High pressure air noise

[boggsboxx]

Hi all I was driving on the motorway yesterday and out of nowhere came a high hissing sound like air was expelled or sucked in. I stopped to look for the cause and found nothing. Has anyone experienced this phenomenon with their T6 Cali 2018 with 150hp?



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[Meoncoast]

No
Any Gas left but Iam sure you would not hear leaking gas on the Motorway

 

[Bill R]

Just a guess - if gas from the struts that raise the roof escaped suddenly due to a fault you might hear that with it being above your head ?
Try raising the roof to see if all is ok with that maybe ?

 

[Hotel California]

What did you eat ...a bowl of that nice Dutch "erwtensoep" ?

Aircon maybe ?
Did it come from the front/engine side or the camping side ?
Was your fridge on ? makes noises ..
Probally nothing to worry about.
Welcome btw.

 

[Richard]

We recently had to have the intake manifold replaced on our T6 150 diesel, (flap valve stuck), we did not get the symptom you mention, but while reading around the subject online I came across posts mentioning the symptom you describe associated with intake manifold problems.