ronjones

but I haven't come across my particular problem.
Hi all, new guy, '96 4L, 4X4 w/a, recently installed, new/rebuilt Jasper engine, (less than 2000mi), 212000+ mi on body.
I've got a heat problem, similar to posts I've already read, but not quite. I get no heat or AC from any of the dashboard vents, but do have some air from the defroster...enough to warm the cab, slightly, on high. A couple of yr's ago I replaced the radio, at Best Buy. Sometime after that I noticed the problem. I can hear the blower work on all 3 settings and the cig lighter doesn't work. Last year I took it in to a shop to have some other repairs done and asked them to look at it. They said a vacuum line had come off. It seemed to have worked, somewhat, for a short time but ceased working. I've always presumed that, when the radio was replaced, they may have messed up something. Then there are the vacuum switches. I've got some back-yard mechanics skill, but really don't know anything about all the vacuum and computer stuff on the more modern cars. I do have a ODBII reader, but nothing is tripped there.
Any thoughts or direction would be appriciated.
Thanks
Ron

98 JeepJeep

If the blower only works on defrost you have a HVAC vacuum leak some where. Defrost is the Default setting...

doaxj

please excuse my terminology here becuse i know what im talking about but dont know the actual names for the part lol. mines did thie same thing about 2 months ago and it was indeed a vacum leak. mine was at the round ball canister thing located in the bumper on the passenger side. i fixed it and it works like a champ. hope it helps

98 JeepJeep

vacuum canister...is what that is.

jeepxj412

Doaxj how did you fix yours because mine is leaking around the same spot

ronjones

Thanks for the replies,
Sounds like my problem is a vacuum leak, possibly near the ball on the fender.