Ok so I've been having lots of issues with my Camaro and I finally got some time to start digging around. I've found nearly the entire vacuum system is routed wrong. Some of it I know how it goes back together, but I need to know where the lower vacuum port on the passenger side of the TB goes, the one right under the CCV line. My car had a badly cracked and leaking plug on it.


Another question I have, would having things like the FPR and EGR connected to the wrong vacuum ports cause fueling and idle issues?

 

Is vac port for charcoal canister purge line

So long as they are seeing intake vac doesn't matter where vac it comes from

 

Thanks for the help, when I went back and looked at the diagram it made more sense. My FPR was plugged into the ported vacuum outlet on the bottom of the TB tho, which I think would cause some issue with idling. I almost have it replumbed and will know soon.

 

the egr valve is controlled by a vacuum solenoid that opens and closes the valve by commands of the ecm, putting a constant vac source on the egr may cause issues.

 

Well I think the EGR valve is stuck partially open. I can apply constant vacuum or no vacuum at idle and nothing changes.

 

I assumed he had the EGR solenoid and lines in place and was asking about the vac source for it