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I have read tons of threads about some of your cars having rough idle and almost to the point of stalling while at a stop. Well, I'm one of those guys also and it is pissing me off that the freaking dealership mechanics can't find the problem. I read about how the MAF needs to be cleaned and the ground wire fixed being one of the problems. DOES ANYONE in this forum have any pics on how to do those cleanups/fixings to the MAF? If so, please post it so I can check my 3's MAF sensor and ground wire. I know where the sensor is and how to take it off, but what am I looking for? The only thing is the wire, where is the ground connector everyone is speaking off and where is the rust mostly visible at?
Any help would be greatly appreciated.

A pissed off 3 owner

p.s. everything is stock in my 3

:mj:
 

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Sure i'll let u know what happen!!!! the funny thing i notice is that with the idle problem i have right now it seems that my car actually have a better fuel economy !!! anyone ?
 

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ok well ive had the same problem.. and i fixed it :) yay
i read a lot about EGR valve.. and it seems that if they are really clogged up with carbon, they will cause idle to be bouncy, which would result in car having vibes..
when i took EGR out.. i literally had to scrape the carbon off with a flat head screw driver.. and a lot of CARB cleaner... I also cleaned my TB, and intake Manifold since i already had the coolant drained....
well.... i went through 2 bottles of CARB cleaner.. but after I was done, everything was nice and shiny.. i cleaned the MAf aswell...
I put everything back together.. and now.. idle is between 645-660 :) which I would consider perfect :) oh yea.. lets see for how long
 

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[quote author=Youngun link=topic=136163.msg3206585#msg3206585 date=1246464778]
I think I might try cleaning my EGR valve today and see if that helps.
[/quote]
just make sure to pick up some coolant, and FYI... EGR valve is a BITCH to take out !!!
 

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[quote author=Youngun link=topic=136163.msg3208148#msg3208148 date=1246546050]
do I need to drain the coolant to do this? I didn't do it yesterday.
[/quote]
yes you do... since EGR has a coolant line going to it.. and in order to get to the second bolt, the one further to firewall you need to take one of the "lower" bigger coolant hoses off
 

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yea you also might want to get a new EGR valve gasket.. they are like $9 at the dealer..
 
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