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mountainbiker
October 24th, 2007, 10:33
When I run the defrost, I can only run it on low (1). If I run the fan any higher, there is a "fwapping" noise almost as if something is closing and I can't get any air to come out of the vent. The fan still runs but it sounds as if air is being restricted.

I have a 1997 4.0L 5-speed.

Any input? It is getting colder every day!

-Matt

Blaine B.
October 24th, 2007, 12:12
You make a fun of Italians?

Hey, I'm about 30 minutes from ya.

MuckSavage
October 24th, 2007, 13:50
A vacuum line come off allowing a damper (door) to not stay in it's correct position?

mgreen84
October 24th, 2007, 16:59
my jeep has been like this from day one....I have traced all the lines and still nothing....maybe the ball under the bumper....or I think there was a TSB on the Door actuator one time.....I feel your pain brother!!!!!!!!! and it sucks!!

XJIDAHO
October 24th, 2007, 18:19
You make a fun of Italians?

Hey, I'm about 30 minutes from ya.


Actualy that is WOP not WAP, as in With Out Papers!! The only reason I know is my Grandfather from Sicily told me!! :laugh3:

Hawk
October 24th, 2007, 18:37
my 99 has been doing this for a long time, also. I hope you figure it out soon, so I can fix mine!

Blaine B.
October 24th, 2007, 20:15
Actualy that is WOP not WAP, as in With Out Papers!! The only reason I know is my Grandfather from Sicily told me!! :laugh3:

Damn, you're right. My uncle told me last time I was down at his place in southern Louisana about 6 years ago :yelclap:

Yucca-Man
October 24th, 2007, 20:34
Back on track again....

The 'fwapping' noise sounds like you have debris in the fan area. Does it ONLY make this noise when in Defrost, or is it in all positions? Along those lines...do the HVAC doors move through all settings and still flow air correctly? If so, it doesn't sound like a vacuum problem.

Jim www.yuccaman.com

mountainbiker
October 25th, 2007, 21:29
Yeah the noise comes only when in defrost. I can redirect the air to the top vents or floor if need be. I might look in to that recall.