AC only blows through defrost vents

CDRUCK

MEMBER
2001 FORD E-SERIES VAN
2WD
AUTOMATIC
140,000 MILES

Originally the AC compressor would not come on at all so I added some Freon from a can and it came on to the point where it started cycling on and off. Air only blows through the defrost vents and I know that could have something to do with a vacuum leak. But could it have something to do with the cycling? Should I add more Freon?

2 Replies

SCGRANTURISMO

MECHANIC
4,897 POSTS

Hello,

This could be a problem with your Defrost Actuator. If your actuator, through normal wear and tear, breaks, it will stay in the position it breaks in. I have included in the diagrams down below a link for you to go to.

https://www.2carpros.com/articles/air-vents-stay-in-the-defrost-position

Please go through the guide and get back to us with what you are able to find out.

Thanks,
Alex
2CarPros

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Thursday, May 16th, 2019 AT 12:51 PM

JIS001

MECHANIC
3,411 POSTS

Hello and thank you for using 2CarPros. I would agree with you CDRUCK that the problem is a broken vacuum line. Very common fault with Ford. You would need to trace the vacuum lines in the engine bay for a broken plastic vacuum line. The climate control unit also has a vacuum plug in the back to control the the air distribution. Worse case scenario the climate control head is defective but I am pretty sure if you look at all the plastic vacuum lines near the engine firewall you will find a broken vacuum line. Let us know what you find.

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Friday, May 17th, 2019 AT 12:21 AM