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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 Mon, Jun-25-2018, 12:26:32 PM   #11
Jonnie86
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Default Re: Idle-speed control valve, NC Winding

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Originally Posted by Detailer View Post

Good idea about the fuel system cleaner. I'll try to source Techron in Canada.
Lol, why do people always recommend fuel system cleaner on here. That shit doesn't work...

Either pull off the injectors and get them professionally cleaned, or move on to something else, cause its a waste of money.
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Old Tue, Jun-26-2018, 05:55:36 PM   #12
zingbmw
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Default Re: Idle-speed control valve, NC Winding

cleaning the injectors wouldnt be a bad idea. I would check the intake side for any cracking in the hoses and replacing those. I would also suggest a valve job especially if when you open the hood the engine is a little noisy (mine was out of spec and it helped my idle). If it looks really gummed up while youre in there doing the valve job, run sea foam or techron or something through it and hope that helps clean it up.
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Old Tue, Jun-26-2018, 05:57:40 PM   #13
nextelbuddy1
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Default Re: Idle-speed control valve, NC Winding

i had the same issue. turned out my IACV and Alternator plugs were swapped. they both fit each other. once i swapped them my issues and codes went away.

alternator plug should be 2 wires and IACV plug is 3 wire but have the same plug. check them.
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Old Wed, Jun-27-2018, 01:53:53 AM   #14
mrgizmo04
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Default Re: Idle-speed control valve, NC Winding

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Originally Posted by zingbmw View Post
cleaning the injectors wouldnt be a bad idea. I would check the intake side for any cracking in the hoses and replacing those. I would also suggest a valve job especially if when you open the hood the engine is a little noisy (mine was out of spec and it helped my idle). If it looks really gummed up while youre in there doing the valve job, run sea foam or techron or something through it and hope that helps clean it up.
Sea foam...?

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Old Sun, Jul-15-2018, 11:26:03 AM   #15
Detailer
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Default Re: Idle-speed control valve, NC Winding

I'm sorry I did not upgrade this post before.

For future reference, in case someone google this issue, I should post what was my problem and fix.

There was a wire that was cut on the ICV wiring. Probably a mice or something since the car sat in a garage for 3 years without being touched or driven.

Not car runs perfectly!

Thanks all for your help!
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Discussing Idle-speed control valve, NC Winding 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)