4.6L (1996-2004 Modular) Mustang Technical discussions on 1996-2004 4.6 Liter Modular Motors (2V and 4V) within.

Help me identify this boiling sound

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Old Jun 2, 2021 | 09:06 PM
  #1  
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crazyone64
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Joined: May 2018
Posts: 44
From: Ontario
Default Help me identify this boiling sound

Hi, I used my cell to record the prrrrrb / vibrate type sound, close to my K&N air filter.
Is this the sound of air in the cooling system which i recently topped off?
Could my filter need a replacement (i just recharged it)
Not sure if related, but i have a small leak in my condenser identified with the UV light and dye, but still have a/c and heat. I assume that's why my AC compressor is turning on/off, low refrigerant, but the clicking of the compressor matches the timing of the prrrrb sound.
Maybe defective heater core?

Please take a listen, i need help
2003 Mach1 4.6L v8
Attached Files
File Type: mp3
Voice 002.mp3 (1.94 MB, 27 views)

Last edited by crazyone64; Jun 2, 2021 at 09:24 PM.
Old Jun 3, 2021 | 05:15 PM
  #2  
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crazyone64
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Joined: May 2018
Posts: 44
From: Ontario
Default

I removed the Intake assembly and confirmed the sound is coming from the throttle body.
Anyone heard this before?
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