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Old 02-20-2013, 09:26 PM   #1
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Simple question

Is their a way to access the heater core to clean it off or blow it off with compressed air without removing every dash component. 1997 TJ no AC

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Old 02-20-2013, 09:28 PM   #2
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Not that I know of. Mine is slowly leaking anti freeze and I have been putting off changing it because of this.

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Old 02-20-2013, 09:34 PM   #3
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i don't believe so but taking the dash out of a tj is cake compared to other vehicles should not take more than a day in and out
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Old 02-20-2013, 09:38 PM   #4
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Quote:
Originally Posted by cbush1885
i don't believe so but taking the dash out of a tj is cake compared to other vehicles should not take more than a day in and out
Also not how I wanna spend my time either.. But I guess I gotta unless someone had a idea
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Old 02-20-2013, 09:38 PM   #5
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Took me 3 hours, 3 1/2 including evac and recharge the A/C
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Old 02-20-2013, 09:41 PM   #6
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Haha - took me 5 days.
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Old 02-20-2013, 09:46 PM   #7
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Haha - took me 5 days.
parts on back order?
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Old 02-20-2013, 10:11 PM   #8
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parts on back order?
No, just very ummm... particular
If I had to do it again, it would be MUCH faster.
Oddly, putting it all back together was so much easier (and faster).

To the OP - you wouldn't gain much by pulling the dash to just blow off/clean the heater core.
Where the heater core is buried away in the heater box, I can't imagine anything getting in there and blocking up the fins at all let alone blocking them up to the point where heat production is compromised - unless it's like mine and was blocked up by leaking/corrosion in which case you would need a new heater core anyway.
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Old 02-20-2013, 10:52 PM   #9
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Quote:
Originally Posted by Wesboy

No, just very ummm... particular
If I had to do it again, it would be MUCH faster.
Oddly, putting it all back together was so much easier (and faster).

To the OP - you wouldn't gain much by pulling the dash to just blow off/clean the heater core.
Where the heater core is buried away in the heater box, I can't imagine anything getting in there and blocking up the fins at all let alone blocking them up to the point where heat production is compromised - unless it's like mine and was blocked up by leaking/corrosion in which case you would need a new heater core anyway.
Dust wouldn't do this after 14 years?
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Old 02-21-2013, 03:02 AM   #10
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Dust wouldn't do this after 14 years?
My 97 has AC, so I don't know how different our heater boxes are.
But on mine it would be near on impossible for the heater core fins to get blocked up on the ouside (because of where it is mounted).
And even less likely to have enough junk in there to restrict heat production.
On mine (and I'll assume yours is the same) the air blows ACROSS the heater core fins anyway (not THROUGH them) - the heater core is really tucked in the front of the heater box with the air coming in sideways from the passenger side.

Perhaps some-one who has pulled a heater box WITHOUT AC can confirm this...
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Old 02-21-2013, 05:33 AM   #11
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/\ /\ Sorry if I have misled anyone - some of the information in my previous post could be wrong.
I have just been looking at some pics from when the heater box was apart and to be honest, can't work out how the air gets past the heater core at all.
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Old 02-21-2013, 07:37 AM   #12
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Quote:
Originally Posted by Wesboy
/\ /\ Sorry if I have misled anyone - some of the information in my previous post could be wrong.
I have just been looking at some pics from when the heater box was apart and to be honest, can't work out how the air gets past the heater core at all.
Well in theory they run air through it, then into the cabin. Thus outside dust could get clogged in the fins after 10 years of mudding
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Old 02-21-2013, 05:03 PM   #13
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to be honest with you if your that worried about it and would like to take it out i would just replace it, there only $50...

the possibility of dust getting in there is more likely than mud and would stick to an a/c coil waaaaay before a heating coil because heater cores do not condensate... also the fins are not that close together so it should stay cleaner longer

it is also possible that the inside of the coil is dirty, maybe flushing out the cooling system would help as well, one of those pipes can become clogged and not allow for sufficient glycol / water flow, this is something to try before you take out the entire dash but if it does not work i would just replace the core, also if its not working at all you should make sure all the actuators are working properly so air is not bypassing the coil
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Old 02-21-2013, 05:41 PM   #14
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Yes it can get clogged with debris. I've seen a few pictures in thread regarding heat problems a few after taking apart the dash have found a lot of crap on the air side.
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Old 02-21-2013, 07:13 PM   #15
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Where would I buy a heater core? For the said 50?
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Old 02-21-2013, 08:25 PM   #16
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Spectra Premium/Heater Core (93028) | 2002 Jeep Wrangler 4WD 6 Cylinders S 4.0L SFI | AutoZone.com

part number is the same for a 1997 not sure what engine you have but i would assume that is redundant

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