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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 Wed, Jun-16-2010, 09:06:58 PM   #41
ECSTuning
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You can find the parts needed below...

Click HERE to order or for more information.

The Air Pump, Valve, and Hose


Feel free to shoot us a PM if you have any questions!

Cheers,
Joe
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Old Tue, Jul-06-2010, 03:28:46 AM   #42
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does this valve affect performance?
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Old Tue, Jul-06-2010, 04:13:50 AM   #43
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never did affect it. I believe the pump is only used on cold start to reduce emissions.

If I'm wrong a vulture will pounce and correct me.
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Old Tue, Jul-06-2010, 04:51:52 AM   #44
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Yea, its just an emissions thing. I replaced mine. Pretty easy and dont need a lot of tools. Easy DIY imo.
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Old Tue, Jul-06-2010, 05:55:00 PM   #45
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Yep.

One 10 mm box end wrench will do the trick.
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Old Fri, Jul-30-2010, 05:59:32 AM   #46
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a little refresh on this thred...

I sure have the same problem, my pump does not pull air... today I am going to exchange the pump.
If the new pump won't work, what else could be the issue ? valve,hose,gasket...all checked.

Or the question is, what makes the pump blow ? Temp sensor ?

Thanks
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Old Fri, Jul-30-2010, 01:54:36 PM   #47
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leaking valve over time over works the pump.
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Old Fri, Jul-30-2010, 08:03:53 PM   #48
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Quote:
Originally Posted by MisterEm View Post
leaking valve over time over works the pump.
is that valve located over the ECU ?

I switched the pumps and still no secondary air flow...
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Old Sat, Jul-31-2010, 03:11:34 AM   #49
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Quote:
Originally Posted by sic View Post
is that valve located over the ECU ?

I switched the pumps and still no secondary air flow...
No sir. It's on the passenger side of the motor, above the heatshield, and over the headers. There is a pre-bent plastic hose that connects the pump to the valve as well.

I replaced the hose and and the valve and the random AA code disappeared.

Hope this helps,
Mike
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Old Sat, Jul-31-2010, 03:48:31 AM   #50
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We wouldn't have this problem if we had the german counterpart. Emissions here suck!
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Discussing secondary air pump replacement 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)