G37 Sedan

Loud bang and liquid

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Old 09-01-2024, 02:19 PM
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gx37
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Loud bang and liquid

2010 g37x 165k miles.
Just another normal day driving all of a sudden give it a little gas, gear changes then loud bang. Pull over to see this leaking. Any idea what this is leaking from? Thank you
Old 09-01-2024, 04:42 PM
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socketz67
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What color is the liquid? That looks like the area where the condensation drains from the AC. Maybe the bang is not related?
Old 09-02-2024, 09:46 AM
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ILM-NC G37S
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Exact what socketz67 asked: what color is/ was the fluid?

Green or Blue = antifreeze/ coolant. Likely the heater hose coupling broke. When that plastic gives up a "bang" is often heard. Common issue with a relatively easy and inexpensive repair.

Red = transmission fluid. Highly unlikely a trans line broke.

Clear/ Water = AC evaporator drain = normal.

Give us more details and we can more accurately pinpoint the issue.

Last edited by ILM-NC G37S; 09-02-2024 at 10:54 AM.
Old 09-02-2024, 10:40 AM
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gx37
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Originally Posted by ILM-NC G37S
Exact what socketz67 asked: what color is/ was the fluid?

Green or Blue = antifreeze/ coolant. Likely the heater hose coupling broke. When that plastic gives up a "bang" is often heard. Common issue with a relatively easy and inexpensive repair.

Red = transmission fluid. Highly unlikely a trans line broke.

Clear/ Water = AC evaporator drain = normal.

Given us more details and we can more accurately pinpoint the issue.
Clear and odorless liquid. The loud bang was most concerning. Almost as if I ran over a tree branch and it ricochet underneath but not possible as this road was clear with no debris.
Old 09-02-2024, 10:54 AM
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ILM-NC G37S
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Clear and odorless - like water- is likely the AC drain. Perfectly normal.

Unless your car is exhibiting issues or has a problem I think your good to go.

As for the bang, ¯\_(ツ)_/¯, could have been a rock in the road.

Again, if the car runs fine then likely you'll be fine.
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