Well I just installed an Edlebrock RPM Q-jet manifold and I got a code 34 on the test drive. Haynes book says Vacuum Sensor Circuit. It says the possibilities could be wiring/connections at the ecm or the vacuum sensor. I doubt its has anything to do with the ecm so it must be the vacuum sensor. Where can I find the vacuum sensor? I have an 83 Z-28 with the carb'd lg4. I no longer have a egr valve with the new manifold, the line that went to the egr valve is plugged if that has anything to do with it. What do you guys think?

 

Hello Mike,
Your vaccuum sensor is located on the firewall near the drivers side. Check your e-mail.

 

Got it, thank you Will it hurt my car if I drive around with the code? My car will pretty much be down for the week except when I have to drop off/pick up my bro. Hopefully I will get it corrected today.

 

It shouldn't hurt it!!