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The second heater core...

Help, Advice and DIY Tutorials on Volvo's extremely popular car line -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.

1992 - 1997 850, 850 R, 850 T5-R, 850 T5, 850 GLT
1997 - 2000 S70, S70 AWD
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
1997 - 2004 C70

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Eddystone
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Eddystone

The second heater core...

Post by Eddystone » Tue May 21, 2019 4:32 pm

...is much easier than the first!

I have done a few very difficult heater cores in my days, and the V70/S70 core is nowhere near the most difficult heater core to change, but it sure is easier the second time you do it - hopefully on a different car! Just knowing that it actually will come out and go back in with the space restrictions is a big plus.

I hesitate to get into a discussion of which replacement heater core you should buy because I know there is disagreement there, but I am on my second Swedish Auto Parts $29.95 core and have had no problems. This recent core doesn't even have the bad smell that people write about (I never remember to run it through the dishwasher as people recommend). The older core has been in my V70 for over 18 months with no leaks and great heat in Pennsylvania winters.

I will say that I knew the heater core was going when I bought the car, and I put off changing it too long. At first there was a detectable antifreeze smell. Then the smell got worse. Then suddenly turning on the defroster put a lot of moisture on my windshield on a colder rainy day, and I could hardly see where I was going. So, slow leaks can suddenly get much worse, and I actually have some in my carpet that I need to deal with.

The core I took out was probably the original OEM core with the usual corrosion in the usual places. My car has 148k on the clock which would mean that the OEM radiator really did its job. Personally, I am, however, skeptical that all of the "OEM" parts are of the same quality as they were when these cars were new or of recent vintage. You have to pick and choose your parts. There are some places where you can definitely save money and do well, but others where it's not worth the gamble.


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tardcart

Re: The second heater core...

Post by tardcart » Tue May 21, 2019 5:05 pm

I agree that Volvo braded parts owned by china are not the same as the original unless its old stock. However that core doesn't even fill out the space correctly and needs extra foam to keep the airflow from bypassing the coil on the sides if I remember right. also I think the ports are too on the ring, not enough to leak but down the road ten years.. oh I forgot the carbon tax will take these off the road sooner than that.



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Re: The second heater core...

Post by bmdubya1198 » Wed May 22, 2019 8:01 am

Both my P80s have SCP heater cores now, no issues thus far. My GLT actually had an SCP core in it before I replaced it, but it was an older version with black end tanks rather than white on the current ones. I replaced it at probably 190k miles. I installed the same one in my R, but that core was original at 187k and leaking visibly, whereas the GLT has no visible coolant leak. It was corroded and producing a coolant smell, however.


2000 V70R Venetian Red/Charcoal M56 Swapped 191k
2000 S70 GLT Mystic Silver/Taupe 2??k
2003 S60 2.4T Silver/Black 108k
2007 XC90 V8 AWD Sport Titanium Grey/Black 160k
1993 944 Base Beige/Beige 221k
1992 Miata Mariner Blue/Black 146k
Sold-
1998 V70 GLT Black/Beige 193k
1998 S90- Silver/Gray 207k
1995 850 GLT Tropic Green... crushed
2001 S60 2.4T Black/Black 230k
1988 744 Turbo M46 Beige Metallic/Beige 188k- Never should have sold it


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Re: The second heater core...

Post by wizechatmgr » Wed May 22, 2019 10:09 am

I had a '85 VW Cabriolet where I cut around the core, inserted the new one, and put it back together with a plastic welder. Was SO MUCH easier than pulling the whole darn dash out. Estimate for doing it was in the 1k$ range, which was stupid as the car was worth maybe 3/4s that.


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WhatAmIDoing

Re: The second heater core...

Post by WhatAmIDoing » Wed May 22, 2019 10:32 am

I'm hoping this logic rings true. Turned the heat on last night and my clothes still smell like antifreeze. Should probably take care of this now and not wait until winter, though I am tempted to bypass it until the fall.


'98 S70 T5M - 270,000+mi - forever a project
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abscate

Re: The second heater core...

Post by abscate » Wed May 22, 2019 10:45 am

Keeping the car another 100k/5 years?

