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General E46 Forum
This is the place to get answers, opinions and everything you need related to your E46 (sedan, coupe, convertible and wagon) BMW!

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Old 06-30-2014, 01:47 AM   #1
Registered User
Join Date: Jul 2013
Location: Delaware
Posts: 1
My Ride: 2004 BMW 325i
Help My 325i Starts then dies

I have a 2004 325i and as of 4 days ago it refuses to run.
When I crank it on a cold start it starts then runs incredibly rough and dies when you try to put it in gear. Then when you try to restart it, it dies immediately after starting.

In the past I have had this problem and at first I was able to resolve it simply by racing the engine for a few seconds. Then there came a point where that no longer worked so I tried charging the battery and that worked.

The racing the engine worked the first time this dying problem occurred 4 months ago. The charging the battery fixed the problem both times this happened 3 and 1.5 months ago.

The fact these solutions fixed the problem in the past led me to believe I had an electrical issue. So I took the battery and got it tested. It performed in like new shape (its about 2 years old).

The parts guy Suggested it might be the alternator which at the time made sense because of the symptoms and the rate at which they occurred. So I replaced the alternator. No Luck The car still dies.

So after that I go to the store and rent a code reader. It gives me lean codes and P0444. After browsing the forums I begin thinking it might be the disa valve. So I remove the disa valve and sure enough it has failed and is rotating freely. I then replace the disa valve. The car still keeps dying.

I then think based on the forums that maybe its a fuel problem. So I get a fuel pressure gauge and hook it up. It reads 40 psi which makes me think maybe the fuel filter is clogged so I replace the filter/pressure regulator and all of the rubber connectors attached to it. Still no luck

After this I thought maybe it is a vacuum leak so I looked up probable locations for that. There are no cracks or holes in the intake boot and it looks in fairly new condition. the vacuum lines attached to the boot also appear to be in good condition. no luck there

I decide then maybe its the fuel pump causing the issue based on more forum research and people with similar symptoms having there problems solved by fuel pump replacement. No Such luck it still won't run.

Thats where I am out of ideas. Thank you for any help you can Give!
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Old 06-30-2014, 06:36 AM   #2
Registered User
Join Date: Jul 2008
Location: USA
Posts: 1,322
My Ride: 2001 330Ci
Fine a reputable shop that works on BMW's. I think you're in over your head.

Sent from BimmerApp mobile app
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Old 06-30-2014, 08:39 AM   #3
Registered User
Join Date: Jan 2013
Location: Socal
Posts: 4,626
My Ride: 328i, XC70
Is the fuel pressure 50Psi after fuel pump replacement?

You probably have a huge vacuum leak. Take off and inspect your intake boots.
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Old 06-30-2014, 09:32 AM   #4
Registered User
Join Date: Nov 2009
Location: Fairfax, VA USA
Posts: 10,386
My Ride: '06 330CiC, '03 M5
You are not out of ideas, you just did not do your homework.

First, DO NOT LISTEN to "parts guys", they are "parts guys" for a reason. Mechanical work pays FAR more than the parts counter, these guys are behind a parts counter for a reason.

You need to read the 1st link below in my signature.

You also need to buy your own OBDII tool. $35 for an App and interface for your smart phone is all you need. Read this - http://forum.e46fanatics.com/showthread.php?t=967204

Your car is 10 years old, everything under the hood that is rubber needs to be replaced.

If you cannot find the vacuum leak, search YouTube and Scotty Smoke Test.

Love professor Scotty and his no nonsense approach to the world!!
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, Temps, Fuel Level - http://forum.e46fanatics.com/showthread.php?t=239619

E46/E39 GM5 Door Lock Info - www.bmwgm5.com

Lower hose fan switch O-ring - BMW #13621743299
jfoj is offline   Reply With Quote

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