vacume line next to ECM
Thread Starter
Pro
Joined: Jun 2010
Posts: 535
Likes: 0
From: CA
vacume line next to ECM
1988 corvette. there is a vacuum line with some sort of valve on it next to (or below) the computer. does anyone know what this vacuum line goes to and what the valve is for? it looks like some sort of purge valve. if you lye on your back in the passenger foot well you can see the vacuum line above the passenger foot well/ under dash
Thread Starter
Pro
Joined: Jun 2010
Posts: 535
Likes: 0
From: CA
it looks like it comes from the firewall via wiring harness then goes into the clear rubber valve then the line disappears up into the dash somewhere. the reason Im asking is because i keep hearing a vacuum bleed off noise every now and then and its coming from that area.
Thread Starter
Pro
Joined: Jun 2010
Posts: 535
Likes: 0
From: CA
yes sir that is the line... when i switch for heater to defrost it makes the noise. my question is every now and then if everything is off and i will hear the valve purge not loud but a tiny bit. is this normal?
