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  #1  
Old 12-19-2009, 05:55 PM
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Question related to throttle body
Just received the parts to do some curative (OS hose) and preventative maintenance (picture attached), including a brand new throttle housing. Although I just applied a very slight pressure on it, I noticed that the butterfly is stuck, I can't move it by hand. Is it normal?
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Last edited by sfcl; 12-19-2009 at 06:17 PM.
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Old 12-19-2009, 08:09 PM
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its normal.
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Old 12-19-2009, 08:17 PM
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Thanks Killcrap.
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Old 01-29-2010, 02:37 PM
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Just a question. Does the throttle body ever need any cleaning? If you open the butterfly and do a whipe around. As you mentioned though, would the butterfly be stuck as its electronic?
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Old 01-29-2010, 03:08 PM
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Originally Posted by dpgx5 View Post
Just a question. Does the throttle body ever need any cleaning? If you open the butterfly and do a whipe around. As you mentioned though, would the butterfly be stuck as its electronic?
Yes, looking at the throttle body I removed recently, it needs to be cleaned assuming it is old (I'd say every year or 2 in normal conditions). The butterfly is not really stuck in fact, you can open it carefully, no problem (at least on a 3.0), so you can spray a carb cleaner and whipe it.
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Old 01-29-2010, 03:56 PM
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Thank You I've cleaned my previous cars/trucks, I do remember them being a bit black. Did you need to replace any seals Or just remove & clean and bolt back on?
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Old 01-29-2010, 04:26 PM
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It seems that there are 2 models, one with the seal #2 on this diagram: RealOEM.com BMW E53 X5 3.0i Throttle Housing Assy, and another without this seal. My X didn't have the seal so there was nothing to be worry about except maybe the state of the seal which is located into a groove at the rear side of the throttle body housing, facing the intake manifold (this is a red/pinkish rubber seal). Of course, while you are at it, it worths to check the state of the intake boot (common place for cracks and air leaks) and to put some contact cleaner then dielectrical grease onto the throttle housing connector.
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Old 01-31-2010, 11:05 AM
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Quote:
Originally Posted by dpgx5 View Post
Just a question. Does the throttle body ever need any cleaning? If you open the butterfly and do a whipe around. As you mentioned though, would the butterfly be stuck as its electronic?
when i installed my intake i cleaned it. had a little coating of black crap.
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Old 01-31-2010, 03:56 PM
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Was there any noticable difference when the throttle body was cleaned?
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