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3-Series (E36) Chat relating to the BMW 3-Series from 1992-1999. Autodoodad Specific models include: BMW 316i, BMW 318i, BMW 318iS/ti, BMW 320, BMW 323, BMW 320, BMW 324, BMW 325, BMW 328.

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Old 06-06-2005, 10:56 AM   #1 (permalink)
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I've noticed this part under the hood and it was making a noise I hadnt noticed before and was wondering if anyone would like to shed some light as to what its function is.

heres a link to the part...its on the bottom of the page

http://www.realoem.com/bmw/partgrp.do?mode...501&hg=11&fg=50

the vehicle is a 98 328i auto trans

thanks
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98 328i ECIS CAI / Tint 35% / 17&quot; Gun-Metal Gray M Countour style wheels with Polished chrome lip and 235/40/17 Toyo Proxe T1-R's / Silverstar bulbs - head and fog

System - Calrion ProAudio HU / MB Quart RA 1000 Sub amp, RA 4200 4 ch amp / MB Quart PCE 213 5.25&quot; seperates front / JL Audio VR 6.5&quot; seperates in rear / Stinger SPDH5 Pro-Hybrid 5 farad Capacitor / Alpine Type X 12&quot; DVC Sub in a slot ported box
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Old 06-06-2005, 11:26 AM   #2 (permalink)
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Red face

The pump feeds the exhaust manifold fresh new air during startup. If its dead or dying it makes a whinning noise when you start the car on for a few minutes or seconds then shuts off. I got mine replaced (on e39), I would suggest you replace the hoses, valve, and the bracket thier pretty cheap while changing the air pump.

The link you provided shows the air pump, clamps, hoses, bracket, nuts and bolts. The picture shows the valve but has no # associated with it, click on 11 45 Vacuum control in the subgroup. Hope this helps.
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Old 06-06-2005, 08:04 PM   #3 (permalink)
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http://forums.bimmerforums.com/forum/showt...?threadid=92029
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Old 06-07-2005, 12:01 PM   #4 (permalink)
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I've got to do that to my car. Mine died this winter.
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Old 06-07-2005, 04:13 PM   #5 (permalink)
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Originally posted by wulley1@Jun 7 2005, 11:01 AM
I've got to do that to my car. Mine died this winter.
[snapback]351529[/snapback]
If mine is dead, would this cause difficulty starting on the first try?
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Old 06-08-2005, 04:34 PM   #6 (permalink)
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Thanks for the info guys, nice work
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98 328i ECIS CAI / Tint 35% / 17&quot; Gun-Metal Gray M Countour style wheels with Polished chrome lip and 235/40/17 Toyo Proxe T1-R's / Silverstar bulbs - head and fog

System - Calrion ProAudio HU / MB Quart RA 1000 Sub amp, RA 4200 4 ch amp / MB Quart PCE 213 5.25&quot; seperates front / JL Audio VR 6.5&quot; seperates in rear / Stinger SPDH5 Pro-Hybrid 5 farad Capacitor / Alpine Type X 12&quot; DVC Sub in a slot ported box
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