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Heater mystery solved! (I hope)


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23 replies to this topic

#1 jonas

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Posted 31 October 2012 - 02:32 PM

Heater on the '85 brat has never really worked. Blower is fine, would blow piss warm at idle then at whatever the outside temp was driving. Been freezing my rump roast of every winter i've had it. I've flushed it, checked all the control devices, thermostat, scoured the Forums, everything to do with heat to no avail. Well this winter i decided "I WILL FREEZE NO MORE!" and decided to bite the bullet and replace the core. Wasn't looking forward to that! Started draining the radiator, so far so good. Went to remove the hoses from the heater core at the firewall. Old hoses, firmly seated on the core inlets, mostly tore them off but i expected that and was going to replace with new anyways. Got the top one off only to see this!

Posted Image

YOU THINK THIS MAY BE MY PROBLEM?!?
DUHRRRR... Glad i haven't gotten to much tore apart. I'll put back together and see what happens.

Edited by jonas, 31 October 2012 - 06:18 PM.
spelling


#2 Subruise

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Posted 31 October 2012 - 02:34 PM

no, thats a factory crimp. youre gonna erode the block with all that increased flow.:brow:

#3 jonas

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Posted 31 October 2012 - 02:56 PM

Yeah, i'm pretty stoked. Getting rained out right now so no work getting done. My '84 wagon heater is like an OVEN! Hoping for similar results!

#4 old sub freak

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Posted 01 November 2012 - 04:54 PM

You know there is a easer way to replace the core besides taking the dash out, ect....I have done this on quiet a few brats.Working on the drivers side down by the gas pedal I took my dremal tool and after unhooking all the plumbing,temp comtrol switch ect.I cut away the plastic "face"that held in the core.Once that was removed I gently pulled the core out ,like a radio or something.Cleaned any leaves ,ect ,then smothed any sharp or ruff edges and slid in the new core.Installed a few zip ties and some caulking and bingo....bring on the snow!!! This way I saved hours of work and in my eyes did a good job...I didn't replace the temp adjuster as it got banged up removing it.Come summer i just put it on defrost or even clamped one hose closed to keep me cool...Just my 2 bits worth...stay warm,Toddnick

#5 jonas

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Posted 01 November 2012 - 05:17 PM

Thats what i was gonna do, but thanks for looking out for me anyways. New core arrived today. Gonna hold onto it for a bit to see if that crimp was my problem. Should be all back together and on the road by friday.

#6 dominical1

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Posted 02 November 2012 - 09:46 PM

here is the link to an old post on the issue - definitely a time saver

http://www.ultimates...ead.php?t=49964

#7 Loyale 2.7 Turbo

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Posted 02 November 2012 - 10:02 PM

... Gonna hold onto it for a bit to see if that crimp was my problem. ...


That crimp was New for me, I've never seen something like that Before... But I haven't serviced EA81 Heather cores too.

I Believe it is good Idea to Try with it Straighten... if nothing changes, crimp it back again and install the New Heather Core.

Good Luck!
Kind Regards.

Edited by Loyale 2.7 Turbo, 02 November 2012 - 10:05 PM.


#8 ivans imports

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Posted 03 November 2012 - 11:04 AM

i take the core and remove the end tank with a torch and then i use a small flat thin stainless strap i got from a rad to clean cores then resolider the tank use 50/50 lead tin soilder and lots of flux preshure test in pail of water and the heat will work takes me about 2 hours but worth it my 79 wagon will cook you out. and just for fun i took the heat elements out of 98 outback and put them in my 79 seats heated seat 79 wagon is nice in - 20

#9 AKghandi

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Posted 03 November 2012 - 03:16 PM

that looks like the result of someone getting angry at that hose with some channel locks.:Flame:

hows the heat now?:brow:

#10 jonas

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Posted 03 November 2012 - 04:52 PM

Got it back together. I don't think it's fixed. Warm out today so it's blowing warm like it did, not cooking me like my wagon does. We'll see when i drive to work in the morning. Not impressed with performance so far.....*sigh*

#11 AKghandi

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Posted 03 November 2012 - 04:56 PM

try switching the hoses if you can. it will suck some of that crap out and let it flow.

