Noise in engine bay?

2003 HUMMER H2
172,000 MILES • 6.0L • 4WD • AUTOMATIC
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BHAMDOC1
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After finishing the ac compressor replacement i hear this sound and not sure what it is. Whe i touch this oiece in the video i feel it.
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Aug 29, 2026 at 7:37 AM
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STRAILER
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It sounds like the AC compressor clutch is touching the hub. Can you confirm the compressor is working during this video or not?
Aug 31, 2026 at 8:24 AM
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BHAMDOC1
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Compressor works. What hub?
Aug 31, 2026 at 10:05 AM
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STRAILER
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So the compressor is engaged? The hub I am referring too is the compressor bearing hub. I would remove the drive belts and start the engine for a brief moment to see if the noise is gone.
Sep 1, 2026 at 4:22 PM
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BHAMDOC1
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The noise is coming from above the intake where i held my finger.
Sep 1, 2026 at 4:23 PM
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BHAMDOC1
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Here
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Sep 1, 2026 at 4:24 PM
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STRAILER
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Hmmm that is a good one, I have never heard that before. It can be the fuel pressure regulator, try unplugging it to see if the noise changes.
Sep 1, 2026 at 4:52 PM
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