SCP - cheap

FCP cheapest

:-D


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June

Re: The second heater core...

Post by June » Wed May 22, 2019 12:16 pm

bmdubya1198 wrote:
Wed May 22, 2019 8:01 am
Both my P80s have SCP heater cores now, no issues thus far. My GLT actually had an SCP core in it before I replaced it, but it was an older version with black end tanks rather than white on the current ones. I replaced it at probably 190k miles. I installed the same one in my R, but that core was original at 187k and leaking visibly, whereas the GLT has no visible coolant leak. It was corroded and producing a coolant smell, however.
So the aftermarket heater core lasted 190K or that was the incidental mileage of the car and the core actually had considerably less than 190K miles when it failed. Surprisingly my factory 16 year old core with 183K miles is still perfectly good. I have contemplated a preemptive replacement. This is why I want to know the lifespan, mine has to be on borrowed time. My mechanic has refused to replace it in the past. June


My Volvo cars owned
1989 740 GLT ordered
1994 850 4door standard shift ordered
1996 960 ordered
1998 S90 ordered totalled after 3 weeks
1998 V70 GT dealer stock car
2002 S80 T6 ordered totalled
2004 S80 T6 dealer stock car and current car owned

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abscate

Re: The second heater core...

Post by abscate » Wed May 22, 2019 1:51 pm

The P2s have a lot less cooling group issues than the P80s, June.

Im with your mechanic on this one.


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Re: The second heater core...

Post by bmdubya1198 » Wed May 22, 2019 3:30 pm

abscate wrote:
Wed May 22, 2019 1:51 pm
The P2s have a lot less cooling group issues than the P80s, June.

Im with your mechanic on this one.
True, you don't hear of nearly as many heater core issues with P2s.
June wrote:
Wed May 22, 2019 12:16 pm
bmdubya1198 wrote:
Wed May 22, 2019 8:01 am
Both my P80s have SCP heater cores now, no issues thus far. My GLT actually had an SCP core in it before I replaced it, but it was an older version with black end tanks rather than white on the current ones. I replaced it at probably 190k miles. I installed the same one in my R, but that core was original at 187k and leaking visibly, whereas the GLT has no visible coolant leak. It was corroded and producing a coolant smell, however.
So the aftermarket heater core lasted 190K or that was the incidental mileage of the car and the core actually had considerably less than 190K miles when it failed. Surprisingly my factory 16 year old core with 183K miles is still perfectly good. I have contemplated a preemptive replacement. This is why I want to know the lifespan, mine has to be on borrowed time. My mechanic has refused to replace it in the past. June
Whoops, I guess that was unclear, I replaced it with 190k on the car. I have no idea how many miles were on the heater core. The one in my R I believe was original at 187k.


2000 V70R Venetian Red/Charcoal M56 Swapped 191k
2000 S70 GLT Mystic Silver/Taupe 2??k
2003 S60 2.4T Silver/Black 108k
2007 XC90 V8 AWD Sport Titanium Grey/Black 160k
1993 944 Base Beige/Beige 221k
1992 Miata Mariner Blue/Black 146k
Sold-
1998 V70 GLT Black/Beige 193k
1998 S90- Silver/Gray 207k
1995 850 GLT Tropic Green... crushed
2001 S60 2.4T Black/Black 230k
1988 744 Turbo M46 Beige Metallic/Beige 188k- Never should have sold it


Need used parts? PM me!

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June

Re: The second heater core...

Post by June » Wed May 22, 2019 5:54 pm

abscate wrote:
Wed May 22, 2019 1:51 pm
The P2s have a lot less cooling group issues than the P80s, June.

Im with your mechanic on this one.
You know my 1998 V70 had a perpetual antifreeze leak at the heater core. Volvo warranty replaced it during my ownership 98-01. So I can attest that the P80 core was weak. So when does the P2 core die? June


My Volvo cars owned
1989 740 GLT ordered
1994 850 4door standard shift ordered
1996 960 ordered
1998 S90 ordered totalled after 3 weeks
1998 V70 GT dealer stock car
2002 S80 T6 ordered totalled
2004 S80 T6 dealer stock car and current car owned

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