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E46 Xi Forum
The E46 XI was produced from 01-05 in sedan and touring body styles. Powered by either a 2.5L inline 6 in the 325xi or a 3.0L inline 6 330xi. Discuss all thing about BMW AWD E46 'Xi' here.

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Old 03-07-2011, 02:15 AM   #21
khalazad
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Join Date: Jun 2010
Location: Los Angeles
Posts: 65
My Ride: 2006 330CI Vert ZHP
Yea I have the same issue with my 06 330ci. When i first pulled the P0171 and P0174 I took a look at the lower boot and saw a crack... I replaced the lower boot with a new one and the codes still come up!!!!!! I havn't changed out my O2 sensors... but I am getting suspiciious that it has something to do with the DISA... Perhaps even a minor leak in the DISA box... You might want to check that out... Im going to learn more about the DISA and if I discover anything relevant i will be sure to post on this thread, unless anyone else can help with this.. This is drving me crazayyyyyy!
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2006 330CI Convertible ZHP
SLVGRY body, black ZHP wheels, black rag top, black interior
Yes... its auto, but I pretty much always ride in S-mode
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Old 03-07-2011, 07:49 PM   #22
SILVRRONIN
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Join Date: Apr 2009
Location: New Orleans
Posts: 366
My Ride: 2003 325.xit
purchase four oxygen sensors from autohouse...$67 each..NOT AUTOZONE!...cheap ****!..BOSCH #1...german!...or buy two at atime, check the intake lines on the passenger side of the engine from the rear allt he way down towards the fornt, check the intake boot, buy $9 sea foam.. on an empty tank, dump it in! then....fill up with ful tank of gas, check your cooling system for the anti freeze leak,....and clean the MAF sensor...
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Old 03-07-2011, 07:54 PM   #23
SILVRRONIN
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Join Date: Apr 2009
Location: New Orleans
Posts: 366
My Ride: 2003 325.xit
disa..

Quote:
Originally Posted by khalazad View Post
Yea I have the same issue with my 06 330ci. When i first pulled the P0171 and P0174 I took a look at the lower boot and saw a crack... I replaced the lower boot with a new one and the codes still come up!!!!!! I havn't changed out my O2 sensors... but I am getting suspiciious that it has something to do with the DISA... Perhaps even a minor leak in the DISA box... You might want to check that out... Im going to learn more about the DISA and if I discover anything relevant i will be sure to post on this thread, unless anyone else can help with this.. This is drving me crazayyyyyy!
I replaced mine last september. I went on the way home from work. it is about $200 + or -???.. my friend focal x placed a DYI on it here on the forum. You will know when its the DISA...engine wil choke and chug... I would recommend replaceing that ASAP.. O2 sensors are...easy finished my last one last week. If you replace an item the codes wont go away immediatly..usually takes a day for it to happen under steady driving. I always clear then with my scanner after I am done with the repair..if it comes on again SES light..,,scan it..read the codes and you will know it you targeted the problem before you cleared the codes..!!! its allabout patience and process of elimination....
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