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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 07-11-2014, 02:02 AM   #81
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Join Date: Apr 2011
Location: American Canyon
Posts: 78
My Ride: 323i
Smile CCV change

Originally Posted by Alfyman View Post
Yes that is the lower intake boot, You may need a New MAF Sensor and New coil boots and a New O2 sensor, The CCV on mine was cracked, I put on new hoseson but I couldn't see the crack, I would recommend buying a new CCV beforehand, Clip all the Hoses first, then feed them up through, It may take all day to do it (4 to 5 hours). you have to remove the Throttle body valve also ( I just let it hang and dangle out of the way) and I had to break out the old CCV, I broke it in two. I could see the crack after I pulled it out, I saw it on youtube to see how to do it. go to www.ecstuning.com or www.partsgeek.com. I feel so much better (every week a new code) but then I started with 13 codes then down to none after doing the work, Oh yeah, If you should erase the codes then drive the car for 70 miles so the car computer can reset. good luck..
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Old 07-11-2014, 04:45 AM   #82
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Join Date: Feb 2014
Location: Brisbane, Australia
Posts: 236
My Ride: 2000 BMW 323i
my MY00 323i has the same start-up and hesitation issues at start-up but I wouldn't say its down on power... its slow but it is a 323i it feels like a camry under full throttle which is about right.
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Old 10-14-2014, 04:31 PM   #83
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Join Date: Oct 2014
Location: Central Florida
Posts: 1
My Ride: 323i
Can feul mixtureor air leaks cause transmission to fal

Originally Posted by housenation View Post
can the air leaks lead to transmission
YES IT CAN! I have been reading this thread because my 2000 323i all of the sudden started running really rough and my transmission light would come on and it would shift up and down really hard! So I saw on here some one had said that when the disconnected their MAF Mass air flow sensor the car ran better. So being that I have had three cars with bad MAF sensors I decided to go out and start the car and disconnect the MAF plug. When I did this the car stopped shaking and started to idle smoothly. When I went in to turn off the car I noticed that when I unplugged the MAF it threw the trans in default. SOOOO. I took the MAF away from the breather box and intake tube and looky what I found! The guy I bought the car from had wrapped black tape around the front side of the MAF to try to make up for a lost seal from the breather box to the MAF. He had wrapped it so tight that it had from the heat started pulling its self off of the flang and down across the MAF intake grill There were three strips of tape hindering air from passing strait through the MAF. So..... I removed the tape. Took the MAF in the house and sloshed it in some hot soapy water to clean the sensor probes. Rinsed it blew it out re installed it and not only did my feul mixture problem go away but my transmission problem went away also..... SOOO It just goes to show you that IT CAN BE ANY NUMBER OF THINGS CAUSING MANY CODES..................
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323i, bmw, e46, idle, misfire

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