hvac vac lines?
12-08-2009, 02:08 PM
#1
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Car: 1988 GTA
Engine: 305 tpi (LB9)
Transmission: WC T-5
Axle/Gears: 3.45 posi
hvac vac lines?
I had my radio out and went ahead and took my hvac contols out to replace a couple bulbs. I noticed that behind the hvac contols there are what appear to be two purple vacuum lines that have been cut about 6 inches behind the controls and plugged with screws. Anyone know what these are for?
12-08-2009, 10:55 PM
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Car: 1992 RS
Engine: Carbed 350
Transmission: 700R4
Axle/Gears: 3.42 posi
Re: hvac vac lines?
Depending on the location of the vent selector switch, the vacuum is run in different directions to open/close different vents.
BTW, I'm in Cary - we should hook up sometime!
BTW, I'm in Cary - we should hook up sometime!
12-08-2009, 11:06 PM
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Car: 90 z28
Engine: 355 with hsr
Transmission: t56
Axle/Gears: 3.73 posi
Re: hvac vac lines?
2 purple? mine has 1, but it goes to the motor. should have (gray black, orange, red, tan, blue and purple) mine's a 90 by the way so maybe you do have different colors. purple goes to something with the gray and then through the firewall by the distributor, then splits to a vacuum source and the vacuum tank
12-09-2009, 09:15 AM
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Car: 1988 GTA
Engine: 305 tpi (LB9)
Transmission: WC T-5
Axle/Gears: 3.45 posi
Re: hvac vac lines?
Ok I'll check it out and see if I can figure out what it is supposed to go to. Evertything works on my vent system except the a/c but I don't think that has anything to do with these vac lines. I'm just curious about what they are for.
12-09-2009, 09:17 AM
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Car: 1988 GTA
Engine: 305 tpi (LB9)
Transmission: WC T-5
Axle/Gears: 3.45 posi
Re: hvac vac lines?
Hey I think I might have actually got some firebird parts from you from craigslist. I remember the green 92 camaro with the implanted 350. I drive a black and gold T/A with the 305 tpi.
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