help!! problem with the hvac blower.. just when its getting cold outside...
11-19-2007, 02:27 PM
#1
New Member
Thread Starter
Join Date: May 2007
Posts: 383
Likes: 0
Received 0 Likes
on
0 Posts
help!! problem with the hvac blower.. just when its getting cold outside...
figures. girlfriend's 1990 100's hvac blower stopped working recently, no matter what setting the electronic hvac control is set on. thing is, it sometimes comes on when turning RIGHT only.. then shuts right back off [only if its supposed to be on]
i havent the slightest idea wher to start, other than you guys.
any help is greatly appreciated.. it was 27degrees this morning....
i havent the slightest idea wher to start, other than you guys.
any help is greatly appreciated.. it was 27degrees this morning....
11-19-2007, 03:03 PM
#2
AudiWorld Member
Join Date: Nov 2000
Posts: 560
Likes: 0
Received 0 Likes
on
0 Posts
just deform the brush housing.
if you're lucky, it will help you make it through the winter.... worked for me.
I replaced the blower motor during the summer. got 4-5 months out of the trick.
I replaced the blower motor during the summer. got 4-5 months out of the trick.
11-19-2007, 03:10 PM
#3
AudiWorld Super User
Join Date: Apr 2003
Location: Full-time Utah skier now
Posts: 3,741
Likes: 0
Received 2 Likes
on
2 Posts
Re: help!! problem with the hvac blower.. just when its getting cold outside...
Blower motor is about to die on you completely if it only runs intermittently when you're turning.
If you remove the rain diverter at the bottom of the windshield, you'll see on the driver side of the heater core box an L-shaped rubber hose that loops between two parts of the box. The part closer to the driver fender is where the hose supplies cooling air for the blower motor. If you disconnect the hose from the box at that end, you can spray WD40 onto the motor and that might provide enough cleaning for brush contact to improve. Follow that with something that can provide a little lube (and doesn't smell too bad--because you'll be smelling it in the cabin for a week), and you might get the motor to run a little longer. I limped through one winter with an occasional squirt of a penetrating lube that included teflon until I could take time in the spring to replace the blower motor.
If you remove the rain diverter at the bottom of the windshield, you'll see on the driver side of the heater core box an L-shaped rubber hose that loops between two parts of the box. The part closer to the driver fender is where the hose supplies cooling air for the blower motor. If you disconnect the hose from the box at that end, you can spray WD40 onto the motor and that might provide enough cleaning for brush contact to improve. Follow that with something that can provide a little lube (and doesn't smell too bad--because you'll be smelling it in the cabin for a week), and you might get the motor to run a little longer. I limped through one winter with an occasional squirt of a penetrating lube that included teflon until I could take time in the spring to replace the blower motor.
11-19-2007, 03:54 PM
#4
AudiWorld Super User
Blower motor control unit.
See link for how to check.<ul><li><a href="http://www.sjmautotechnik.com/trouble_shooting/ac.html">http://www.sjmautotechnik.com/trouble_shooting/ac.html</a</li></ul>
11-19-2007, 06:32 PM
#5
New Member
Thread Starter
Join Date: May 2007
Posts: 383
Likes: 0
Received 0 Likes
on
0 Posts
that sounds easy enough to do in cold weather...
lack of a heated garage really sucks, but it needs to go in soon for a wheel bearing so hopefully i can find a replacement before then and have him do that at the same time.
the blower from my '86 4kq wont be needed for a while.. will that fit? or are they very different?
thank you so much!
the blower from my '86 4kq wont be needed for a while.. will that fit? or are they very different?
thank you so much!
11-19-2007, 09:19 PM
#7
New Member
Join Date: Apr 2006
Posts: 445
Likes: 0
Received 0 Likes
on
0 Posts
Re: that sounds easy enough to do in cold weather...
You can buy a new one from Autohausaz for $142. Or if your interested I am getting ready to pull the heater box out of my 200 and install a new heater core and blower motor. The blower motor in the car is good but I figured since I was in there to just replace it. You can have it for free just pay the shipping from Missoula, Mt. Can't imagine it would cost very much it's not very big or heavy. Email me if your interested.
Oh, and the 4000 blower motor is quite different.
Oh, and the 4000 blower motor is quite different.
Trending Topics
11-21-2007, 01:48 PM
#9
New Member
Thread Starter
Join Date: May 2007
Posts: 383
Likes: 0
Received 0 Likes
on
0 Posts
tossed some contact cleaner and electronics lube in there..
works more often now, but not always.. unless i whack the housing, then it works.
if i cannot find one locally soon, then i shall take you up on that offer.
thank you!
if i cannot find one locally soon, then i shall take you up on that offer.
thank you!
11-21-2007, 04:01 PM
#10
AudiWorld Member
Join Date: Nov 2000
Posts: 560
Likes: 0
Received 0 Likes
on
0 Posts
Re: just deform the brush housing.
oh, sorry.
in Kneale's post he talks about a "L" shaped hose.
if you pull it off and spray some lube in that hole, you'll also be spraying the brush housing.
basically, if you look into the hole, you'll see the brush tower containing the brush (a chunk of metal) and a spring. Just press down on the top of the brush tower so the spring perch gets deformed by 1-2mm. This action will hopefully push the brush down far enough to engage the motor and should be good for a few months.
hth,
Chi
in Kneale's post he talks about a "L" shaped hose.
if you pull it off and spray some lube in that hole, you'll also be spraying the brush housing.
basically, if you look into the hole, you'll see the brush tower containing the brush (a chunk of metal) and a spring. Just press down on the top of the brush tower so the spring perch gets deformed by 1-2mm. This action will hopefully push the brush down far enough to engage the motor and should be good for a few months.
hth,
Chi