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E46 (1999 - 2006)
The fourth generation 3 Series (E46 chassis) was introduced in 1999 and set the standard for engineering and performance during it's years of production including being named to Car & Driver's 10 best list every one of those years! ! -- View the E46 Wiki

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  #1  
Old 01-17-2013, 08:14 AM
tae314 tae314 is offline
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Location: Nixa Mo
 
Join Date: Feb 2012
Posts: 8
Mein Auto: hopefully a 01 325i
Help tons of codes, no idea whats wrong!

my 01 325i would start but would not run longer than a few seconds it would idle rough then die. i checked the codes and there was 13 of them.

p0171-bank 1 too lean
p0300 twice - random misfire
p1352-cylinder 6 misfire during startup
p1346-cylinder 3 misfire during startup
p1348-cylinder 4 misfire during startup
p1345-cylinder 2 misfire with fuel cut off
p1351-cylinder 5 misfire with fuel cut off
p0313 twice - misfire with low fuel
p0174-bank 2 too lean
p0175-bank 2 too rich
p0172-bank 1 too rich

it would run once i unplugged the maf. im thinking fuel pump or massive vacumn leak. any other suggestions would be great its my daily driver and i need it up and running asap.
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  #2  
Old 01-17-2013, 09:59 AM
bluebee's Avatar
bluebee bluebee is offline
Seek to understand,^Value
Location: San Jose, California
 
Join Date: Mar 2008
Posts: 20,146
Mein Auto: 02 BMW 525i M54 auto 130K
Quote:
Originally Posted by tae314 View Post
i checked the codes and there was 13 of them.
Standard advice is to clear them, and then drive the vehicle, and watch to see what pops up as pending, and take the first codes first.

For misfires, all known culprits are listed here:
- How to diagnose a BMW M54 engine misfire (1) & how to battle M54 vacuum leaks (1) (2) (3) & how to solve specific vacuum leak diagnostic trouble codes such as P0171, P0174, P0313 (1) & P0170, P0173 (1) & where to find all the vacuum hoses in the M54 (1)
__________________
Each repair should invariably add to our knowledge base by the process of inexorable incrementalism.
Your job, in return, is to read the suggested threads, where the best people will always add value to those threads, either by pictures or by descriptions, so the next person with the same problem stands on your shoulders.
See also: E39 Bestlinks & How to easily find what you need
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  #3  
Old 01-17-2013, 11:19 AM
smolck's Avatar
smolck smolck is offline
ROLL TIDE!
Location: Birmingham, AL
 
Join Date: Jul 2007
Posts: 22,336
Mein Auto: 2004 ZHP Sedan
Quote:
Originally Posted by tae314 View Post
my 01 325i would start but would not run longer than a few seconds it would idle rough then die. i checked the codes and there was 13 of them.

p0171-bank 1 too lean
p0300 twice - random misfire
p1352-cylinder 6 misfire during startup
p1346-cylinder 3 misfire during startup
p1348-cylinder 4 misfire during startup
p1345-cylinder 2 misfire with fuel cut off
p1351-cylinder 5 misfire with fuel cut off
p0313 twice - misfire with low fuel
p0174-bank 2 too lean
p0175-bank 2 too rich
p0172-bank 1 too rich

it would run once i unplugged the maf. im thinking fuel pump or massive vacumn leak. any other suggestions would be great its my daily driver and i need it up and running asap.
I'd say vacuum leak for sure, possible fuel pump issue. You can rent a fuel pressure tester, there is an EASILY accessible port on the front of the fuel rail, takes 5 minutes to test.

I'd get a smoke test done too, or at least remove all the intake tract from the MAF to throttle body and check for cracks/holes.

Easy and effective first steps in troubleshooting.
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Originally Posted by Fast Bob View Post
now, go burn your Man Card, and buy yourself a Camry....
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  #4  
Old 01-18-2013, 04:53 PM
tae314 tae314 is offline
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Location: Nixa Mo
 
Join Date: Feb 2012
Posts: 8
Mein Auto: hopefully a 01 325i
Did a fuel pressure test. It was very shaky at idle around 45-48psi and when I shut the engine off pressure plummeted. Also with just the pump on it would not read higher than 30 psi and would slowly drop. After this test I decided to go ahead and replace the pump. It's much more responsive but if plug in the maf it starts to idle rougher and rougher till the engine stalls. Going to check intake hoses and disa seal tomorrow.
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  #5  
Old 01-19-2013, 08:05 AM
smolck's Avatar
smolck smolck is offline
ROLL TIDE!
Location: Birmingham, AL
 
Join Date: Jul 2007
Posts: 22,336
Mein Auto: 2004 ZHP Sedan
Quote:
Originally Posted by tae314 View Post
Did a fuel pressure test. It was very shaky at idle around 45-48psi and when I shut the engine off pressure plummeted. Also with just the pump on it would not read higher than 30 psi and would slowly drop. After this test I decided to go ahead and replace the pump. It's much more responsive but if plug in the maf it starts to idle rougher and rougher till the engine stalls. Going to check intake hoses and disa seal tomorrow.
Sounds a lot like a bad MAF.
__________________

Check out my YouTube Channel for DIY's and other fun stuff HERE
Check out my BMWBLOG!
Quote:
Originally Posted by Fast Bob View Post
now, go burn your Man Card, and buy yourself a Camry....
Reply With Quote
  #6  
Old 01-19-2013, 09:59 AM
bluebee's Avatar
bluebee bluebee is offline
Seek to understand,^Value
Location: San Jose, California
 
Join Date: Mar 2008
Posts: 20,146
Mein Auto: 02 BMW 525i M54 auto 130K
If it's the MAF, these may help the OP:
- Cleaning your mass air flow (MAF) sensor (1) (2) (3) (4) (5) and how 'not' to clean your MAF (1) & buying a replacement MAF cheaper than the BMW MAF (RangeRover MAF) (VW MAF) (Hyundai MAF) & MAF resistance testing (1)
__________________
Each repair should invariably add to our knowledge base by the process of inexorable incrementalism.
Your job, in return, is to read the suggested threads, where the best people will always add value to those threads, either by pictures or by descriptions, so the next person with the same problem stands on your shoulders.
See also: E39 Bestlinks & How to easily find what you need
Reply With Quote
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