just curious, does anyone know what the humming/buzz is after you shut off the 1.9 tdi engine?
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t5 1.9 tdi Buzz/humm when turning off engine
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Originally posted by Umai Naa!! View PostIt's the vacuum system pressurising back to atmospheric.
Nothing to stress about. They all do it.
i drove a few 1.9s that never done this.
Richierich. in a 2.5, the n75 valve, perhaps called boost pressure regulator.(correct me if im wrong) can make the noise you describe. im not sure if the 1.9s have them but i guess they would.
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As Umai Naa! said, nothing to stress about. You can trust him, he is VW Audi tech.Performance Tunes from $850Wrecking RS OCTAVIA 2 Link
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Originally posted by Richierich View Postjust curious, does anyone know what the humming/buzz is after you shut off the 1.9 tdi engine?sigpic2011 T5 132kw 7spdDSG 4motion, '89 Citroen 2CV, 2006 Subaru Forester SG 5spd
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Originally posted by Umai Naa!! View PostIn your case it'll be the electric water pump and the oil pump in the DSG, after shutdown.sigpic2011 T5 132kw 7spdDSG 4motion, '89 Citroen 2CV, 2006 Subaru Forester SG 5spd
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