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-   -   E38 740i (1995) Annoying clapping sound coming from the dashboard (

sebek 05-16-2019 09:02 AM

E38 740i (1995) Annoying clapping sound coming from the dashboard
Could anybody please identify this annoying sound coming from the dashboard ? Feels like itīs something underneath the dashboard on the drivers side. The sound can be heard even when the engine is off as you can see in the video below. When I turn the ignition to the "pre-start" position (sorry I donīt know how it is called) the sound starts doing that clapping noise, when I turn the engine on, itīs still clapping. Sometimes itīs louder, sometimes itīs quiet and sometimes I canīt even hear it. Donīt you know what it could be ?
Thank you !

u.nanimous 05-16-2019 10:05 AM

Volume on full and I think I can hear it, but certainly not enough to tell you what it is.
Does it still make the noise if you turn the climate control completely off?

pascal32 05-16-2019 01:55 PM

Mind checking the heater valves behind the intake manifold against the firewall? The 98 I'm working on has heater valves with a mind of their own, not sure what is going

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