BMW 1 Series Coupe Forum / 1 Series Convertible Forum (1M / tii / 135i / 128i / Coupe / Cabrio / Hatchback) (BMW E82 E88 128i 130i 135i)
 





 

Post Reply
 
Thread Tools Search this Thread
      10-24-2014, 01:29 PM   #1
tglazed
Lieutenant
44
Rep
406
Posts

Drives: 135i
Join Date: Feb 2014
Location: SLC, Utah

iTrader: (1)

Limp Mode- No CEL

So I've done some searching but every thread I come across doesn't ever give a solution. My vehicle is a 2008 135i. Mods are intercooler, downpipes, axle back exhaust, dci intakes, Cobb off the shelf map stage 2+ sport LT. Driving home from work yesterday it was building post fine. Then I started accelerating from a red light, around 50% throttle and the dreaded half engine light popped up. I plugged in my access port when I got home and had the codes:
P30FF
H2AAF
H2FDB
H2FDA
I checked vacuum lines and charge pipe and inter cooler piping for leaks and there was nothing. I reset the ECU and now there are no codes but my car is still in limp mode... Does this sound like the HPFP? It was replaced 28,000 miles ago. Help me diagnose my vehicle, if I missed anything let me know. Sorry for the novel
Appreciate 0
      10-24-2014, 01:38 PM   #2
tglazed
Lieutenant
44
Rep
406
Posts

Drives: 135i
Join Date: Feb 2014
Location: SLC, Utah

iTrader: (1)

Btw I was watching my psi on access port and it will not go above 0. My guess is that I limp mode, waste gates are completely open to prevent you from building boost. Also my hpfp number on accessport was 750-850. Not sure how that number is measured

Last edited by tglazed; 10-25-2014 at 11:30 AM..
Appreciate 0
      10-25-2014, 11:42 AM   #3
tglazed
Lieutenant
44
Rep
406
Posts

Drives: 135i
Join Date: Feb 2014
Location: SLC, Utah

iTrader: (1)

Uninstalled accesport, didn't help. Anyone have ideas
Appreciate 0
      10-26-2014, 12:28 AM   #4
fboutlaw
Cone Cruncher
fboutlaw's Avatar
United_States
30
Rep
534
Posts

Drives: Dinan 135i
Join Date: Apr 2010
Location: Cupertino, CA

iTrader: (3)

30FF is boost leak. You have an air leak somewhere. This code is legit, I passed it off for almost a year, but when I pulled my intercooler off, found a missing o-ring. I really was leaking air. My recommendation is double checking all the work you've had garages do.
Appreciate 0
      10-26-2014, 10:09 AM   #5
tglazed
Lieutenant
44
Rep
406
Posts

Drives: 135i
Join Date: Feb 2014
Location: SLC, Utah

iTrader: (1)

I do a pressure test as soon as I get back into town. I'll keep this updated and post the solution when I find it.

Update: boost leak test came out fine. No leaks

Last edited by tglazed; 10-26-2014 at 04:48 PM..
Appreciate 0
      10-26-2014, 05:48 PM   #6
Pig Farmer
Major
340
Rep
1,293
Posts

Drives: E92M
Join Date: May 2010
Location: Florida

iTrader: (0)

Two of the codes are electrical shorts. I wonder if you have a bad pressure converter (aka: boost solenoid). BMW part number 11747595374.
Appreciate 0
      10-27-2014, 10:51 AM   #7
tglazed
Lieutenant
44
Rep
406
Posts

Drives: 135i
Join Date: Feb 2014
Location: SLC, Utah

iTrader: (1)

If it was a bad boost solenoid would that prevent me from going above zero boost?
Appreciate 0
      10-27-2014, 06:42 PM   #8
Pig Farmer
Major
340
Rep
1,293
Posts

Drives: E92M
Join Date: May 2010
Location: Florida

iTrader: (0)

Quote:
Originally Posted by tglazed View Post
If it was a bad boost solenoid would that prevent me from going above zero boost?
I don't know, but that's a good question. If one were working, and the other one quit, I suspect you could get partial boost from one turbo. But that's pure speculation. Do you have a boost gauge? If so, are getting any boost at all, or are you in a state of vacuum at all times?
Appreciate 0
      10-27-2014, 07:18 PM   #9
tglazed
Lieutenant
44
Rep
406
Posts

Drives: 135i
Join Date: Feb 2014
Location: SLC, Utah

iTrader: (1)

I was using my accesport as my boost gauge. So I am not sure how accurate it is but I am pretty sure it is accurate seeing that my bov isn't even going off and I can't hear my turbos at all. It's not getting over 0 though. It's like both wastegates are open all the time. Not sure if it does this in limp mode?
Appreciate 0
      10-28-2014, 01:44 PM   #10
tglazed
Lieutenant
44
Rep
406
Posts

Drives: 135i
Join Date: Feb 2014
Location: SLC, Utah

iTrader: (1)

Psi isn't getting over -0.4
Appreciate 0
Post Reply

Bookmarks

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 -5. The time now is 04:32 AM.




1addicts
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
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