Question about Cars & Trucks
SOURCE: Air intake tube?
This sounds silly but try using a piece of garden hose (or any other hose) held to your ear, using the free end as a probe. You will be able to pinpoint the source of the hissing noise and see what needs to be fixed.
Posted on Jul 09, 2009
Check your IAC motor (Idle Air Control) It could be sticking open.
Ps. Might be called Idle Speed Control motor it depends on the make and i forget what chevy calls theres.
Posted on Mar 11, 2010
fuel lines inside the intake plhenum may be cracked and leaking inside the plhenum. same thing happened to my 1992.sonoma. they are made of a plastic material and tend to crack right in the bend of these lines.
Posted on Mar 19, 2010
My car was doing this pretty bad and I changed the engine coolant temp sensor and it fixed my problem. Hope this helps!!
Posted on Mar 30, 2010
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