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E46 (1999 - 2006)
The fourth generation 3 Series (E46 chassis) was introduced in 1999 and set the standard for engineering and performance during it's years of production including being named to Car & Driver's 10 best list every one of those years! ! -- View the E46 Wiki

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  #1  
Old 01-26-2015, 11:21 AM
328ibemma 328ibemma is offline
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Idle control valve

Hi I'm having trouble trying to get the idle control valve off my bmw 328ci 1999 I took the screws out of it felt loose but couldn't pull it off and didn't want to brake it also throttle cable or something is connected to the bracket aswel. The car idles rough when cold and I have also noticed rips in the bottom hose connecting to the throttle body which I have orderd new one and waiting for part.
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  #2  
Old 01-26-2015, 01:44 PM
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moiz21 moiz21 is offline
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You need to disconnect the throttle body cable. And then just pull really heard. It is wedged in there pretty tight. If you are sure you removed all the bolts, it will take some effort to get it out.
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  #3  
Old 01-26-2015, 11:37 PM
328ibemma 328ibemma is offline
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Cheers. Do I just pull the throttle body cable away this isn't screwed an attached to it right?
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  #4  
Old 01-27-2015, 06:25 AM
dki378 dki378 is offline
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If you mean the wire harness cable attached to the ICV, yes, disconnect before removal. If you mean the wire/cable that is actuating the throttle body, yes also. This is not screwed down but has a little ball at the end of the cable that gets hooked onto the throttle body.
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  #5  
Old 01-27-2015, 07:39 AM
teklord69 teklord69 is offline
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Quote:
Originally Posted by 328ibemma View Post
Hi I'm having trouble trying to get the idle control valve off my bmw 328ci 1999 I took the screws out of it felt loose but couldn't pull it off and didn't want to brake it also throttle cable or something is connected to the bracket aswel. The car idles rough when cold and I have also noticed rips in the bottom hose connecting to the throttle body which I have orderd new one and waiting for part.
Its easier if you remove and slide off the rubber bracket out from the ICV.. Then pull the ICV staright out with some force.

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  #6  
Old 03-02-2015, 09:04 AM
328ibemma 328ibemma is offline
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Hi guys I stil have this problem with my Bmw 328ci 1999 when the car is cold the revs will drop to 4000 and pik bck up to bout 9000rpm this wil do this until the car is warm it then runs fine no faults. I have had the icv cleaned new lower boots because they were split, there was a vacuum leak but we found all the leaks and sorted it. New spark plugs new maf, throttle body cleaned,had it diagnosed and the bloke said there was no faults about from something about a thermostat which he wasn't concerned about this causing the problem he did say it wasn't my engine temp in the car so thought nothing of it. The mixture was running abit rich stil but I did have little fuel in it at the time I previously went there before and the mixtures were real bad cuz of a leak he now saying it a lot better. But I am stil having this problem in the mornings with the revs dropping and picking back up into nearly stalling please help
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Old 03-02-2015, 11:13 AM
teklord69 teklord69 is offline
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Quote:
Originally Posted by 328ibemma View Post
Hi guys I stil have this problem with my Bmw 328ci 1999 when the car is cold the revs will drop to 4000 and pik bck up to bout 9000rpm this wil do this until the car is warm it then runs fine no faults. I have had the icv cleaned new lower boots because they were split, there was a vacuum leak but we found all the leaks and sorted it. New spark plugs new maf, throttle body cleaned,had it diagnosed and the bloke said there was no faults about from something about a thermostat which he wasn't concerned about this causing the problem he did say it wasn't my engine temp in the car so thought nothing of it. The mixture was running abit rich stil but I did have little fuel in it at the time I previously went there before and the mixtures were real bad cuz of a leak he now saying it a lot better. But I am stil having this problem in the mornings with the revs dropping and picking back up into nearly stalling please help
9000 RPM! wow
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Old 03-02-2015, 12:11 PM
328ibemma 328ibemma is offline
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Clearly I ment 900
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  #9  
Old 03-02-2015, 12:12 PM
328ibemma 328ibemma is offline
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It will drop to 400rpm and pik back up to normal
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  #10  
Old 03-02-2015, 12:13 PM
328ibemma 328ibemma is offline
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Only when cold
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  #11  
Old 03-02-2015, 07:04 PM
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ahull ahull is offline
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Originally Posted by 328ibemma View Post
Only when cold
vanos seals. just go to beisansystems.com
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Old 03-03-2015, 01:12 AM
328ibemma 328ibemma is offline
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There is no loss of power tho only does this when cold
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Old 03-03-2015, 02:05 AM
jjp735i jjp735i is offline
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When I did my ICV, I first cleaned it and could hear it click back and forth. Put it back on and still had a bouncy idle. Bought a used one off ebay, replaced and all is fine. Runs smooth when cold or hot. Been running fine for 8 months.

I think just because you clean it and it moves freely doesn't mean it's fixed.

Just what happened to me.
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  #14  
Old 03-03-2015, 06:47 AM
328ibemma 328ibemma is offline
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Icv

Cheers pal that was exactly what I was thinking and have orderd one off eBay last night for 16 so very happy and looks to be in very good condition. Hopefully this will finally sort it
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  #15  
Old 03-16-2015, 02:03 PM
328ibemma 328ibemma is offline
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Revs drop when cold

Changed the Icv and am still having this problem. Had it diagnosed and have a fault of a thermastat control the mechanic didn't seem worried about this and told me it had nothing to do with my engine temp but recently I have noticed my engine takes ages to get to half way from a cold start up. I am thinking this has something to with the problem as I'm really running out of ideas now.
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Old 03-17-2015, 05:25 AM
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What a sticky tstat will do is accelerate any oil sludging in engine and CCV and spark plugs. And clogged CCV can cause some stumbling. And I still say the Vanos seals might be causing this. You don't notice the power loss because it's gradual over time, but once the seals get bad enough you'll have A cold start stumble just as described on beisan website. It's worst on the m52 engine- 323 328.
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DIY E46 Merit Badges: Sunroof resurrection, CCV, OFHG, VCG w/ VANOS seals, DISA, Cooling Refresh I, steering giubo, window regs, Magnetic Infandibulator (see wiki)
DIY On deck: Rear Diff bushing. UUC SSK, clutch job eventually, Wavetrac LSD
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  #17  
Old 03-19-2015, 12:11 PM
328ibemma 328ibemma is offline
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Just to let you know turns out my thermostat was fuked and this was causing the problem this is why I was having trouble in the morning and the revs would drop. All is fine now so glad I didn't think about the vanos seals that would of cost me a lot of money.
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