Complete Vacuum Diagram?
Thread Starter
Melting Slicks
Joined: Nov 2013
Posts: 3,451
Likes: 336
From: Greater Cincinnati Area.
Complete Vacuum Diagram?
I'm looking in the FSM and I see two. An engine performance diagram and an HVAC diagram, and it doesn't show where they come together?
For example: They both show the vac tank.. But there's only one tank? There is a vac check valve.. There's only one on the car, right?
Where and how do these two systems intersect? Am I missing something?
For example: They both show the vac tank.. But there's only one tank? There is a vac check valve.. There's only one on the car, right?
Where and how do these two systems intersect? Am I missing something?
Last edited by confab; Oct 2, 2017 at 11:15 AM.
Team Owner
Joined: Sep 2003
Posts: 25,406
Likes: 2,744
vacuum to the check valve for the inside AC controls is done through the "pass-through" that includes the ECM harness on earlier cars. It should be quite obvious. If you check the "pass-through" under hood you should find the hose in the harness. Can you put "hands on" to the check valve on your car. You don't mention year so it's difficult to mention more - is your check valve possitioned as the FSM suggests?
Last edited by WVZR-1; Oct 2, 2017 at 11:59 AM.
Thread Starter
Melting Slicks
Joined: Nov 2013
Posts: 3,451
Likes: 336
From: Greater Cincinnati Area.
vacuum to the check valve for the inside AC controls is done through the "pass-through" that includes the ECM harness on earlier cars. It should be quite obvious. If you check the "pass-through" under hood you should find the hose in the harness. Can you put "hands on" to the check valve on your car. You don't mention year so it's difficult to mention more - is your check valve possitioned as the FSM suggests?
I bought a check valve because it doesn't have one right now.
Nothing in the harness. PO stripped all of that out, and I have basically nothing original.
