Vent Trouble
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Junior Member
Joined: Nov 2004
Posts: 29
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From: Lawrenceville, GA
Car: Formula
Engine: 350
Transmission: Auto
Vent Trouble
For some reason the air only blows out of the defrost no matter where I put the ***. What could cause this?
Thanks
Shawn
Thanks
Shawn
Supreme Member
iTrader: (2)
Joined: Jul 2003
Posts: 3,205
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From: Dallas, TX area
Car: 91 Formula WS6 (Black, T-Tops)
Engine: 383 MiniRam (529 HP, 519 TQ - DD2K)
Transmission: Built '97 T56, Pro 5.0, CF-DF
Axle/Gears: 4.11 posi Ford 9"
1. A bad vacuum connection or cracked/broken vacuum hose under the dash or where it comes off by the EGR solenoid.
2. Bad check valve where the line comes off by the EGR solenoid
3. A bad vacuum dashpot under ther dash (there are like 3-4 or so of them under there)
4. A bad heater/defroster/AC control head in your dash (the thing you use to turn on AC/defrost/heat).
That should just about cover it..... not a fun job under our minimal clearance dashes.
2. Bad check valve where the line comes off by the EGR solenoid
3. A bad vacuum dashpot under ther dash (there are like 3-4 or so of them under there)
4. A bad heater/defroster/AC control head in your dash (the thing you use to turn on AC/defrost/heat).
That should just about cover it..... not a fun job under our minimal clearance dashes.
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Pac J
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May 17, 2020 10:44 AM
