Ok , I have the headers all done and fixed the leak I had by the cat.I had the jeep running and it purrs like a kitten , but then I hear like a popping sound , tracked it down and it is coming from this thing , it looks like some kind of electronic vacuum control solenoid? It has a plug so it has power to it , and 2 hoses one goes to the throttle body , the other one I am not sure where it goes , it disappears into the front end by the radiator. The first pic shows where the bottom hose goes to on the TB , the second pic is the unit itself.I unplugged it and it stopped the popping it was making , so I don't know if this thing is supposed to do this or if it has gone bad , but it doesn't affect the jeep.








Oh , it sits bolted to the inner fender panel on the driver side near the air box.You can pull it up as it has a rubber mount that sits on the part bolted to the fender.If anyone with the 5.2 can take a look while their jeep is running and see if it makes any kind of noise so I know if this is normal or not it would be appreciated. I have no idea what it would fall under in the manual , so would be a pita to try and find.