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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 10-15-2012, 10:38 PM   #1
tks
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Intake Manifold Question:

So I have a rattle coming from the intake manifold, have narrowed it down to the adjuster unit from realoem.com
http://www.realoem.com/bmw/showparts...79&hg=11&fg=40

It's part number 7, and I have no idea what it is, although it looks like it operates under a vacuum. When I pry against it (rod pushed in) the noise goes away. It seems like something is just going berserk but it only happens at idle, but... yeah any help appreciated! Couldnt find the info on AllData
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Old 10-16-2012, 06:37 AM   #2
BimmersGarage
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Search DISA unit failure.

To diagnosis:
During idle, if you disconnect the control cable and the noises goes away, then it confirms the unit is bad. You'll need to replace.
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Old 10-16-2012, 06:54 AM   #3
jfoj
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Suggest you read the first link below in my signature.

DISA is about $175 for a new replacement. Suggest www.bmwmercedesparts.com

You really need to repair the thing before you end up with a catastrophic failure that will cost you WAY more than $175.
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Lower hose fan switch O-ring - BMW #13621743299
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Old 10-16-2012, 10:26 PM   #4
tks
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bought it from dealer today for 250usd after tax... noise gone! i think i might take apartthe old one to see what went wrong, all seals still in tact
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Old 10-17-2012, 11:31 AM   #5
Jesse M
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Quote:
Originally Posted by ruskisky View Post
bought it from dealer today for 250usd after tax... noise gone! i think i might take apartthe old one to see what went wrong, all seals still in tact
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Old 10-17-2012, 12:46 PM   #6
RayPooley
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Quote:
Originally Posted by ruskisky View Post
bought it from dealer today for 250usd after tax... noise gone! i think i might take apartthe old one to see what went wrong, all seals still in tact
I would like to reinforce jFoj's suggestion that you read his excellent article on this subject, and others. It explains about the dangers of the metal pin that holds the flapper in place. It can come out and end up entering a cylinder and f**k up your motor good style. So if you have already fitted the new one, and you cannot see the metal pin in the old one, you might want to remove the new one and see if you can find the pin lying around inside inlet manifold and remove it. This is good advice and you should act upon it.
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Old 10-24-2012, 02:56 PM   #7
alesan1
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Hi guys
I have a 330i and i detected a loose hose on side of the muffler, I lift the car and I saw the other part and i connected, this hoose loose can cause the engine work badly begining the day? Can somebody helpme with this doubt?

best regards
Alejandro
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