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Hissing Noise from engine bay when car is off

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Old 05-01-2016 | 11:38 PM
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Default Hissing Noise from engine bay when car is off

Hey Guys,

Today when I shut off my car I noticed a hissing sound coming from the engine bay. Checked around for vacuum leaks but didnt see anything.

Any idea what this may be?
Old 05-01-2016 | 11:53 PM
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I also just had the coolant lines welded two weeks ago.
Old 05-03-2016 | 01:19 AM
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The little spring flap on top of coolant tank. Flip that up. Leave it up for a while. Check coolant level a few times. Could be air bubble. Also mine makes a gurgling noise. It's oil going back to sump.

Check while running and hot ensure bk seepage on any coolant lines.
Old 05-03-2016 | 01:22 AM
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Originally Posted by Spyerx
The little spring flap on top of coolant tank. Flip that up. Leave it up for a while. Check coolant level a few times. Could be air bubble. Also mine makes a gurgling noise. It's oil going back to sump.

Check while running and hot ensure bk seepage on any coolant lines.
Thanks,

I actually drove the car around the block today to see what it was and I ended up finding where it was leaking from. I have no idea what this is this but there is some fluid leaking from the bottom of it and I can feel the air coming out of it.

Any idea of what it is?

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Old 05-03-2016 | 01:48 AM
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Ac line
Liquid would be the oil in the line.
Gas is refrigerant
Old 05-03-2016 | 11:21 AM
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Originally Posted by Spyerx
Ac line
Liquid would be the oil in the line.
Gas is refrigerant
Thank you!
Old 05-04-2016 | 09:03 AM
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I just had the O ring in that line replaced on my car, must be a common place to leak.
Old 05-04-2016 | 12:00 PM
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Originally Posted by agentf1
I just had the O ring in that line replaced on my car, must be a common place to leak.
Seems to be that way from my research. Car is heading in for replacement of O ring and recharge.
Old 08-09-2016 | 12:31 AM
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Originally Posted by MKIVdan
Seems to be that way from my research. Car is heading in for replacement of O ring and recharge.
Ugh... you should have texted me. I paid $1500 to have the O-Rings replaced and AC recharged right before you bought it from me. The AC was fine then after a drive it didn't work. Obviously the fix that Porsche Fremont did wasn't effective
Old 08-09-2016 | 01:14 AM
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Originally Posted by KOTYKB
Ugh... you should have texted me. I paid $1500 to have the O-Rings replaced and AC recharged right before you bought it from me. The AC was fine then after a drive it didn't work. Obviously the fix that Porsche Fremont did wasn't effective
Ahh, now I remember you telling me that last year.

Everything is working great now and the repair was relatively inexpensive.



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