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Old 12-08-2020, 07:19 AM   #1
niallnz
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Default 2007 Focus noise after engine off

So the wife's 2007 Focus made this odd noise after turning off the engine. It went on for about 2minutes and stopped with solid clonk like a solenoid closing. 2litre petrol, no check engine lights, my thought was the idle control valve.

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Old 12-08-2020, 10:57 AM   #2
russellw
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Default Re: 2007 Focus noise after engine off

Can't playback the audio it just gives an error.
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Old 12-08-2020, 07:54 PM   #3
niallnz
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Default Re: 2007 Focus noise after engine off

I'll try again, hopefully the link work this time. Any thoughts on the source and/or course?

https://www.youtube.com/watch?v=uhf2tiGDv6g
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Old 13-08-2020, 08:15 AM   #4
Peter B - CV8
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Default Re: 2007 Focus noise after engine off

Not sure about the Focus - but quite a few cars are designed to do this. Pretty sure it's part of the fuel/emissions system ie fuel purge solenoid shutting off after it's done it's job.
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Old 14-08-2020, 06:58 AM   #5
niallnz
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Default Re: 2007 Focus noise after engine off

Thanks for the thought. It sounds like something is being modulated. For a evap/purge I would have thought that a valve would be held open and it would be pretty quite.
Cheers
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Previously 1991 EA II Fairmont Ghia, which was fun while it lasted, and in the dim dark distant past a Mk3 Cortina XL facelift, with the 2l pinto
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Old 15-08-2020, 08:54 PM   #6
ernie1
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Default Re: 2007 Focus noise after engine off

Fairly common for the drive by wire throttle motor to cycle after shutdown. They will occasionally do a self test but some do it more often for whatever reason. Feel for a slight vibration on the throttle motor when you can hear the noise.
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Old 16-08-2020, 01:07 PM   #7
leakey
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Default Re: 2007 Focus noise after engine off

Mine's not so loud, nor does it run that long! But I have a similar sound, but sounds more cool, like a little jet engine spooling down.
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Old 30-10-2022, 04:14 PM   #8
LTLXfocusCBR
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Default Re: 2007 Focus noise after engine off

Quote:
Originally Posted by leakey View Post
Mine's not so loud, nor does it run that long! But I have a similar sound, but sounds more cool, like a little jet engine spooling down.

+1

Feel like a jet pilot pulling in. 07 LT with 2L petrol
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