Odd noise
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New User
Joined: Nov 2010
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Odd noise
Ok, so today i just noticed an odd noise under my hood after i shut my truck off. I drove it maybe 25 miles, so it was warm, but when i parked it i decided to lift the hood for the heck of it. I noticed that it sounded like stuff was boiling. Ive never heard of something boiling after driving your vehicle so i thought id check to see what you guys had to say about it. any advice it helpful. thanks!
Lead Driver
Joined: Sep 2007
Posts: 8,180
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From: Scio, OR
You may be describing refrigerant from the A/C high pressure side bleeding through the orifice into the low pressure side, where it boils into a gas. That could be described as a boiling sound.
Try driving the truck for awhile with the heater control in the OFF, VENT or FLOOR positions (the only positions where the A/C compressor doesn't run) and see if it still does that.
Try driving the truck for awhile with the heater control in the OFF, VENT or FLOOR positions (the only positions where the A/C compressor doesn't run) and see if it still does that.
