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4.6L Lincoln TC noise when engine is OFF
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CarGuru > Technology > 4.6L Lincoln TC noise when engine is OFF 2 February 2005 23:20:03

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4.6L Lincoln TC noise when engine is OFF

Guest 2 February 2005 00:58:47
 I have a '99 Town Car, 4.6L. Periodically when the engine HAS BEEN OFF
for a while, there will be what sounds like a whirring or buzzing sound
that lasts 5-10 seconds. By chance I was able to approximate where it
was coming from one day when the hood was up... sound was coming from a
compartment between the air filter box and driver's side headlight.
What the heck is this and what does it mean?

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Sdlomi2 2 February 2005 02:33:18 permanent link ]
 
<safechecker@netsca­pe.net> wrote in message
news:1107291527.775­952.263000@c13g2000c­wb.googlegroups.com.­..> I have a '99 Town Car, 4.6L. Periodically when the engine HAS BEEN OFF> for a while, there will be what sounds like a whirring or buzzing sound> that lasts 5-10 seconds. By chance I was able to approximate where it> was coming from one day when the hood was up... sound was coming from a> compartment between the air filter box and driver's side headlight.> What the heck is this and what does it mean?>
Level ride compressor. s


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Mike Behnke 2 February 2005 02:55:22 permanent link ]
 sdlomi2 wrote:
<safechecker@netsca­pe.net> wrote in message> news:1107291527.775­952.263000@c13g2000c­wb.googlegroups.com.­..>
I have a '99 Town Car, 4.6L. Periodically when the engine HAS BEEN OFF>>for a while, there will be what sounds like a whirring or buzzing sound>>that lasts 5-10 seconds. By chance I was able to approximate where it>>was coming from one day when the hood was up... sound was coming from a>>compartment between the air filter box and driver's side headlight.>>What the heck is this and what does it mean?>>
Level ride compressor. s>
Which should not run when the ignition is OFF.
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Bob 2 February 2005 04:05:30 permanent link ]
 
"Mike Behnke" <behnke@fnal.gov> wrote in message
news:ctp13l$cpt$1@i­nfo4.fnal.gov...> sdlomi2 wrote:>
<safechecker@netsca­pe.net> wrote in message>> news:1107291527.775­952.263000@c13g2000c­wb.googlegroups.com.­..>>
I have a '99 Town Car, 4.6L. Periodically when the engine HAS BEEN OFF>>>for a while, there will be what sounds like a whirring or buzzing sound>>>that lasts 5-10 seconds. By chance I was able to approximate where it>>>was coming from one day when the hood was up... sound was coming from a>>>compartment between the air filter box and driver's side headlight.>>>What the heck is this and what does it mean?>>>
Level ride compressor. s>>
Which should not run when the ignition is OFF.

The suspension stays active for something like 30 minutes after the key is
turned off. It sounds like normal operation to me.
Bob


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Ed 2 February 2005 21:56:01 permanent link ]
 the Lincoln I have does the same thing.


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Comboverfish 2 February 2005 23:20:03 permanent link ]
 
safechecker@netscap­e.net wrote:> I have a '99 Town Car, 4.6L. Periodically when the engine HAS BEEN
for a while, there will be what sounds like a whirring or buzzing
sound> that lasts 5-10 seconds. By chance I was able to approximate where
was coming from one day when the hood was up... sound was coming from
compartment between the air filter box and driver's side headlight.> What the heck is this and what does it mean?

Chiming in late...

Yes, it is your rear suspension pump assembly doing its job. It is
located under the hood. They do operate with the key off - its
leveling the car after you get out of it. It takes about 10 seconds to
decide that the ride level has changed long enough to require
compensation. Be thankful that yours works, because they have a pretty
high failure rate.

Toyota MDT in MO

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CarGuru > Technology > 4.6L Lincoln TC noise when engine is OFF 2 February 2005 23:20:03

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