Heater Core - JeepForum.com

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post #1 of 26 Old 07-30-2013, 10:22 AM Thread Starter
AristosIV
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Heater Core

Howdy
My 95YJ just doesnt warm up in the winter like it used to.I have the original stock heater core. I'm thinking that it needs to get replaced. I've looked online and theres quite a variety of replacements.
Does anyone know which heater core is the best?
Thanks

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post #2 of 26 Old 07-30-2013, 10:53 AM
bpounds
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I bought mine from Rock Auto. It was around $30 or so.

But I'll bet that is not your problem. It could be plugged, but probably not. You will probably find your problem in the blend doors in the heater box assy.

I am assuming your engine is running at normal temp.
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post #3 of 26 Old 07-30-2013, 02:04 PM
XJ93
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I flushed my heater core (factory original still) with CLR. Worked very well. How is the radiator? I just replaced my radiator due to plugging and leaking issues and hot dang she blows real hot now!
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post #4 of 26 Old 07-30-2013, 02:37 PM
Rproject
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I went with this one: https://www.rockauto.com/catalog/mor...675&cc=1185241

Enjoy your weekend ripping apart the inside of your rig.

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post #5 of 26 Old 07-30-2013, 02:45 PM
bpounds
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Quote:
Originally Posted by Rproject View Post
I went with this one: https://www.rockauto.com/catalog/mor...675&cc=1185241

Enjoy your weekend ripping apart the inside of your rig.
That's the one I bought as well.

But if I had it to do again (and I probably will eventually) I would spend a few extra bucks and get this one:
http://www.rockauto.com/catalog/more...127&cc=1184745

Reason? Look carefully at the picture. This one has the extra mounting bracket soldered to the top of the core. So it is secured like the OEM. The Spectra version doesn't and it ends up just sitting loose in the heater box. I put a little foam in to keep it from rattling, but I'm afraid the movement is going to shorten its life.
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post #6 of 26 Old 07-30-2013, 03:15 PM
Rproject
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^ I'd agree that the heater core just kind of sat in there. I was able to salvage the foam from around my OEM one and reuse it, but it wasn't 100% tight. I took some foam that's used as a filter for window air conditioners and put that around it to lock it in place. It works. Not "right", but it works. Mine's not a DD during the winter, so I really didn't care THAT much, but the one bpounds suggested does look more correct.

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post #7 of 26 Old 07-30-2013, 03:19 PM
SeanB95YJ
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before you go buy anything you might not need... inside the jeep, under the glove box area, you'll see the air box and what looks like a bicycle brake cable connected to it... on mine, it wasn't the actual cable end, but where the cable housing clamps on to the bracket kept popping off so moving the heat control lever was just moving the cable housing and not the cable itself. the little tabs that "snap" into place on the bracket were broken - fixed it with a zip tie, been going good the last 3 years

Sean B. - Schenectady, NY - 95 YJ, 350/700r4/NP241, JB Shorty SYE, 8.8 rear, 2" BDS, 1" homebrew shackles, Daystar 1" BL, TJ flares, 35x12.50 General Grabber AT2 on 15x10 Bart D-Truckers, Polyshield polycarbonate windshield, HD over/under crossover steering
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post #8 of 26 Old 07-30-2013, 03:22 PM
debord97
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I always take mine to the car wash and disconnect the heater hoses from the pump. Stick the sprayer nozzle in the hose and flush it out good alternating back and forth on the hoses. Some people say you shouldn't do this but I have never had any problems. I'm sure if there is a weak spot in the heater core you may find it though in which case you probably needed to replace it anyways.
If you do what I do make sure you know where the other hose is pointing before spraying. You could end up soaking wet.
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post #9 of 26 Old 07-30-2013, 10:36 PM Thread Starter
AristosIV
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Quote:
Originally Posted by debord97
I always take mine to the car wash and disconnect the heater hoses from the pump. Stick the sprayer nozzle in the hose and flush it out good alternating back and forth on the hoses. Some people say you shouldn't do this but I have never had any problems. I'm sure if there is a weak spot in the heater core you may find it though in which case you probably needed to replace it anyways.
If you do what I do make sure you know where the other hose is pointing before spraying. You could end up soaking wet.
Thanks everyone! Ill try the cheap fixes first.years ago I'd have gone to a radiator shop and gotten it boiled out. I should mentioned I had the jeep in storage for around ten years and I've been driving the past two years
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post #10 of 26 Old 07-31-2013, 06:21 AM
XJ93
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debord what you are doing is illegal you know. That is improper disposal of coolant which can be a toxic chemical. You need to not do that anymore.
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post #11 of 26 Old 07-31-2013, 09:06 AM
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^^^ That depends on the local municipalities rules on disposal. Many still allow you to pour it down the sewer (inside drain). If the car wash drains in to the sewer (not the storm drain) and they allow it, he's OK.

Tom
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post #12 of 26 Old 07-31-2013, 01:03 PM
Rproject
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Quote:
Originally Posted by tom_sprecher View Post
^^^ That depends on the local municipalities rules on disposal. Many still allow you to pour it down the sewer (inside drain). If the car wash drains in to the sewer (not the storm drain) and they allow it, he's OK.
Any community that allows this practice should have all of their aldermen/women, mayor and entire city council's heads examined.

An excerpt from the EPA website on anti-freeze:
Antifreeze is toxic to humans and animals. Waste antifreeze contains heavy metals such as lead, cadmium, and chromium in high enough levels to potentially make it a regulated hazardous waste, so most states strictly regulate antifreeze disposal. Antifreeze generators and state and local programs should not dump spent antifreeze on land or discharge it into a sanitary sewer, storm drain, ditch, dry well, or septic system; dumping antifreeze can cause serious water quality problems and might harm people, pets, or wildlife.
http://www.epa.gov/osw/conserve/materials/antifree.htm

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1996 Forest Green XJ

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post #13 of 26 Old 07-31-2013, 02:57 PM
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I don't think "anti-freeze generators" includes you or me. The wording there implies to me that businesses and governments should not use the sewer to dispose of their byproduct anti-freeze. I am also confident that our waste water treatment facilities where I live can handle consumer quantities of anti-freeze in the regular waste water stream. Everyone should check their own local regulations.
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post #14 of 26 Old 07-31-2013, 03:09 PM
Rproject
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^ Where do you live again, bpounds? I want to make sure if I ever visit your town that I have plenty of bottled water with me.


Oh, and OP, you're in Bourbonnais? You should join up with the Chicagoland Dirty Deltas. We're a great group of local YJ's, TJ's and mostly JK's. Regular outings and good people willing to help out a fellow Jeeper. BTW, how's Bears camp going?

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1996 Forest Green XJ

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post #15 of 26 Old 07-31-2013, 03:11 PM
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Originally Posted by Rproject View Post
^ Where do you live again, bpounds? I want to make sure if I ever visit your town that I have plenty of bottled water with me.
Play it safe. Stick with beer.

Seriously though, our sanitary sewer does not feed into the water table.
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