could be to change to coil pack one bank 1 (Cyl 1) as well as ALL of the spark plugs
because I went into my mech so he could diagnose the codes because i did have the JB4 check for codes and it did find them.. I didn't know at the time that I could read them without a computer myself..
I was also considering an intake valve clean via walnut shell blasting.
My final thing I can think of to resolve the surging uneven feeling on wot is to update the firmware of the JB4. I purchased mine off the forum so i'm not sure what version it currently has on it. I have the bms cable to be able to connect and update firmware, I just dont have a pc or have the cable connected. Do you think these fixes could resolve the problems I'm having?
any help would be much appreciated... short of sending a log to terry@BMS.

Kind Regards.

Update:
I Just put in Lucas Oil "Deep Clean fuel system cleaner" to my tank. I thought I was noticing a bit a difference, but while racing a Supra today (I Won, JB4 Map5 + BMS DCI) I, probably got up to about 80mph before hitting traffic up ahead at the lights.. I experienced a ServiceEngineSoon (SES) light right after the run. I put trans back into D continued to drive down the road and when I came to the next set of traffic lights my car was idling rough (like what I would call a missfire).
I then, against my better judgement, continued to drive to my intended destination. and then about 2 miles later, 4mins with traffic, the light went off and the car ran normally.
I have since been timid to go WOT until I get a better idea of what is happening, but I have gone about 50% throttle with no problems.. Car seems to start fine as well.. Just rattles like a sumunabitch! (Not turbo/wastegate related as far as I Know as the rattle goes away after a short period of time and it does not resonate with the engine when revving slightly (3k max).

Please Brainstorm with me people!
Appreciate 0
Reply

Bookmarks

Tags
coil, injectors misfire, jb4, spark plugs

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


All times are GMT -4. The time now is 04:21 AM.




e90post
Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST