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Old 02-16-2015, 05:28 PM   #1
Gannon1226
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Join Date: Feb 2015
Location: North Las Vegas
Posts: 152
My Ride: 2003 325i
Rough Idle , Loss of power.

So i bought a 2000 323i a few months ago with the engine light on. Not a good idea i know. anyways so it started out with a few codes and now has close to 10. But only lately have i noticed if i idle a long time, like in a drive thru , it'll begin getting rough and when i pull out i swear its like i cant leave 1st or 2nd gear. Its a automatic and if i simply restart the car the problem goes away ? Any ideas ? Thanks . It has 200k too
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Old 02-16-2015, 05:35 PM   #2
jfoj
OEM ///Member
 
Join Date: Nov 2009
Location: Fairfax, VA USA
Posts: 22,832
My Ride: 330CiC, M5, X5, E93


So lets start with the BASICS.

How about providing codes?

How about providing Freeze Frame data?

This will help us a long way down the road to a solution.

As for a guess as to what is going on, probably Lean codes and misfires.

You probably are having Misfire with Fuel Cut Off, this is why turning the engine off and restarting it cures the issue most of the time. Restarting the engine will clear Misfire with Fuel Cut Off until the misfire counters increment too high and cut fuel again to the problem cylinders. The DME does this to protect the catalytic converters and the engine in general.

Read the first 2 links below in my signature.

Read this thread - http://forum.e46fanatics.com/showthread.php?t=1057387

Read my "BMW 20 Questions" comments in this thread - http://forum.e46fanatics.com/showthread.php?t=1059972

Search YouTube for Scotty Smoke Test. Do what Scotty does and/or build a tester from a related video.

Do not like to read, Readers Digest version:

1. Replace Intake Boots.

2. Replace at least the CCV lower oil return line, but the CCV and hoses need to be replaced.

3. Replace the fuel pump and filter.

4. Do all the over due maintenance on the car, if it is plastic or rubber under the hood it is over due for replacement.
__________________
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; 02-16-2015 at 05:41 PM.
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Old 02-16-2015, 06:24 PM   #3
Gannon1226
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Join Date: Feb 2015
Location: North Las Vegas
Posts: 152
My Ride: 2003 325i
thanks jfoj for the quick reply . last time i tested i had the following codes.

p1250
p0170
p1188
p1189
p1423
p1421
p0420
p0430
p1250
and i did some sort of test on the reader with the following results
engine speed rpm 2680
calculated load percentage 34.1
coolant temp 207
short term fuel trim bank 1 percent 4.7
short term 2 9.4
Why is 2 exactly double one ?
long term fuel trim bank 1 11.7
long term 2 11.7
fuel system loops 1 and 2 closed
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Old 02-16-2015, 06:50 PM   #4
Gannon1226
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Join Date: Feb 2015
Location: North Las Vegas
Posts: 152
My Ride: 2003 325i
Quote:
Originally Posted by jfoj View Post


So lets start with the BASICS.

How about providing codes?

How about providing Freeze Frame data?

This will help us a long way down the road to a solution.

As for a guess as to what is going on, probably Lean codes and misfires.

You probably are having Misfire with Fuel Cut Off, this is why turning the engine off and restarting it cures the issue most of the time. Restarting the engine will clear Misfire with Fuel Cut Off until the misfire counters increment too high and cut fuel again to the problem cylinders. The DME does this to protect the catalytic converters and the engine in general.

Read the first 2 links below in my signature.

Read this thread - http://forum.e46fanatics.com/showthread.php?t=1057387

Read my "BMW 20 Questions" comments in this thread - http://forum.e46fanatics.com/showthread.php?t=1059972

Search YouTube for Scotty Smoke Test. Do what Scotty does and/or build a tester from a related video.

Do not like to read, Readers Digest version:

1. Replace Intake Boots.

2. Replace at least the CCV lower oil return line, but the CCV and hoses need to be replaced.

3. Replace the fuel pump and filter.

4. Do all the over due maintenance on the car, if it is plastic or rubber under the hood it is over due for replacement.
New to the site and not sure if you saw my reply but i think youll see this . Thanks again
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Old 02-16-2015, 07:30 PM   #5
jfoj
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Join Date: Nov 2009
Location: Fairfax, VA USA
Posts: 22,832
My Ride: 330CiC, M5, X5, E93
Vacuum leaks as I mentioned, car is 15-16 years old, probably has all the original parts under the hood to include fuel filter, spark plugs and O2 sensors.

