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Air only comes through defrost and floor vents

Tiny
SURGEIMPULSE
  • MEMBER
  • 1994 FORD THUNDERBIRD
  • 199,000 MILES
I have been working on the blend door actuator recently and no air goes through the panel vents. Do I need to put in a replacement for it to start working again? I am currently waiting for the replacement to be delivered. I am also worried I might have damaged a cable or vacuum line.
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Monday, October 29th, 2018 AT 12:05 PM

6 Replies

Tiny
BMDOUBLE
  • MECHANIC
  • 1,139 POSTS
I would pay very close attention to the vacuum lines. Vacuum leaks are the primary reason for this concern on these vehicles.
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Tuesday, October 30th, 2018 AT 11:58 AM
Tiny
SURGEIMPULSE
  • MEMBER
  • 67 POSTS
Yes, the colored vacuum lines connected to the automatic climate control system are my biggest concern, as everything was working fine beforehand. I will go ahead and run down the lines, making sure there are no leaks or disconnections. There was a slight hissing sound before I worked on the car too when I would turn off the air or heat, so it may be time for new lines or ports.
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Wednesday, October 31st, 2018 AT 6:03 AM
Tiny
SURGEIMPULSE
  • MEMBER
  • 67 POSTS
I checked and as it turns out there is a yellow vacuum line that is not connected to anything, it is bolted down to hang next to the carpet. Is it supposed to just hang there and not be connected to anything? Maybe it is a intake hose or something.
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Thursday, November 1st, 2018 AT 8:12 AM
Tiny
STEVE W.
  • MECHANIC
  • 13,560 POSTS
Yellow is the line that goes to the defrost "motor" with it disconnected the door doesn't shut and the air all blows out the defroster.
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Thursday, November 1st, 2018 AT 4:13 PM
Tiny
SURGEIMPULSE
  • MEMBER
  • 67 POSTS
Luckily I found that out myself with some research. I pushed down on the "motor" with my finger and it changed the door position in the vents, bringing air through the panel. I just need to reconnect the yellow hose to the nipple at the end, and it should be working fine, thank you! This is what it looks like, for people having a similar issue.
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Friday, November 2nd, 2018 AT 9:41 AM
Tiny
STEVE W.
  • MECHANIC
  • 13,560 POSTS
Yep, reconnecting it should do the trick. Thank you for using 2CarPros. Return anytime with your automotive questions. We are here to help.
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Friday, November 2nd, 2018 AT 3:49 PM

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