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Pics Of Heater Core Install


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#1 Modus

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Posted 26 September 2004 - 11:25 PM

]Well this is proberly the reason why I was losing coolant over a couple of months and smelling it comming out of the vents when the heat was on. I didn't relize all the coolant that was under the carpet due to the rubber mats that I have on top.

It was an easy job and I'd recomend it to any one who is a do it yourselfer. cool.gif






Edited by Modus, 27 September 2004 - 12:24 AM.

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#2 shurgen

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Posted 27 September 2004 - 12:12 AM

Good pictures! Will keep it mind if mine goes bad in the future smile.gif
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#3 Bay13

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Posted 27 September 2004 - 03:25 AM

Nice pics of an S70 change out. There is another member on the forum that had a local shop tell them you had to remove the dash to do the heater core change. I went and met with them and showed them how easy it would be and that the dash didn't have to come out. Glad to see you pulled it off. Maybe that shop will begin visiting this forum to pic up some tips from it's members. Again Good Job! smile.gif

#4 NateB

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Posted 27 September 2004 - 04:44 AM

QUOTE(Bay 13 Admin @ Sep 26 2004, 09:25 PM)
Nice pics of an S70 change out.  There is another member on the forum that had a local shop tell them you had to remove the dash to do the heater core change.  I went and met with them and showed them how easy it would be and that the dash didn't have to come out.  Glad to see you pulled it off.  Maybe that shop will begin visiting this forum to pic up some tips from it's members.  Again Good Job!  smile.gif




Would the process be identical for a 1995 850 turbo sedan?
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#5 Modus

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Posted 27 September 2004 - 01:22 PM

QUOTE(NateB @ Sep 26 2004, 11:44 PM)
QUOTE(Bay 13 Admin @ Sep 26 2004, 09:25 PM)
Nice pics of an S70 change out.  There is another member on the forum that had a local shop tell them you had to remove the dash to do the heater core change.  I went and met with them and showed them how easy it would be and that the dash didn't have to come out.  Glad to see you pulled it off.  Maybe that shop will begin visiting this forum to pic up some tips from it's members.  Again Good Job!  smile.gif




Would the process be identical for a 1995 850 turbo sedan?


From what i understand an 850 has the same core and is simular as taking the panels off. Thanks Bay13 you definatly don't need to remove the dash, as shown. However the AC system is another story. Glad you all like my work. I'll send those pics ASAP.

Modus
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#6 prasamin

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Posted 28 September 2004 - 03:15 AM

Good job Modus...your pics are great, with good description. I never had this problem, but just checked in to see the pics...keep it up

-Pras-

Rich, maybe you could pin this to the repairs section or something...may come in handy!

#7 Bay13

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Posted 28 September 2004 - 03:15 AM

QUOTE
Would the process be identical for a 1995 850 turbo sedan?


YES

#8 Modus

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Posted 28 September 2004 - 03:18 PM

QUOTE(shurgen @ Sep 27 2004, 08:32 PM)
Modus, how did you post the pictures on this website?


I used a free image hosting site to host my pictures that I upload

I use the link they provided and place it in my post as an image link. When you post they automatically show up.

right now I have those core pics using this site.

imageshack

there is also

Photobucket

but Photobucket's servers are slow and I have trouble seeing the posted images.

cheers,
Modus./
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#9 98V70BASEBOY

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Posted 28 September 2004 - 11:08 PM

Nice pics Modus!

This will definitely come in handy when I pull mine.

I've gotten the drivers side prepped, and in doing so, had to cut the sound deadening material that is under the carpet and remove a large chunk. The entire mat of foam was like a sponge and was SOAKED with coolant! I must have gotten half a gallon between the carpet and the sound deadening.

I'm not using the heat yet so there should be no more added, but I can't wait to replace the core.

Again, really nice! smile.gif
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#10 Bay13

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Posted 29 September 2004 - 12:30 AM

QUOTE
I'm not using the heat yet so there should be no more added, but I can't wait to replace the core.


The FWD Volvo doesn't have a heater control valve, the coolant flows all the time through the heater core, you get heat in the car via moving dampers and letting air flow over the heater core, so don't be surprised if you still get coolant on the floor.

