Can anyone identify this vacum line - better photos
10-27-2007, 07:57 PM
#1
Drifting
Thread Starter
Can anyone identify this vacum line - better photos
T/s'ing an ocassional 'whistling' noise behind my red 95' 993 dash (especially when the a/c is on) I found this seemingly unconnected vacum line? Anybody seen it before on their car, if so does it actually connect to anything or does it simply hang free? (My black car has the same 'unconnected line) Two photos, first one shows general area, near the passenger side pollen filter housing. Second photo shows the line in questions and it is actually bundled in a gang of electrical wires. The white-colored vacum line goes to the right and finishes in an elbow into the top of an electical solenoid. That same solenoid has ANOTHER black vacum line that that attached to it in an elbow, but it is underneath and you can;t see it in the photo. The vacum line in question is just hanging out there with no place to intuitively go.
Last edited by Marlon; 10-28-2007 at 07:49 PM. Reason: clarity
Looking forward to the other pics.
10-28-2007, 09:27 AM
#4
Marlon
Check that it is not simply part of the same black vacuum line that goes into the connector (which is actually an electrically operated air solenoid that controls the vacuum operated bypass air flaps for the AC). It could have snapped off and pulled out of the loom. The black tube (going to the solenoid) is the vacuum source (equivalent to the electrical 'live') which is switched onto the white tube ('load') when the AC calls for the bypass flaps to operate. With the engine running, pull the black tube from the solenoid unit and check that there is vacuum present (tip of tongue is good detector). No vacuum - answer found, just join 'em back up. Vacuum present - ignore me and go back to drawing board.
Trevor
Check that it is not simply part of the same black vacuum line that goes into the connector (which is actually an electrically operated air solenoid that controls the vacuum operated bypass air flaps for the AC). It could have snapped off and pulled out of the loom. The black tube (going to the solenoid) is the vacuum source (equivalent to the electrical 'live') which is switched onto the white tube ('load') when the AC calls for the bypass flaps to operate. With the engine running, pull the black tube from the solenoid unit and check that there is vacuum present (tip of tongue is good detector). No vacuum - answer found, just join 'em back up. Vacuum present - ignore me and go back to drawing board.
Trevor
10-28-2007, 09:41 AM
#5
Drifting
Thread Starter
Marlon
Check that it is not simply part of the same black vacuum line that goes into the connector (which is actually an electrically operated air solenoid that controls the vacuum operated bypass air flaps for the AC). It could have snapped off and pulled out of the loom. The black tube (going to the solenoid) is the vacuum source (equivalent to the electrical 'live') which is switched onto the white tube ('load') when the AC calls for the bypass flaps to operate. With the engine running, pull the black tube from the solenoid unit and check that there is vacuum present (tip of tongue is good detector). No vacuum - answer found, just join 'em back up. Vacuum present - ignore me and go back to drawing board.
Trevor
Check that it is not simply part of the same black vacuum line that goes into the connector (which is actually an electrically operated air solenoid that controls the vacuum operated bypass air flaps for the AC). It could have snapped off and pulled out of the loom. The black tube (going to the solenoid) is the vacuum source (equivalent to the electrical 'live') which is switched onto the white tube ('load') when the AC calls for the bypass flaps to operate. With the engine running, pull the black tube from the solenoid unit and check that there is vacuum present (tip of tongue is good detector). No vacuum - answer found, just join 'em back up. Vacuum present - ignore me and go back to drawing board.
Trevor
mar