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2004 - 2008 Ford F150 General discussion on the 2004 - 2008 Ford F150 truck.

A/C hiss

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Old Jul 6, 2009 | 10:23 AM
  #1  
fiasco's Avatar
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Default A/C hiss

After running the A/C and shutting off the truck, there is a loud hissing from the passenger side front of the engine that lasts about 15 seconds.

I got the truck back from the body shop after an accident on that corner.

Is this hiss normal or should I be taking the truck back to the body shop to look for additional damage to the AC system?
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Old Jul 6, 2009 | 11:10 AM
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Originally Posted by fiasco
After running the A/C and shutting off the truck, there is a loud hissing from the passenger side front of the engine that lasts about 15 seconds.

I got the truck back from the body shop after an accident on that corner.

Is this hiss normal or should I be taking the truck back to the body shop to look for additional damage to the AC system?
there is another thread about this now, it is the AC decompressing... perfectly normal after running your AC
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Old Jul 6, 2009 | 04:52 PM
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https://www.f150forum.com/f4/weird-noise-when-i-shut-down-hiss-air-being-expelled-26628/
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