#12 jonas

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Posted 03 November 2012 - 05:34 PM

Yeah, i probably will try that. For now tho i'm going to leave it as-is and see if after years of low flow if it gets better after some actual useage.

#13 ivans imports

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Posted 04 November 2012 - 11:07 AM

nothing but brut force will remove the years of biuldup inside the core have been there many times i do the same with loyale and justy cores. What i can tell you is no amount of flushing will work

#14 old sub freak

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Posted 05 November 2012 - 12:38 AM

You know down by the drivers right foot is the thing that adjusts the heater core temp.Its a piston thing that regulates how much coolant that can flow through.I have seen those stuck in the cool position and with some oil and mussel work got it opened all the way.That helped alot.and there is a 1/8 horizantal rod down there that came loose causing a flap to not open and that too has "pulled a rabbit out of the hat" and got the heat back.I have a junked heater box thing that is great to study when heaters go bad...Have you just tried to see if one of the tubes going to the heater core is warmer than the other.That would tell you your flow was restricted.... Good luck ,stick with it......winters a coming!!!! when all else fails break down and get a new core......well worth the cash!!

Edited by old sub freak, 05 November 2012 - 12:40 AM.
old one..


#15 jonas

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Posted 10 November 2012 - 04:27 PM

Well, the crimp wasn't the culprit. Got the old core out. New one is definitly easier to blow air thru the new one.

Posted Image

#16 jonas

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Posted 10 November 2012 - 04:33 PM

.

Edited by jonas, 10 November 2012 - 04:34 PM.
post duped


#17 jonas

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Posted 10 November 2012 - 06:25 PM

STILL BLOWING COLD!!!!!!! WHATTHE************!!!!!! IT'S SIMPLE ************ING TECHNOLOGY!!!!!!
New core-check!
New hoses-check!
Heater control valve operational-check!
All hoses hot to the touch-check!
Stuck fingers in to feel heater core. it's hot-check!

Is there something by the blower that regulates how much fresh air is allowed in? 'cause something being stuck open is all that's left that i can think of.

#18 old sub freak

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Posted 10 November 2012 - 10:01 PM

Down on the drivers side ,above the heater core is a semi horizontal rod ,1/8" or less.The end towards the seats clips onto a plastic thing.The other end (towards the firewall) controls a 4 inch square flap that will let the air move where it is spossed to..Boy I hope this makes sence.I had a similar problem and i happen to stumble on that flap not moving.I think the threaded end that pops into the plastic thing was "unpoped"haha.and not holding the flap where it should be.I fixed mine by using a zip tie to hold it open..hmmm so mabey the plastic was broken or i would have just snaped it in....Hey I was a few years ago...One good thing to have around is a "Cadaver" heater...the whole deal.I kept one and it is a gold mine when you come up against what is happening here..You can see what everything is spossed to do. Anyway I hope some of this makes sence and you get some heat!!!Hang on,you must be close!! :banana:

Edited by old sub freak, 10 November 2012 - 10:04 PM.
hey I'm learning here !! sorry..


#19 jonas

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Posted 10 November 2012 - 10:45 PM

Thanks OSF, I'm a *********************. I know exactly what you are talking about. I forgot to re-attach it. It's blowing nice and toasty now! I'll know fer sure when I actually take it out on the road tomorrow and put it thru it's paces.

#20 old sub freak

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Posted 10 November 2012 - 11:11 PM

Amen !!! You have to have heat up here in the Great North Wet. Happy Trails...OSF

#21 jonas

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Posted 11 November 2012 - 12:19 PM

WE HAVE HEAT!!!!! :headbang::headbang:

#22 Loyale 2.7 Turbo

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Posted 11 November 2012 - 02:25 PM

Congratulations! ... I'm Glad that you Fixed that! Posted Image

Edited by Loyale 2.7 Turbo, 11 November 2012 - 08:45 PM.


#23 jonas

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Posted 11 November 2012 - 04:29 PM

Thanks! I have learned more than i ever wanted to know about EA81 heaters.....

#24 ivans imports

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Posted 14 November 2012 - 11:16 AM

isent addjusting the cold air door fun !




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