1999 Sentra gxe, won't stay started (Valve assembly - control)

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I've Searched all that i could to find what this part does but it apparently has two names and while searching for both, nothing comes up.

First what happens is the car is very diffcult to start and when it does start it won't stay started. I had my friend first turn the key and found the Valve Assembly Contol was making a crackling noise. I first thought was this was a IAC, but upon more searching I found the part I need. http://www.courtesyparts.com/1....html

My question is; is this part really the source of my problem. I couldn't find a single thing related to this specific part.

Thanks in advance