At this point, DO NOT replace any sensors.

You have Lean Codes, Catalytic Converter Efficiency Codes, SAP Codes.

P1250 is a bit unclear, need to verify this is the correct code. Might be a gas cap or Evap issue???

Given that the Freeze Frame info you provide has no code associated with it, I am just guessing this is a Lean code.

If this was my car, I did not fully understand why every single rubber hose needs to be replaced under the hood, I would smoke test the intake and crankcase and find out where all the smoke is pouring out.

I would then probably replace the fuel pump and filter, then move on from there.

Clear codes, see what ones come back first.

The P0420/P0430 codes are the wild cards and may indicate the catalytic converters are on the way out, however, you cannot confirm this for sure until you get the engine running properly and the Fuel Trims back in line.

Hope this is helpful.
__________________
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 02-16-2015, 08:26 PM   #6
Gannon1226
Registered User
 
Join Date: Feb 2015
Location: North Las Vegas
Posts: 152
My Ride: 2003 325i
Quote:
Originally Posted by jfoj View Post


So lets start with the BASICS.

How about providing codes?

How about providing Freeze Frame data?

This will help us a long way down the road to a solution.

As for a guess as to what is going on, probably Lean codes and misfires.

You probably are having Misfire with Fuel Cut Off, this is why turning the engine off and restarting it cures the issue most of the time. Restarting the engine will clear Misfire with Fuel Cut Off until the misfire counters increment too high and cut fuel again to the problem cylinders. The DME does this to protect the catalytic converters and the engine in general.

Read the first 2 links below in my signature.

Read this thread - http://forum.e46fanatics.com/showthread.php?t=1057387

Read my "BMW 20 Questions" comments in this thread - http://forum.e46fanatics.com/showthread.php?t=1059972

Search YouTube for Scotty Smoke Test. Do what Scotty does and/or build a tester from a related video.

Do not like to read, Readers Digest version:

1. Replace Intake Boots.

2. Replace at least the CCV lower oil return line, but the CCV and hoses need to be replaced.

3. Replace the fuel pump and filter.

4. Do all the over due maintenance on the car, if it is plastic or rubber under the hood it is over due for replacement.
Quote:
Originally Posted by jfoj View Post
Vacuum leaks as I mentioned, car is 15-16 years old, probably has all the original parts under the hood to include fuel filter, spark plugs and O2 sensors.

At this point, DO NOT replace any sensors.

You have Lean Codes, Catalytic Converter Efficiency Codes, SAP Codes.

P1250 is a bit unclear, need to verify this is the correct code. Might be a gas cap or Evap issue???

Given that the Freeze Frame info you provide has no code associated with it, I am just guessing this is a Lean code.

If this was my car, I did not fully understand why every single rubber hose needs to be replaced under the hood, I would smoke test the intake and crankcase and find out where all the smoke is pouring out.

I would then probably replace the fuel pump and filter, then move on from there.

Clear codes, see what ones come back first.

The P0420/P0430 codes are the wild cards and may indicate the catalytic converters are on the way out, however, you cannot confirm this for sure until you get the engine running properly and the Fuel Trims back in line.

Hope this is helpful.
Where would you recommend getting all the plastic ? Dont know too much about the car yet , its my first and how much is the fuel pump and all that stuff gonna run me ? If you had to guess
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Old 02-16-2015, 09:04 PM   #7
jfoj
OEM ///Member
 
Join Date: Nov 2009
Location: Fairfax, VA USA
Posts: 22,832
My Ride: 330CiC, M5, X5, E93
I hope you have spare cash and time, it will take about $750 to stabilize the car before you even get to the cooling system and suspension.

First you need to learn how to use www.realoem.com

Then you need to figure these tools out:

http://www.bmwpnpc.com/

http://www.furiousmethod.com/

If you read my fuel pump thread there is info in there where the cheapest OEM pump/sending unit can be found.

www.bmaparts.com use SPECE30 discount code, probably under $125 shipped to your door standard shipping in about 2 days.

CCV and intake boots along with the SAP vacuum hoses and SAP output hose are probably all bad. All in the 1st link below in my signature.

Read, read, read, read, read, read.

Search, search, search, search, search.
__________________
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 02-16-2015, 11:08 PM   #8
Gannon1226
Registered User
 
Join Date: Feb 2015
Location: North Las Vegas
Posts: 152
My Ride: 2003 325i
thanks man ! appreciate the advice
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