2002 Mountaineer HVAC question

Reply Subscribe

Thread Tools

Search this Thread

Jan 29, 2011 | 05:40 PM

super 6.8

Thread Starter

Fleet Mechanic

Joined: Oct 2004

Posts: 1,394

Likes: 104

From: Southern KS

2002 Mountaineer HVAC question

We have a 2002 Mountaineer with the V6 and auto. Had it since new and it has been pretty much trouble free. One thing that bugs me though is the HVAC system.

First, the fan. On speeds 1-3 it doesn't move much air and when you put it on high, it is very, very loud (but does move more air). I don't remember it always being this way. Is this something wrong with the fan motor?

Second, when driving on the highway lately, you can feel a very cold draft coming from behind the glove box. You almost have to run the heater on high to stay warm. The air blows from where the selector says it should blow (defrost, hi/low, floor) but I can't believe how much cold air is coming into the cab area. When operating the position selector switch, i can hear things working like opening and shutting. Also, the air does get heated to what I think is a normal temperature. Its not like it's blowing lukewarm air for heat. Is some valve for outside air stuck open?

Any help would be appreciated.

Jan 29, 2011 | 08:13 PM

super 6.8

Thread Starter

Fleet Mechanic

Joined: Oct 2004

Posts: 1,394

Likes: 104

From: Southern KS

After a little searching, it appears that the fresh air door has fallen off and is laying on top of the blower motor.

How do you access this? Do you have to drop the blower motor?

Any help?

Thanks,

Jan 29, 2011 | 11:23 PM

steve(ill)

Hotshot

Joined: Jul 2005

Posts: 11,931

Likes: 180

no, take off the glove box door, take out the glove box... then you can see the fresh air door. It would be hard to fix, just push it forward toward the front to close it, and lock it there with a small rod or stick.....

Jan 29, 2011 | 11:26 PM

steve(ill)

Hotshot

Joined: Jul 2005

Posts: 11,931

Likes: 180

read the last couple posts.

https://www.ford-trucks.com/forums/1...-cold-air.html

Jan 29, 2011 | 11:28 PM

steve(ill)

Hotshot

Joined: Jul 2005

Posts: 11,931

Likes: 180

blower output sounds about normal.. low is about nothing. 2 is normal for driving around highway. i use 3 if you want to get things warmed up faster and want more volumn of air... 4 is too noisy and way too much air flow.

Jan 30, 2011 | 08:54 AM

super 6.8

Thread Starter

Fleet Mechanic

Joined: Oct 2004

Posts: 1,394

Likes: 104

From: Southern KS

Thanks for the reply Steve. I have tilted the glovebox down and I see the inlet grill. I can reach my fingers thru the grill and feel the unattached door just laying on top of the blower motor. I can move it around verifying that it's loose, but I can't pick it up. If I could just get under it, or pick it up, I would lay it against the firewall in the closed position and then use something to block it shut permanently. I just can't access it.

Any ideas?

Jan 30, 2011 | 05:44 PM

steve(ill)

Hotshot

Joined: Jul 2005

Posts: 11,931

Likes: 180

my door was still hanging on the hinge. On mine the cylinder bracket or cam was broken. I just took something like a popsickle stick with a notch on it, pushed it thru the grill, forced the door closed and pulled the "notch" down on the grill. If it was mine, i think i would cut the grill off, screw the door fixed into position, then glue or wire the grill or a screen back over the hole.... no one is ever going to see it !