Strange hum on start. - BMW Forum - BimmerWerkz.com
3-Series (E46, E90) Chat relating to the BMW 3-Series from 1999 to Current. Models include: BMW 316i, BMW 318i, BMW 318Ci, BMW 320i, BMW 323i, BMW 325i, BMW 330i, BMW 328 Ci, BMW 328i, BMW 325i/xi, BMW 330Ci, BMW 320d, BMW 330d, BMW 335d.

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#1 (permalink) Old 08-02-2004, 09:17 PM
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After i start my car the first time each day, theres always a very distinct hum of what sounds like pumps filling tubes or something.

I'm not very concerned with it unless I should be. Just sounds like the car warming up after sitting, but then again, I could be wrong. Usually lasts from 30 seconds to 2 or 3 minutes.

Someone care to enlighten me? =P

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#2 (permalink) Old 08-02-2004, 09:19 PM
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Run, it's going to self-destruct.
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#3 (permalink) Old 08-02-2004, 09:22 PM
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Quote:
Originally posted by komodo9@Aug 2 2004, 08:59 PM
Run, it's going to self-destruct.
it's been doing it for 2 weeks and i'm still alive. =)>

/pwnt.

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#4 (permalink) Old 08-02-2004, 09:25 PM
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Quote:
Originally posted by EcianIce+Aug 2 2004, 09:02 PM--></div><table border='0' align='center' width='95%' cellpadding='3' cellspacing='1'><tr><td>QUOTE (EcianIce @ Aug 2 2004, 09:02 PM)</td></tr><tr><td id='QUOTE'> <!--QuoteBegin-komodo9@Aug 2 2004, 08:59 PM
Run, it's going to self-destruct.
it's been doing it for 2 weeks and i'm still alive. =)>

/pwnt. [/b][/quote]
Russian roulette.... bimmer style.

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#5 (permalink) Old 08-02-2004, 09:29 PM
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Quote:
Originally posted by komodo9+Aug 2 2004, 09:05 PM--></div><table border='0' align='center' width='95%' cellpadding='3' cellspacing='1'><tr><td>QUOTE (komodo9 @ Aug 2 2004, 09:05 PM)</td></tr><tr><td id='QUOTE'>
Quote:
Originally posted by EcianIce@Aug 2 2004, 09:02 PM
<!--QuoteBegin-komodo9
Quote:
@Aug 2 2004, 08:59 PM
Run, it's going to self-destruct.*

it's been doing it for 2 weeks and i'm still alive. =)>

/pwnt.
Russian roulette.... bimmer style.

Tomorrow morning right before you turn the key in your car, think to yourself... "feeling lucky?"[/b][/quote]
CalliditasCastor (8:58:57 PM): ha
CalliditasCastor (8:59:35 PM): touché

indeed.

ok well. it's a bmw, so im trusting it NOT to explode in my face next time i start it.

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#6 (permalink) Old 08-02-2004, 09:34 PM
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Heh, knowing the German engineers, there is probably something programmed into the computer that checks for self-destruct sequences and flicks on check engine light before it blows up in your face.
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#7 (permalink) Old 08-02-2004, 09:37 PM
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well said.

when dinan, the only authorized 3rd party seller for bmw, says that they can't better the germans engineering, you know it's something special.

1st gear member, btw. /pwnt.

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#8 (permalink) Old 08-02-2004, 09:42 PM
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I'd hope so...when I fly down a road at 150, I'm putting a lot of trust into those damn germans.
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#9 (permalink) Old 08-02-2004, 09:54 PM
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I bet it is belt and tension pulley.
I had similar problem...
$250 in parts and 1.5 hour of labor
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#10 (permalink) Old 08-02-2004, 09:57 PM
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Quote:
Originally posted by Relevart@Aug 2 2004, 09:34 PM
I bet it is belt and tension pulley.
I had similar problem...
$250 in parts and 1.5 hour of labor
wuwu. non-off-topic post. =P

i'll have that checked.

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#11 (permalink) Old 08-03-2004, 01:30 AM
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What about the secondary air pump which runs for the 1st roughly 90 seconds on cold startup?????????? Normal dude.

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#12 (permalink) Old 08-03-2004, 04:16 PM
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i was gonna say secondary as well.

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#13 (permalink) Old 08-03-2004, 04:38 PM
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maybe its pcv crankcase valve used . I was having a noise evertime i started my car up and later it would quite down. Try opening your oil cap for just a second and see if the noise stops. This part for me at dealership was 45 dollars i thought i could replace it myself but its underneith the intake manifold long story short could not do it 350 dollars later at dealer it works fine no more noise. my 2 cents of rambling..

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#14 (permalink) Old 08-03-2004, 05:16 PM
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well. i know stuff runs on cold start, but this hasn't been happening since i've owned the car. oh well.

next time i take it in for anything i'll have them check it out.

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#15 (permalink) Old 08-03-2004, 05:24 PM
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Quote:
Originally posted by EcianIce@Aug 3 2004, 04:56 PM
well. i know stuff runs on cold start, but this hasn't been happening since i've owned the car. oh well.

next time i take it in for anything i'll have them check it out.
Yeah, get your system moved over from you're old car while you're at it.
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