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95 subaru legacy heater/AC wont work
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mosinmatt
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Jan 31, 2010, 12:48 PM
Post #1 of 20
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95 subaru legacy heater/AC wont work
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95 Subaru Legacy
I do not know the engine size off hand
normally the front vents did not work. The defroster worked just fine.
This morning I find that none of the vents work. When I turn the dial to turn it on, nothing happens. I hear a small "click" when I turn it on, that is about it.
EDIT: I checked the fuzes for the A/C in the two fuze boxes I saw. None were blown. There were for A/C relays, but I do not know anything about them.
(This post was edited by mosinmatt on Jan 31, 2010, 1:09 PM)
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Tom Greenleaf
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Jan 31, 2010, 1:46 PM
Post #2 of 20
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Re: 95 subaru legacy heater/AC wont work
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Generally speaking as I don't know the ins and outs of this car well: Most all will default to defrost ducts. Cars do adjust the direction of air thru the ductwork and blend the temp via flaps inside actuated by either vacuum from the engine or via electronic actuators. Sometimes a combo of both. For now, look for a broken vacuum line heading for the firewall. Some vacuum lines will be plastic like the spray tube for carb cleaners or could be a rubber hose. It's easy to break either or have one fail.
If you find a break - it can be spliced with rubber hose (if a vacuum actuated system) and take a small piece with you to a real parts store to get a section of hose as needed to be snug enough to not just fall off,
T
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mosinmatt
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Jan 31, 2010, 1:54 PM
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Re: 95 subaru legacy heater/AC wont work
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Where in the world would I check for that?
I can KIND OF, just every so barely tell it is at least trying to work. The side vents have a very tiny trickle of air it seems.
Te front ones never worked to begin with, and normally when I tried to change vents, there would be a "clunk". Which doesnt happen now.
I am going to get a multimeter later and try to test them.
I just hope I dont have to tear the thing apart. I have work tomorrow morning.
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mosinmatt
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Jan 31, 2010, 2:07 PM
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Re: 95 subaru legacy heater/AC wont work
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hmm. It is working again
I went down, and I kept changing the vent selection. It kept going thunk. Then it suddenly started working. Maybe som eice had gotten on it?
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Tom Greenleaf
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Jan 31, 2010, 3:25 PM
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Re: 95 subaru legacy heater/AC wont work
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If it's working - don't argue with it! It's near impossible to fix what 'ain't broken. Flap sounds as the diverter doors move is normal for some cars. They are like choke plates with ends that will seal fairly tight and certainly could stick. The electric actuators can strip gears and vacuum operated ones can leak or the source for vacuum is impaired or plain cut off. Most vacuum operated doors/flaps will work one more time even with engine off and all is quiet you might hear some hissing of them working as well.
I'm not working so don't have the big buck software to show you the layout of how your exact car is done but near all use similar methods and some plain cables to move those doors.
If it goes out on you again hit back and we'll dig into what's what and where to look for a problem. The slight pant of air to side windows and even some will leak to defrost outlets while asking for just floor vents - all normal.
If it's working now there's not going to be much to find. Stay warm,
T
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mosinmatt
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Feb 6, 2010, 2:48 PM
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Re: 95 subaru legacy heater/AC wont work
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Hello again! Seems to be happening again! I am actually off to check the relays and all that.
I also noticed that the lights on my parking shifter wont light up (park, drive, etc)
SOmetimes it wont start, but clicking the buttons seems to make it work. Not today though!
I will report back soon.
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mosinmatt
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Feb 6, 2010, 7:15 PM
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Re: 95 subaru legacy heater/AC wont work
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Well, it was pretty easy. There was this device under the glove box (something that goes to the heater motor). We just gave it a lite push and all was good.
I think a passenger may have hit it with his feet and knocked it loose?
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Tom Greenleaf
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Feb 7, 2010, 2:46 AM
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Re: 95 subaru legacy heater/AC wont work
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Kewl! Seems like this uses an electric actuator remote to the door it turns. Nice that it's accessible but shouldn't be so easy to hit it with a foot? Oh well, at least you've found it. Some items require such "dash diving" it's like an automotive autopsy!
T
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mosinmatt
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Feb 7, 2010, 11:40 AM
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Re: 95 subaru legacy heater/AC wont work
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Way under the glove box, almost where someones feet would be if they had their legs stretched out in the passenger seat. I forget the name my dad called it. But it was apart of the heater fan, or blower or something. If it stops again I will have to take a closer look.
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Tom Greenleaf
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Feb 25, 2010, 11:35 PM
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Re: 95 subaru legacy heater/AC wont work
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This is done/over - he said that! We don't need an echo of a done deal. Thanks anyway but read the thread,
T
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mosinmatt
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Mar 1, 2010, 11:50 AM
Post #11 of 20
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Re: 95 subaru legacy heater/AC wont work
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Hello again all!