#11 98V70BASEBOY

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Posted 29 September 2004 - 01:00 AM

QUOTE(Bay 13 Admin @ Sep 28 2004, 06:30 PM)
QUOTE
I'm not using the heat yet so there should be no more added, but I can't wait to replace the core.


The FWD Volvo doesn't have a heater control valve, the coolant flows all the time through the heater core, you get heat in the car via moving dampers and letting air flow over the heater core, so don't be surprised if you still get coolant on the floor.


How would this explain only loosing coolant in the winter when the heat is used the most? I don't seem to loose a drop in the summer.

Do you suppose the cold weather could shrink the o rings enough to cause it to leak at the junction of the core and lines?

Any other ideas? blink.gif
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#12 Guest_How about 2001 and newer?_*

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Posted 29 September 2004 - 02:18 AM

Is the process similar for a 2001 V70 XC? I get a little whiff of coolant from time to time when the heat first comes on.

keefus

#13 Bay13

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Posted 29 September 2004 - 03:18 AM

THe pics only work to MY2000 after that the air box changed. The parts fitch show it with the hose/pipes coming in on the drivers side, I'd have to look at it to see how you would get the heater core out. Haven't had to mess with the new cars Yet.

#14 98V70BASEBOY

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Posted 29 September 2004 - 12:17 PM

Rich,

If coolant flows through regardless of whether you call for heat or not, why would I only see the level in the expansion tank drop during the winter?

Any thoughts on how that relates to my leaking heater core?

BB
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#15 Bay13

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Posted 29 September 2004 - 08:48 PM

I have no Idea about the coolant loss winter vs summer.

I could only guess about the winter summer thing.

Guess: In the summer you run the A/C, when that happens the radiator fan automatically comes on in low speed and is running all the time. The temp at the sensor is around 95C and I've seen it as low as 90C. When the A/C is not running the fan doesn't come on until about 104c, so there is more heat and pressure, that "Might" be the reason.

#16 98V70BASEBOY

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Posted 29 September 2004 - 09:36 PM

Thanks Rich!

Bottom line is, it leaks and I gotta fix it. Obviously the lake of coolant I squeezed out of the sound dampening came from the core, or perhaps the junction of the pipes and core. Should be fun, but I think I'm gonna leave the carpet out for a while to ensure there is no leak after the R&R.

Great board!!! biggrin.gif
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#17 96DTM850

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Posted 01 October 2004 - 09:00 PM

I think as a preventative maintence, just flush your coolant at least twice a year, keep it clean. I think what happens is that coolant heating up, passing through the metals in the engine, heads, heater core, it becomes acidic and starts to eat away at the metals.

This problem was notorious for the MKIII Supra Turbo, as it would eat away the head and head gasket, causing a blown head gasket.

Come to think of it, I should check my coolant, flush it out this weekend along with an oil change. cool.gif


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#18 Guest_Jeong_*

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Posted 02 October 2004 - 05:33 AM

QUOTE(How about 2001 and newer? @ Sep 29 2004, 02:18 AM)
Is the process similar for a 2001 V70 XC? I get a little whiff of coolant from time to time when the heat first comes on.

keefus


I just changed the heater core in my 850. I also swapped out the pipe coupling kit which is the piece that attaches to the firewall. Had to as it was leaking. I thought it was the heater core but when I pulled the core it looked fine. Replaced it anyway though. I think it was the pipe coupling kit as when I was removing it, it basically fell apart and was very brittle. The nice thing about replacing it is that it is already installed with clips and o-rings so all you have to do is stick the hoses and pipes back in. I think that may be why some who replaced the heater core are still getting leaks.



Jeong

#19 VAVolvo

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Posted 20 October 2004 - 01:48 AM

Impressive! I learned a lot, thankyou! biggrin.gif
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#20 smax

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Posted 01 May 2005 - 03:44 PM

this is the husband talking now. great pics and instructions have allowed me to "expose the trouble". in my case, there's significant amount of antifreeze on the floorboard because we're idiots and we've been adding antifreeze for about a month. too broke to pay the high estimate of repair.

it's leaked about two gallons in a month (i don't know why the smell wasn't stronger).

question: is it the core that's bad, or is there a o-ring somewhere that's shot?





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