W124 with Darth Vader breathing sound

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Christian Jonbech - 05 Aug 2004 10:39 GMT

Hi Group

Just got a 92, W124. When driving there is a breathing sound from the
engine room that comes regulary butt not in rytmic intervals. It sounds
like some kind of pump or valve that lets of pressure.
Can anyone explain what this sound is?

Thx.

Christian Jonbech

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John Mauel - 08 Aug 2004 15:56 GMT

> Hi Group
>
[quoted text clipped - 6 lines]
>
> Christian Jonbech

Kind of a 'ggsshhh' sound? It may be the 'freon' going through the air
conditioning plumbing in the dashboard.

John M.
"This is '94 E320"

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Tiger - 08 Aug 2004 23:13 GMT

Mmm... it can be the expansion valve... it is a metering device... but only
with A/C on... Never heard of this problem though.

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