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Need help, Hissing Noise coming from Engine when vehicle is off

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Old May 16, 2011 | 12:23 PM
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SheckyZ28's Avatar
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From: Georgia
Need help, Hissing Noise coming from Engine when vehicle is off

Drove one block to check on a neighbor’s dogs and heard a hissing noise when I arrived. Drove the 1994 3.0 4Runner home and the hissing noise was still going. It is coming from the passenger side, power steering area, but can’t pinpoint it anymore. It has been going on now for about 20 minutes. Any ideas????
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Old May 16, 2011 | 12:58 PM
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Nail in the tire? I know that's a dumb question but that's about the only thing other than noise from the rad if the engine overheats that I can think of that would make a hissing noise.

Last edited by Junkers88; May 16, 2011 at 01:00 PM.
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Old May 16, 2011 | 01:08 PM
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[GVIDEO][/GVIDEO]
Originally Posted by Junkers88
Nail in the tire? I know that's a dumb question but that's about the only thing other than noise from the rad if the engine overheats that I can think of that would make a hissing noise.
I thought that at first because that is exactly what it sounds like, but I checked the tire over and the noise is defiantly not coming from a tire.

I don't know if it may be something with the vacuum or a/c that make act different since I only drove it about a 1/4 mile.
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Old May 16, 2011 | 04:51 PM
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Starting to think it was a freon leak. Will find out tomorrow.
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Old May 17, 2011 | 05:22 PM
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Found the problem...

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Old May 18, 2011 | 04:59 PM
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What was it?
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