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mgm97
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• Broken Arrow, OK, USA |
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• Registered on 8/23/2009 |
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• 3 posts |
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 Posted:9/2/2011 05:34 |
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Latetly after shutting my car off I noticed what sounds like a vent door inside the dash moving.I checked the a/c/heating system and noticed that the air only comes out of the vents,it wont swtch to defrost or flloor settings when those are selected.Any ideas?. |
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wizzard1222
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• Ballwin, MO, USA |
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• Registered on 1/27/2011 |
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• 139 posts |
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Posted:9/2/2011 06:45 |
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Check for vacuum leaks from hoses that might be old, cracked or dislocated from any ports... 
Remember to check your fuse box....!!!!
Hope that's a starter.... |
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jdmeaux
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• Lafayette, LA, USA |
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• Registered on 1/5/2009 |
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• 525 posts |
• 1 Vehicle
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Posted:9/2/2011 08:07 |
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Over the years the vacuum hoses start rotting out and leaking, and dust and junk start to clog the contact areas that the vent doors touch, causing leaks. If worst comes to worst, you may have to pull the dash to get the plenum box to clean it out. MAJOR PIA! But it can be done. Just get a shop manual like Haynes and take your time, being sure to take pictures (if you have a digital camera) or sketches of were every goes. And DON"T FORGET TO LABEL all parts.
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PROUD MEMBER of www.crownvic.net
It's just a SUPER-DUTY Mustang GT Sedan. 198K miles and still rolling HARD.
1997 Crown Victoria P71 SVT *** ex-US Marshall service (the CAR)
STOCK?? I bet it was modified. 
13.26 @ 107.24 MPH 1/4 mi w/ me, tools, & full tank of 93 octane
I added CAI, NICHE 19 X 8.5 " wheels with 245/45ZR 19 rubbers, and completely rebuilt the front end with poly bushings, Kooks headers, 2 1/4inch exhaust, TCI 2200-2400 rpm Stall converter
.PLANS:: engine upgrade, 5.4L 2v stroker, rebuild interior in leather w/ buckets, thinking about turbos
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mgm97
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• Broken Arrow, OK, USA |
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• Registered on 8/23/2009 |
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• 3 posts |
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Posted:9/2/2011 09:55 |
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After I shut the car off I can hear hissing from under the dash,the moise appears to be coming from the L/H side oh the dash.Is this normal? |
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