Well, the problem is a bit persistant. The device I mentioned earlier, under and behidn the glove box is what seems to be the problem. If I give it a little "tough love" it will blow slightly. I can hear a noise like a fan clicking as it turns as well.
I assume this is what needs to be replaced. I am just not sure what it is called.
Any help on the name? Id like to get it fixed this week (hopefully the part is cheap) I can install it myself with some family help.
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Tom Greenleaf
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Mar 1, 2010, 12:29 PM
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Re: 95 subaru legacy heater/AC wont work
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Just searched for a name other than "actuator" which didn't show a part - not surprised. You may do well to go to Subaru and point out on their parts screen what item you are messing with and get their name for it. It would (at dealer) show the diagram of the assorted parts and name them I hope.
Common names can be local slang. "Actuator Motor" - "Diverter Door" are a couple that should get to the area,
T
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mosinmatt
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Mar 1, 2010, 12:42 PM
Post #13 of 20
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Re: 95 subaru legacy heater/AC wont work
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I think it may be the blower motor. I looked on ebay, and it looks like the part I need. I will look into it a little more.
EDIT: http://cgi.ebay.com/ebaymotors/97-98-99-Subaru-Impreza-Heater-Blower-Motor-w-Fan-Cage_W0QQitemZ310203903429QQcmdZViewItemQQptZMotors_Car_Truck_Parts_Accessories?hash=item483997edc5
I think it is this part. But the one I am lookin gto buy (if I cant find better) is:
http://cgi.ebay.com/ebaymotors/New-AC-Blower-Motor-Subaru-Legacy-1995-1999_W0QQitemZ290407215631QQcmdZViewItemQQptZMotors_Car_Truck_Parts_Accessories?hash=item439d9e720f
I cant tell if it has the other little "box" on top like the first picture though
(This post was edited by mosinmatt on Mar 1, 2010, 12:50 PM)
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Tom Greenleaf
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Mar 1, 2010, 2:25 PM
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Re: 95 subaru legacy heater/AC wont work
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See if that pic shows from Ebay which will disappear when ad run stops. What Box are you seeing? If you mean where it plugs in or a vent tube for it it's not clear in these pics. Appears the brass thing is a ground or plug - not sure.
You could take out the one you have and check it off car with jumper clips and clear junk if any out of the squirrel cage if that's what is causing noise??
Prices were better at Ebay (your call on stuff from them) and seemed to include the cage which is good if your old one is broken. Careful if you need to use your old one, if you get in there at all, some of those retaining nuts (one typical) are REVERSE threaded! Easy to break and that wipes out the product - killed, done, kaput!
You can't see or put your finger on the wheel with it in place. Body of housing must be grounded or these things won't work or be erratic.
This item has nothing to do with where air comes out but would have everything to do with if any air come out ducts. It just creates air motion - not even the speed of it - that's by switch and a resistor.
Hope we are on the same page with what the problem is on this??
T
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mosinmatt
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Mar 1, 2010, 9:40 PM
Post #15 of 20
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Re: 95 subaru legacy heater/AC wont work
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[URL=http://img707.imageshack.us/i/am51024696.jpg/]
Ok, so what is this part that I circled?
[URL=http://img297.imageshack.us/i/blowerpurplestock.jpg/]
Cause I am not sure if this has that part (i assume it does)
I am going to TRY to take it out tomorrow and clear it out.
I do think it is this product.
What happned was we were looking at fuses, then we looked under the passenger side dash. We found that pressing this product (the blower motor?) cause the air to work again.
The air will still not work, but if you knock on the blower motor, it works a bit. I can also here the fan click like something is in the way or something as well.
The switches still work and click on and off. The vents still switch (front vents dont work though...never have since I have had it. Wonder what the problem there is?)
I am also going to call a local salvage shop my dad knows to see if I can get a deal on a part
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Tom Greenleaf
Ultimate Carjunky
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Mar 2, 2010, 4:47 AM
Post #16 of 20
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Re: 95 subaru legacy heater/AC wont work
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Thanks for enlarging the pics. The "blower motor" is just that, a blower motor and that alone. It doesn't make decisions on direction of air nor the speed! That's elsewhere - said before a resistor is the common way sort of like a dimmer switch. If pushing on that plug which I think the brass tab is makes this work there's the high chance of the motor or connections being the fault with air volume. The plug should be power and the body and flange ground. Since it's mounted on plastic, one of the fastening screws/bolts will have lead or strap of some sort that grounds the body of the motor as the flaring of the mount is part of it.
