Vacuum Leak
tblake
08-14-2012, 09:57 PM
Recently an annouying hissing sound started happening inside my dash. Its a vacuum leak for sure because I can unplug the line at the top of the supercharger that goes inside and the hissing sound goes away.
Whats Odd, as soon as I turn on anything HVAC, heat or AC, the hissing stops. Whats even more odd is everything with the HVAC works just fine, everything changes direction and the temp control works just fine.
I need to get the hissing to stop, its super annoying, It may be time to trade the old girl in. :crying: which is a shame after a new AC compressor accumulator orifice tube, rebuilt ABS module, and new rear calipers hoses and lines. :banghead:
Anyone have a Vacuum diagram for the HVAC inside the dash?
2000 Grand Prix GTP, 189,750miles.
Whats Odd, as soon as I turn on anything HVAC, heat or AC, the hissing stops. Whats even more odd is everything with the HVAC works just fine, everything changes direction and the temp control works just fine.
I need to get the hissing to stop, its super annoying, It may be time to trade the old girl in. :crying: which is a shame after a new AC compressor accumulator orifice tube, rebuilt ABS module, and new rear calipers hoses and lines. :banghead:
Anyone have a Vacuum diagram for the HVAC inside the dash?
2000 Grand Prix GTP, 189,750miles.
Tech II
08-16-2012, 07:38 AM
Vac wiring diagram is not going to help.....you need to go to each vac actuator, and find which one is leaking....
rickisrad
08-16-2012, 05:47 PM
This is all I could find, hopefully it helps
tblake
08-16-2012, 09:58 PM
Awesome Thanks. When I have time I'll have to dig into it. If it comes down to taking the whole dash out, its probably time to say goodbye.
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