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		986 Forum - The Community for Porsche Boxster & Cayman Owners > Porsche Boxster & Cayman Forums > Boxster General Discussions
Loud hum from engine bay

Garage

07-27-2025, 07:29 PM	#1
Radar77 Registered User Join Date: Oct 2022 Location: Sunnyvale, CA Posts: 4	I guess this is a sign that I should upgrade to the bigger throttle 😆!

Old

07-27-2025, 08:03 PM

#2

Homeoboxter

Registered User

Join Date: Oct 2018

Location: North Cali

Posts: 842

Garage

Oh, it's the throttle body's actuator then. Probably you messed with its cable while working around the pump, shorted somehow or similar. Inspect the wiring harness and all cables in the surroundings of the area you have worked at.

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buzz , fuse 8b , fuse b8 , hum , noise

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