Buzzing noise (short) when turning off ignition? - Defender Source
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  #1  
Old May 1st, 2016, 09:17 PM
ckg
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Chander G.
1993 D110
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Buzzing noise (short) when turning off ignition?

Hi,

On my 110 I recently noticed that when I turn off the ignition there's a short (less than 2 seconds) buzzing noise that seems to come from under the car somewhere. Anyone know what that might be? It's definitely coming from some kind of thing with an electric buzzer...

This is a NAS 110 with an auto transmission (P38 I think) if that helps. 3.9L V8

thanks
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  #2  
Old May 2nd, 2016, 04:22 AM
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leastonce
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Jason England
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Quote:
Originally Posted by ckg View Post
Hi, On my 110 I recently noticed that when I turn off the ignition there's a short (less than 2 seconds) buzzing noise that seems to come from under the car somewhere. Anyone know what that might be? It's definitely coming from some kind of thing with an electric buzzer... This is a NAS 110 with an auto transmission (P38 I think) if that helps. 3.9L V8 thanks
It's the Air idle control valve being opened ready to start the car. It's the black solenoid valve in the rear of the plenum if you are interested in seeking it out.
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Old May 2nd, 2016, 09:58 AM
ckg
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Chander G.
1993 D110
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Quote:
Originally Posted by leastonce View Post
It's the Air idle control valve being opened ready to start the car. It's the black solenoid valve in the rear of the plenum if you are interested in seeking it out.
I get that when I turn on the ignition - the buzz is when I turn it off. almost like the buzz one would hear if the key were left in the ignition in an older model car (but it's not that..)
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Old May 2nd, 2016, 10:25 AM
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Jason England
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Some 14cux set the aicv on shut off
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Soapy water / KY jelly, etc. is is basically a must. Yes, good idea to remove trim panels - only takes 5 more minutes to do so.
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