hvac vacuum sourse
Thread Starter
Heel & Toe
Joined: Dec 2023
Posts: 20
Likes: 0
hvac vacuum sourse
trying to fix my hvac system and i have no vacuum at the module, i'm pretty sure that vacuum comes off of the motor at the tee fitting that i replaced. my question is the does the hvac come off of the branch of the tee or the run or the through port?
Le Mans Master
Joined: Jan 2006
Posts: 5,621
Likes: 206
From: Orlando FL
What year car?
When you say module do you mean programmer?
Basically need to check hoses to the cruse servo, and brake pedal cut off hard line hose, and rubber hoses and look for a crack or break.
There should be vacuum at the T from the engine.
When you say module do you mean programmer?
Basically need to check hoses to the cruse servo, and brake pedal cut off hard line hose, and rubber hoses and look for a crack or break.
There should be vacuum at the T from the engine.
Safety Car
Joined: Jun 2010
Posts: 4,564
Likes: 1,676
Vacuum source is the intake manifold. From there it going the wire harness and passes through the firewall at the center bulkhead. It has a connection underneath the passenger side of the dash and joins the AC vacuum harness.
Get a vacuum pump and connect at the fitting at the intake and see if you can hold vacuum. Work your way to the next connection point until you find your leak.
Get a vacuum pump and connect at the fitting at the intake and see if you can hold vacuum. Work your way to the next connection point until you find your leak.
Melting Slicks
Joined: May 2003
Posts: 2,078
Likes: 282
From: Dyersburg TN
