engine hissing noise [Archive] - GrandAmGT.com Forum

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dand2392
05-20-2009, 09:36 PM
i just realized a new noise in my engine today. it seems to be coming from right inside the middle of the engine. it is just a loud hissing noise. it sounds like somebody taking their tounge and just going tsssssssss. what could this be??

04GrandAM SC/T
05-20-2009, 09:41 PM
Sounds like its a vacuum leak. Check your purge silinoid. Its right by the throttle body and EGR valve.

dand2392
05-20-2009, 09:42 PM
what does a purge silinoid look like? i know where throttle body is



Sounds like its a vacuum leak. Check your purge silinoid. Its right by the throttle body and EGR valve.

04GrandAM SC/T
05-20-2009, 09:58 PM
its a little black module that has a horse shoe like vacuum line connect to it. It has a wire connected to it that should be a red pigtail. Just follow along after the throttle body. you should see it. its some what hard to describe.

meanse99
05-20-2009, 10:14 PM
yeah all you got to do is open the hood and look around for broken vaccum lines if you dont find any its prob a upper intake gasket thats blown out