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  #1  
Old 01-05-2016, 09:41 AM
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Hissing sound from passenger side vent?

I have a hissing or breathy sound coming from the passenger side...maybe the area around the vent. Doesn't seem to be effected by rpms. Any ideas what this could be or where to start looking? It's an 82 300td
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Old 01-05-2016, 09:43 AM
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Have you got central locking that doesn't work?

Or are you getting confused with wind noise from a nadgered door seal?
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Old 01-05-2016, 10:20 AM
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My bet would be on a leaking vacuum pod... the rubber gets old and starts cracking.
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  #4  
Old 01-05-2016, 12:06 PM
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Not a door seal and no auto locks. Where in that area are there vacuum lines? Or "pods"?
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Old 01-05-2016, 01:25 PM
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Quote:
Originally Posted by adamkat22 View Post
Not a door seal and no auto locks. Where in that area are there vacuum lines? Or "pods"?
Well the only thing towards that side of a car in the cabin (LHD I hope!) could be air conditioning stuff but that's normally towards the centre of the car rather than right out by the door.

Other than that out side of the car vacuum lines for an automatic transmission - but could also just be wind noise from a hole in the front bulkhead under the battery tray...

...oh and it isn't something daft like an open passenger side vent that's normally closed is it?
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1992 W201 190E 1.8 171,000 km - Daily driver
1981 W123 300D ~ 100,000 miles / 160,000 km - project car stripped to the bone
1965 Land Rover Series 2a Station Wagon CIS recovery therapy!
1961 Volvo PV544 Bare metal rat rod-ish thing

I'm here to chat about cars and to help others - I'm not here "to always be right" like an internet warrior



Don't leave that there - I'll take it to bits!
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  #6  
Old 01-05-2016, 01:29 PM
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The fact that the noise seems to be consistent no matter what speed I'm going at makes me think a vacuum line would make sense. Also the shifting has been rougher than usual lately. The trans vacuum lines are down below the car though correct? Not anywhere near
The battery?
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Old 01-05-2016, 05:08 PM
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Remove the kick panel on the passenger side, start the car and listen for the sound, you should be able to find it.

This may take away enough vacuum to affect the transmission.
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