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Old 11-21-2000, 08:49 AM   #1
gbelli
Scooby Newbie
 
Member#: 2993
Join Date: Nov 2000
Location: central MA
Vehicle:
95 legacy wagon
red

Question heat adjustment

I have a 91 Subaru Legacy Wagon as a winter car. This meaning the heat should work It works but not well. The lever for the cold-hot will only go part way into the cold, and all the way into the hot. It never really gets that hot. I think that it needs to be adjusted some how so it can go all the way to the left (cold), in turn letting it go all the way to the right(hot).


cold hot
|-------|
|
It goes to about here on the cold side.

I opened up the dash and looked at it and it looks like the lever controls a pull cord. Do you know where that is to be adjusted? back there, or near the heater core? I figure if I can losen it or tighten it, it will allow it to go all the way to hot.
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Old 11-21-2000, 02:53 PM   #2
motorob
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Join Date: Nov 2000
Location: Nuevo Mexico, usa
Vehicle:
06 Evo IX MR

Have a Nice Day?

I can't help you with the actual problem, but can make these observations:
1. Every Subaru I have had heated up FAST. They don't have the incredible, roast you right out of the car heat that Saabs and Volvos have, but the car starts putting out heat within 3-5 minutes of start up. The heat itself is, as I said, pretty good, not awesome.
2. Be sure that the car itself is heating up porperly. Subes have a pretty hot (c.88-92 degree celsius) thermostat in them, the temp gauge should read near halfway, but be steady at halfway winter or summer. If the engine isn't getting that warm, the heat won't be either.
3. Subes heater core is always hot, there is control of coolant flow to the heater core. Heat adjustment is by a "blend door" which mixes hot and cool air to the selectd temp. This is probably your problem, blend door is out of adjustment, cable kinked or broken, etc
Hopefully someone can give you better/more specific advice. Good luck!
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Old 11-22-2000, 05:57 AM   #3
gbelli
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Join Date: Nov 2000
Location: central MA
Vehicle:
95 legacy wagon
red

Post

Thanks for the reply.

It actually doesn't heat up all that quickly. What coolant / water mix should I be running? I think its ~90% coolant in there now.

I have had some heat associated problems. When I first got the car in January, the heat didn't work anyway. A quick hit to the golvebox area rattled something that was loose and the fan blew again. Only with the same 'hottness' I have now. Then over the summer (long story, but my summer car was still being worked on) I was driving in Boston on the hottest day of the year (over 95), and I smell, and think to myself "some poor b@stard just lost all his coolant..." Well that was me So I pull over as soon as I can, and let it cool down. Then I drove ~100 yards to a parking space (yea I found one!!) Looked a little more and didn't see anything. I went and got a gallon of H2O and put it in. Then I saw that one of the heatercore lines was the culprit. Luckily I had Ductape I went to my concert and let it cool. When I came out I taped it up, filled it up, and watched it for the 45min ride home. Not one problem! I replaced the lines in the AM.

A week or so later it just went to HOT. I took it into the shop (no time myself) and he replaced the t-stat event hough he wasn't positive that was the problem. He suspected an air pocket. I probably caused that

I am going to crawl around on Friday and look for some kind of adjustment when I'm putting the new CD player.
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Old 11-22-2000, 08:59 AM   #4
svxxx-26
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Location: Sissonville, WV, USA
Post

Disclaimer: I'm not a chemical engineer, and I don't have any new info about your heater problem. I do believe, though, that a 90% concentration of antifreeze is not a good idea. Can't quote you any sources, but articles I've read on the subject says that for freeze protection, 75% is the upper limit - and it actually goes DOWN if you go above that. And unless you live near the Arctic circle, a 50% mix is best (transfers heat better). Something to think about.
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Old 11-22-2000, 10:00 AM   #5
gbelli
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Join Date: Nov 2000
Location: central MA
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95 legacy wagon
red

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Thats what I have heard too. After the shop did the t-stat, there is no way that was a 50/50 mix. I'll look into it, fullknowing of your disclaimer Thanks
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Old 11-24-2000, 09:00 AM   #6
Peaty
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Join Date: Oct 1999
Chapter/Region: MWSOC
Location: Lawrence, KS
Vehicle:
2010 Legacy 3.6R Lim
Azurite Blue Pearl

Arrow

There is an adjustment to the temp control cable. According to my Haynes, There is a clamp that holds the cable on the underside of the HVAC controls that you can loosen and slide the cable to adjust. Here is the text. I'll type it out because it's pretty short.

"Loosen clamp. Set the temp control lever to the FULL COLD position. Tighten the clamp onto the temp control cable and tighten until the cable seats firmly and the casing dosen't move when the lever is moved"

Having said (typed) that. I was just in there working on the bulbs that burnt out and my cable (97') dosen't have a clamp there it has a circlip that holds it in place. A clamp would have been a lot easier to work with. Possibly since yours is a 91 it has the clamp. I have pics of how to get at the adjustments as part of my "how to change the bulbs" instructions. If you want them let me know. If you are in a real bind I'll scan in the part of the manual. Just e-mail me direct if you want the pics.

Good luck,

Peaty
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Old 11-27-2000, 08:54 AM   #7
gbelli
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Member#: 2993
Join Date: Nov 2000
Location: central MA
Vehicle:
95 legacy wagon
red

Post

Thanks! I am going to look into that this afternoon. I know there is something back there I can loosen.
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Old 11-28-2000, 08:19 AM   #8
gbelli
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Join Date: Nov 2000
Location: central MA
Vehicle:
95 legacy wagon
red

Post

GOT IT!

After I tore apart the dash again I decided to follow it down to the passenger side floor. Well there it was in all its glory, just sitting out in the open. A cable, and a clip. I took it off of the clip, put it to cold, reattatched, and it fired right up!

Thanks, you saved me 1/2 labor at a dealer
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Old 08-05-2008, 08:22 AM   #9
hondadude32
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Default

Hey Peaty...I was able to replace the bulbs but after putting all together...I don't have heat anymore. The cold/heat leaver moves smoothly to heat and not heat. When moving back to cold there is some abstruction, so I push it a bit harder, I hear a click then the lever moves back all the way to cold. Any idea why?
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Old 08-05-2008, 10:02 AM   #10
Huffer
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Chapter/Region: MWSOC
Location: Wellington,NZ / Willoughby,OH
Vehicle:
99 GF8 Impreza 2.0
2= 1998 BD + BK Legacy GT

Default

cable isn't hooked up right, or you've reassembled incorrectly.
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