PEA intake manifold: clicking noise(not lifters/ISC)

[KWY]

Hey guys. After replacing my rad I took the car for a spin and noticed a fairly loud ticking/clicking sound that would come and go. Sound was coming from the intake manifold area. My friend squeezed the line going to the "P" of the PEA on the intake and the sound went away. After letting go, the sound would come back.

Is it a vacuum line or something? What's causing this noise and how can I solve it?

Thanks!

(PS: searched around for the answer, didn't find anything specific. Apparently, only the 95-96 cars had a line going to the "P." The 97-on cars had the "P" blocked off. My car is a 95 Talon TSi AWD.)

 

[knochgoon24]

That is a vacuum line. I would start by replacing the hose. You may also want to replace all the vacuum hoses if you haven't done so already. If one has cracked, the others may soon.

 

[KWY]

Thanks man. I looked at the diagram, one way leads to a solenoid, and the other leads to the PCV. Could it have anything to do with that?