Vivaro, 2014: whistle sound when ignition is on

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Vivaro, 2014: whistle sound when ignition is on

Postby usawinters » Tue Dec 13, 2016 9:37 am

Hi, I have an Opel vivaro, 2014, ecoflex cdti.
2 days ago I started to hear a whistle sound which appears to be coming from the ventilation hole located under the driver seat. I can hear the sound only when the engine is hot.

The recording of the sound (MP3 file) is available here: https://drive.google.com/file/d/0B8OytKi-5sX4RjMyblUwem15WVBzYjNlaWoyYmRaODhYSlRv/view?usp=sharing

I will appreciate it very much if you could share your ideas on what could cause the issue.
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Re: Vivaro, 2014: whistle sound when ignition is on

Postby usawinters » Tue Dec 13, 2016 2:26 pm

In Addition to say the issue is reproducible after driving for about 15 minutes, stop the engine, start it again (or just ignition). Fan, heating, AC are off.
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Re: Vivaro, 2014: whistle sound when ignition is on

Postby Technician » Tue Dec 13, 2016 3:20 pm

Difficult to say exactly but it sounds like a squeaking fan belt to me.
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Re: Vivaro, 2014: whistle sound when ignition is on

Postby STC » Wed Dec 14, 2016 1:32 am

Is the 2014 Vivaro Blower Fan designed to run at a slow speed even when switched off by the driver ?

Interior Air Quality (Keep the Driver Awake) sensors .... ???

I don't know the answer but .... .... Pulling the fuse could reap rewards
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Re: Vivaro, 2014: whistle sound when ignition is on

Postby Mark Dalton » Wed Dec 14, 2016 6:54 am

Hmm, could be an after blow function. Does the Car have Air Con? Some GM products with Air Con. have an after blow function to dry out the evaporator after the Air Con. has been turned off. Stops the build up of mildew.
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Re: Vivaro, 2014: whistle sound when ignition is on

Postby usawinters » Wed Dec 14, 2016 8:08 am

STC wrote:I don't know the answer but .... .... Pulling the fuse could reap rewards

Thank you for this idea, I will try it.
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Re: Vivaro, 2014: whistle sound when ignition is on

Postby usawinters » Wed Dec 14, 2016 8:10 am

Mark Dalton wrote:Hmm, could be an after blow function. Does the Car have Air Con? Some GM products with Air Con. have an after blow function to dry out the evaporator after the Air Con. has been turned off. Stops the build up of mildew.

Yes, the car has AC, but I did not turn it on for at least last 3 months.
Thank you all for your support.
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