You could test the ground side by using jumper clips to a very sharp test light probe to known good ground and touch it to the body of the motor or flange as a test - if that lights up the show, the problem is with a loose ground - likely. Not sure of anything. As you get closer doing the replacement you could test further with a test light as access improves.
Salvage/Junk yards: Great place if the type that allow you to pick your own. You can look over similar cars all torn apart and know/see what fasteners are where and what sizes types of fasteners or does a dash part slide to lock and just fasten on one end! At a glance you don't know these things and stuff breaks which is nice to avoid.
Make sure there's clearance if you do go to remove this motor to back it out. Some of this seemingly so simple stuff can require removal of much more, up to and including the entire heater/A/C distribution box. If not clear I do suggest getting real software for the specific vehicle and clear diagrams/instructions. One of several is www.AllData.com chose or view a sample download from them or others if needed. I don't have full manuals on line as they cost a ton for a wide range of vehicles.
Good luck. Test away as much as possible to rule out as many chances as you can of a wrong diagnosis ahead of time,
T
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mosinmatt
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Mar 3, 2010, 12:06 PM
Post #17 of 20
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Re: 95 subaru legacy heater/AC wont work
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Still having a bit of trouble figuring out what you mean. But I am sure I have to replace at least the fan in there, as it makes noise when it spins.
Are you saying it might be a connection problem? meaning a loose plug or wire? I am not even sure where to look for the grounds to it or anything, and currently do not have a tester.
All the controls work on the dash and everything. But pushing or hitting the motor (the part i had circled) will sometimes let it kick on lightly. So, by my guess it is either a bad motor, or a bad connection.
Sorry, I am pretty bad with the technical aspects of these things.
I will have to look for that when I try to take it out tomorrow.
I also noted a tube going to the motor, what exactly does this do?
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Tom Greenleaf
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Mar 3, 2010, 2:07 PM
Post #18 of 20
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Re: 95 subaru legacy heater/AC wont work
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#1 And correct me if I'm misunderstanding: The blower (an electric motor) isn't blowing air or turning the squirrel cage also known as wheel or whatever such that there's no powered air flow.
Pics of test tools:
A) Test light:
B) Jumper wire (cheap and just a sample pic of wire with alligator clips at each end: These (are under 2 bucks at Walmart for two, one red one black - pre made.)
~~~~~~~~~~~~
OK: If you can get at this motor and the wire to it you should be able to test for power getting to it with the scratch awl (is or make sharp) end of test light with its wire with clip end to known grounded. Test on a simple battery or the car's battery it will light up the handle if current is present.
Now, if you use a jumper clip to known vehicle's power* to the test light's clip then anything you touch that is in fact ground will light the handle as well.
USE CAUTION FOR WHAT YOU CHOOSE FOR A POWER SOURCE THIS WAY AND WHAT YOU TOUCH.
* Extra care if worried you can add an in line fuse to jumper wires.
Note: POWER: Is DC voltage going to a device. Alone that wont enable anything so it needs GROUND.
GROUND: Should be any bare body metal as all metal of body should be grounded. Painted items wont work so find a bolt, door jam striker or something known to be ground.
Back to testing: If power gets to the motor and the wire plug seems fine then you need to know that the metal of the flare mounting which includes body of the motor is grounded. One fastener is sometimes used when motor is mounted in plastic which doesn't conduct electricity - either positive power or ground. You may need to use scratch awl end to scratch thru paint to achieve seeing ground.
By pushing on this in some way I can't see from here it could have a weak connection if pushing on it makes it work properly. If internal a light tap with a hammer or extension and hammer to motor's body may kick in sticky brushes? Just finger pushing wouldn't likely work for that issue.
If the motor has known power and ground and doesn't blow or make a bunch of noise trying to it would suggest it's bad. You could then test it with jumper wires off the car to know it's not working.
Another note: To ground body/flare/mounting of the motor some vehicles may use a wire or a strap of metal to a fastener to dash or body ground ultimately which gets back to battery. All power starts and ends at the battery for anything to work. To save always running two wires some items are grounded to body or dash metal which should all be ground.
Yes - all this has to be done with key in position that would normally empower blower and settings for it to work,
T
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mosinmatt
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Apr 9, 2010, 2:38 PM
Post #19 of 20
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Re: 95 subaru legacy heater/AC wont work
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Update: It was the blower motor all along. GOt a new one put in, and it works fine!
Thanks for all the help, I really do love this site. Even though the last two problems I fixed on my own, a minute after posting them, haha.
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Tom Greenleaf
Ultimate Carjunky
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Apr 9, 2010, 2:45 PM
Post #20 of 20
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Re: 95 subaru legacy heater/AC wont work
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Without being there that sure looks like where it plugs in.
Bet is that is not serviceable if broken there,
T
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