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Interior Noise - Like A Water Pipe Bang/Vibration

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5.0L (1979-1995) Mustang Technical discussions on 5.0 Liter Mustangs within. This does not include the 5.0 from the 2011 Mustang GT. That information is in the 2005-1011 section.

Interior Noise - Like A Water Pipe Bang/Vibration

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Old 08-31-2008, 11:46 AM
  #1  
VA5LMustang
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Default Interior Noise - Like A Water Pipe Bang/Vibration

1984 5.0L with a pipe bang/vibration/pumping sound in the interior on the passenger footwell/door area. Sounds like fluid moving through a pipe or hose that is vibrating.

Sounds is not related to engine speed and is most notable at idle. The sound changes in frequency, ramps up and down and goes away and then can come back. The sound comes and goes, hot/cold makes no difference. You cannot hear the sound outside of the car at idle. Recent exhaust conversion to duals made no differences so most likely unrelated to that change. Have grabbed hoses and other fluid lines and cannot seem to isolate the cause of the noise.

Any ideas?
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Old 08-31-2008, 11:50 AM
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mattdel
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heater core could be leaking into the HVAC box, or has become loose somehow and is whackin around in there.
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Old 08-31-2008, 11:54 AM
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calfroper_06
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plus 1 on the heater core
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Old 08-31-2008, 05:33 PM
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VA5LMustang
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Thanks. I will look there. I hear gettng to the Heater core can be a real pain!
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Old 08-31-2008, 08:55 PM
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projectresto83
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The 4 eyed cars are easier to get to than the 87+.
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