1990 Firebird 305 TPI Vacuum Lines
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Joined: Jan 2022
Posts: 21
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From: Michigan
Car: 1990 Pontiac Firebird Formula
Engine: 5.0 Liter 305
1990 Firebird 305 TPI Vacuum Lines
Hi All,
I have some vacuum lines on my car that are not hooked up correctly due to a previous owner. I’ve looked for help in my service manual, but cannot find any information that helps. Currently, what I believe is the HVAC port on my plenum has no lines attached to it(in front of MAP sensor port and FPR port). I also have 2 hard lines on my passenger side near the firewall that are not connected to anything. Are these HVAC lines? The line that hooks to the top of my heater core valve runs to the driver side of the car. Is this supposed to connect to the 2 hard lines? Any insight would be appreciated.
I have some vacuum lines on my car that are not hooked up correctly due to a previous owner. I’ve looked for help in my service manual, but cannot find any information that helps. Currently, what I believe is the HVAC port on my plenum has no lines attached to it(in front of MAP sensor port and FPR port). I also have 2 hard lines on my passenger side near the firewall that are not connected to anything. Are these HVAC lines? The line that hooks to the top of my heater core valve runs to the driver side of the car. Is this supposed to connect to the 2 hard lines? Any insight would be appreciated.
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