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Old 31st October 2005, 01:43   #1
Kin Mak
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Noise from engine bay

Hi Guys

Just noticed recently that after I come back from a drive and switch off the engine there is a "motor" that seems to be running. It sound like it is under the part shown in the picture with the arrow. I go back to the car and I turn the ignition on and switch it off again and the noise goes away.

Anyone know what it is? Should it stay on? Should I get it checked? Thanks in advance.


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Old 31st October 2005, 04:24   #2
DavidS
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Re: Noise from engine bay

Quote:
Originally Posted by Kin Mak
Hi Guys

Just noticed recently that after I come back from a drive and switch off the engine there is a "motor" that seems to be running. It sound like it is under the part shown in the picture with the arrow. I go back to the car and I turn the ignition on and switch it off again and the noise goes away.

Anyone know what it is? Should it stay on? Should I get it checked? Thanks in advance.


I think it is your car telling you it wants you to drive it more! You need to satisfy its desire! ;-)

Seriously: if you donīt switch the ignition on and off again, how long does the motor keep running?

David
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Old 31st October 2005, 04:27   #3
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Re: Noise from engine bay

That is the heater control valve.... or in the case of the M5 there are two of them for the dual climate control.

No they should not stay on and by the example you shared I suspect a sticking solenoid or relay.

Takes care

Shadowman

Last edited by shadowman; 31st October 2005 at 04:28.
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Old 31st October 2005, 04:29   #4
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Re: Noise from engine bay

Quote:
Originally Posted by shadowman
That is the heater control valve.... or in the case of the M5 there are two of them for the dual climate control.

No they should not stay on and by the example you shared I suspect a sticking solenoid or relay.

Takes care

Shadowman
Is those valves supposed to operate after shutdown?

David
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Old 31st October 2005, 04:34   #5
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Re: Noise from engine bay

Quote:
Originally Posted by DavidS
Is those valves supposed to operate after shutdown?

David
No..... they are to shut down as the rest of the electronic's come to rest once the key is removed....... I do not recall whether they are a part of the delayed shut down in which case it would be a few seconds otherwise it should be immediate.

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Old 31st October 2005, 04:40   #6
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Re: Noise from engine bay

Quote:
Originally Posted by shadowman
No..... they are to shut down as the rest of the electronic's come to rest once the key is removed....... I do not recall whether they are a part of the delayed shut down in which case it would be a few seconds otherwise it should be immediate.

Shadowman
Then I think we can safely advice Kin Mak to have the dealer look into the matter.

Cheers,

David
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Old 31st October 2005, 05:23   #7
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Re: Noise from engine bay

I would have it checked, why run the risk of draining the battery. At $300 a battery it's not worth it.
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Old 31st October 2005, 17:40   #8
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Re: Noise from engine bay

Thanks guys will take it to the dealer.
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