Vacuum leak - ZR-1 Net Registry Forums

MuRCieLaGo · 11-30-2015

Hi,

My '91 ZR-1 got a vacuum leak. Key on, the vacuum pump turns on every seconds or so.

-Blocked the vacuum port directly on the pump - stops running (so the pump is fine).
-PCV valve was loose so I fixed it by installing vinyl sleeves.
-I tightened a lot of hoses - most of them were loose.

I'm very afraid of pulling the plenum now. Especially because I don't want to spread antifreeze everywhere.

Can I say goodbye to my vacuum problem if I remove the secondary system? If I do so, I will order a chip from Haibeck. Will I be able to switch to normal mode or I will be locked to Full Power?

11-30-2015	#1
MuRCieLaGo Join Date: Aug 2014 Location: Trois-Rivieres (QC) Posts: 473	Vacuum leak Hi, My '91 ZR-1 got a vacuum leak. Key on, the vacuum pump turns on every seconds or so. -Blocked the vacuum port directly on the pump - stops running (so the pump is fine). -PCV valve was loose so I fixed it by installing vinyl sleeves. -I tightened a lot of hoses - most of them were loose. I'm very afraid of pulling the plenum now. Especially because I don't want to spread antifreeze everywhere. Can I say goodbye to my vacuum problem if I remove the secondary system? If I do so, I will order a chip from Haibeck. Will I be able to switch to normal mode or I will be locked to Full Power? Last edited by MuRCieLaGo; 11-30-2015 at 03:44 PM.