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E46 M3 (2001-2006) Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006.


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Old Wed, Aug-01-2012, 06:46:59 PM   #1
MikeSamteladze
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Default Leak Diagnosis Pump Change DIY

Few times ago a had a cold start problem on my 2003 M3.
Every morning when engine was completely cold, it couldn't start properly (or at all) at first try, but second try was complete success and after that it ran normally.

Finally I've got SES and inspection showed error code P1434
After a little research I could find out that it means Leak Diagnosis Pump problem and this part 16137193479 should be replaced.

When I brought my car to the mechanics I did some pictures while he was replacing it. Not the best DIY but I think better than nothing
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Old Wed, Aug-01-2012, 06:48:23 PM   #2
MikeSamteladze
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Default Re: Leak Diagnosis Pump Change DIY

Final Step
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Old Wed, Aug-01-2012, 08:21:30 PM   #3
RedM3/4
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Default Re: Leak Diagnosis Pump Change DIY

Thanks, good to know. I didn't realize this part existed!

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Old Mon, Jun-16-2014, 06:22:28 PM   #4
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Default Re: Leak Diagnosis Pump Change DIY

had the same code appear from the reader at checker auto, easy fix: turn on the ignition wait about 10 seconds start the car and the check engine light doesn't come on. this is a 2007 x3
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Old Mon, Jun-16-2014, 06:39:13 PM   #5
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Default Re: Leak Diagnosis Pump Change DIY

I had the same code for a while. Replaced the pump and haven't seen it since last summer.
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Old Mon, Jun-16-2014, 06:43:48 PM   #6
boconnor811
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Default Re: Leak Diagnosis Pump Change DIY

I just did this last week, very simple using info on already on the forum. Someone should add these pics to the previous written only diy.
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Old Mon, Jun-16-2014, 07:09:18 PM   #7
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Default Re: Leak Diagnosis Pump Change DIY

what sort of startup issues did this cause?

this may be the key i am looking for .....
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Old Tue, Jun-17-2014, 12:57:25 PM   #8
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Default Re: Leak Diagnosis Pump Change DIY





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Old Tue, Jun-17-2014, 01:01:04 PM   #9
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Default Re: Leak Diagnosis Pump Change DIY

I had the same code for a while.
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Old Fri, Sep-05-2014, 05:59:22 PM   #10
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Default Re: Leak Diagnosis Pump Change DIY

Quote:
Originally Posted by Dirty Elf View Post
what sort of startup issues did this cause?

this may be the key i am looking for .....
Wondering the same thing. Need more input from others that had this part replaced..
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Discussing Leak Diagnosis Pump Change DIY in the E46 M3 (2001-2006) Forum - Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006. at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)