Complete Vacuum Diagram?
10-02-2017, 11:11 AM
#1
Melting Slicks
Thread Starter
Member Since: Nov 2013
Location: Greater Cincinnati Area.
Posts: 3,451
Received 335 Likes
on
295 Posts
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; 10-02-2017 at 11:15 AM.
10-02-2017, 11:56 AM
#3
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; 10-02-2017 at 11:59 AM.
10-02-2017, 05:13 PM
#4
Melting Slicks
Thread Starter
Member Since: Nov 2013
Location: Greater Cincinnati Area.
Posts: 3,451
Received 335 Likes
on
295 Posts
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.
10-03-2017, 04:36 PM
#7
Racer
Dont mean to hijack your thread, but would someone be able to direct myself to where I might find a said diagram for a 94 LT1, for HVAC and/or Engine Vaccum line routing?