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Member 911 Anonymous
Join Date: Sep 2007
Location: Rancho Palos Verdes
Posts: 14,329
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Buzzing means a fouled up Ambient Control Valve (ACV) or worse a fracture in the ACV or Hoses causing a leak. Time to replace ACV, Bracket and/or 2 Hoses (1 hose is NLA, need to mod one).
Rehabbing the OEM ACV is the other option.
Once I rehab, I will document and post pics. If rehab fails I wil replace the ACV and try to salvage the hoses if possible.
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'85 Carrera Targa
Factory Marble Grey/Black * Turbo Tail * 930 Steering Wheel* Sport Seats * 17" Fuchs (r) * 3.4 * 964 Cams * 915 * LSD * Factory SS * Turbo Tie Rods * Bilsteins * Euro Pre-Muff * SW Chip on 4K DME * NGK * Sienes GSK * Targa Body Brace
PCA/POC
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