Help with some lines?
Thread Starter
Junior Member
Joined: Jul 2017
Posts: 23
Likes: 2
From: Maryland
Car: 1991 Pontiac Firebird Trans Am GTA
Engine: 5.0 TPI
Transmission: 4 Speed Automatic
Help with some lines?
just trying to re do the top part if the intake manifold. If anyone has any diagrams of where all the lines connect and where they connect to the plenum as well as what hoses connect to the throttle body and where they come from? Thank you so much! Sorry but this is a learning process for me
Re: Help with some lines?
The widget that bolts between the coil and the intake is the EGR solenoid. The short tube goes to the EGR valve, the long one goes to the bottom of the throttlebody.
Edit: The 90* fitting is the vacuum feed to the HVAC system, it goes to T with the vacuum line to the vacuum reservoir/cruise servo. The other leg of the T goes to the plenum next to the MAP sensor and fuel pressure regulator.
No decal on the bottom of your hood?
Edit: The 90* fitting is the vacuum feed to the HVAC system, it goes to T with the vacuum line to the vacuum reservoir/cruise servo. The other leg of the T goes to the plenum next to the MAP sensor and fuel pressure regulator.
No decal on the bottom of your hood?
Last edited by Drew; Aug 6, 2017 at 11:36 PM.
