[CBG]

my ac will kick on, but will only come out the defrost vents, any ideas?

 

[Saleen Cougar]

i am also having a similer problem in when the selector is on regular a/c it only blows cold air out in spirts, but works fine on max a/c

 

[wadespencer99]

Predator is having the same problem...there is a post about it somewhere.

I suggested a vacuum problem, but he says he checked them all. I'm not sure if he ever got it fixed or not.

 

[andivoo]

I am having the same problems. Changed the blower resistor and nothing changed. Fuses are all ok and I know that it must be the vacuum. We are all looking for a solution; please help us FastCougar owners and contributors.

 

[CBG]

bump

 

[swbarlow]

Having the exact same problem here, anyone has a clue please post!

It actually used to start off in defrost and then slowly move to other settings, now it just stays in defrost vent setting

 

[swbarlow]

Ok solved mine. It was a rubbed/abbraded/burnt/melted vaccum line in the engine compartment that passes through the firewall. It is a grey line connected to a black line ( the black line passes the firewall)

Diagnosis: Removed glove box and then removed vacuum line comming in from engine ( see photo), placing thumb over end (with engine running) felt no vacuum, the let me know that it was in the engine compartment.

In the engine compartment- I traced the vacuum lines, the grey line ( center line on engine, on top, near firewall) comes off a "T" and provides the vacuum for the vacuum actuators in the cabin that move from defrost to other positions. . Upon inspection with a flashlight, I could see a darkened spot on the line about 4-5 inches down from the junction, that appeared to be melted, leaking etc.

Remedy: I cut the piece off, went to AutoZone, got some 1/8 " HVAC tubing and some conectors. I used that to patch the line. ( Word of caution, there was virtually no slack in the line, where you cut is where you will be mending, not a lot of space behind engine to force on a connector)

Result: Everything works fine, I can switch from defrost to panel and it works.

I have attached some images for reference.

 

[andivoo]

Thank you so much.

 

[wadespencer99]

Nice find and how-to!!

:thumbsup:

 

[Saleen Cougar]

:bowdown:

 

[PREDATOR]

I will work on this tomorrow, hopefully it solves the problem I've been having. I'll post back on any updates.

Thank you!

 

[CBG]

yes, thats a great how-to, im going to tackle mine tonight

 

[CBG]

well, i followed the directions and it worked, thank you soo much :-D