stang23456

My AC on my 99 XJ works fine however when turning on it's always doesn't blow at full speed and after a few minutes of running, I hear what sounds like a door open then it blows at full speed. Any ideas of what's wrong ?

Bbasso

vacuum leak.
Check my thread, I dealt with this recently.

MWildmann

I agree. Does the blend door open better when the engine is running faster/under load?

stang23456

Yes. Is this hard to fix ?

zimdogg

So I have an issue similar to this...

My AC blows real hard and cold when its not under much load, but when I start going up hills itll only blow out of the defroster, then when not under much load again itll start blasting from all the vents. Any ideas?

cashmoney11

I would say your vacuum canister is gone? Mine did same thing until I put a new vacuum canister in.

stang23456

This an expensive issue to fix ?

freegdr

look under hood at vacuum line for small crack or hole also check vacuum storage can behind front bumper pass side

zimdogg

What do you mean "gone"? Is this a pricey fix?

freegdr

no hit junk yard every vechicle has them if a xj cant be located search for similar size else where in the yard

zimdogg

Where are these on the vehicle? I'm not sure I even know what you're talking about.

RatchetMaster10

its a small black bottle located usually behind the front right corner of the bumper. has one vacuum hose going to it