1999 Ford Windstar air flow vents

ASTROBILL

MEMBER
1999 FORD WINDSTAR
V8
FWD
AUTOMATIC
118,000 MILES

The temperature control device failed and I replace it. It is now working fine, however, the air flow control which changes the various air vents has stopped working. I can't find anything in the Haynes manual. It was working before I replaced the temperature control device. The knob that usually controls the airflow direction will turn the blower motor off, but not control the direction.
The blower motor speed control is working, and all of air is going through the windshield defrost vent. Could this be a fuse. I am unable to locate the device that changes the airflow direction.

3 Replies

JACOBANDNICKOLAS

MECHANIC
109,755 POSTS

Actually, in this case you are looking for a vacuum leak. THe vent actuators are run by engine vacuum. My guess is when you were working on it, you bumped one of the vacuum lines and it fell off or broke. Check under the dash and recheck your work to see if you can find the problem. If you have the engine running, you may actually be able to hear a hissing sound from the leak to help you find it.

LEt me know if you have other questions.

Joe

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Monday, December 7th, 2009 AT 11:12 PM

ASTROBILL

MEMBER
2 POSTS

Thank you so much for the help. The vacuum connector had fallen behind and under the front panel assembly structure. It was covered with a gray foam cover which looked like a piece of insulation. I was looking for an electrical connector, and I didn't recognize the vacuum plug-in on the back of the front panel controller.
Hooray! Its all working fine now!

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Tuesday, December 8th, 2009 AT 11:37 AM

JACOBANDNICKOLAS

MECHANIC
109,755 POSTS

That is great! I'm glad you found it, and have a great Christmas!

Thanks for using 2carpros. Com and if you have other questions in the future, let us know.

Joe

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