Heater core leak, how to replace it, replacement on the Volvo S70, V70, XC70, 850, C70, P80 - VOTD

Heater Core Replacement: 1 to 2 hours. ($40 / $290 / $480)
I always use the Swedish Car Parts core: www.swedishcarparts.com/model...
If you smell coolant or other sweet odor when you turn the heat on, there is a good chance that your heater core has started to leak. If your windows fog along with the odor, you need to replace the core immediately.
I replaced a heater core in this Volvo S70. The process is just about the same for the Volvo 850 except for process of removing the lower dash panels. A little easier on the 850.
I suggest that you drain the radiator before doing this task. It will help you loose less coolant inside the cabin. You can also pinch the heater hoses outside of the firewall.
Basic heat / AC system information:
• Full flow heater core,...
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Disclaimer: • In this video I share ...
Basic car care KZbin channel: / rspiwin
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Visit my Website for special tools, my wish list and other helpful information: www.RobertDIY.com
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[@MeganMacDonald0123]

Thanks to your video I replaced the heater core in my 1999 S70 this weekend...it's the first real car repair that I've done completely on my own. Took me less than 2 hours with no issues and it's working great. Had a nice, warm car and crystal clear windshield the whole ride to work this morning :) Many many thanks to you Robert for all you do!!!

[@RobertDIY]

Awesome! Glad you had a successful repair process.

[@lio6]

You are definitely the MAN when it comes to volvos! Thank you for all you do to help us save a lot of money on repairs! Your descriptions are so clear that impossible task becomes possible! Respect👍

[@RobertDIY]

Yuriy Bruks Thanks for watching.

[@dno440]

Thanks Robert your videos are awesome, I feel more comfortable just knowing how fix this stuff w/someone showing me how to do it first, keep doing what your doing; you obviously are helping a lot of us...

[@SixteenChickens]

Robert, thank you for this video. I was able to replace my heater core for about $40, when most shops I talked to wanted at least $250 for the job. Volvo quoted me $600.

[@RobertDIY]

+SixteenChickens you are welcome.

[@5353erock]

Hey Robert thanks for these videos . after watching this I found the confidence to replace my heater core on my 95' 850. I also had to replace the heater hose junction box on the fire wall as it turns out . went ahead and did the upper torque mount bushing too . thanks for making these videos and making these repairs approachable.

[@RobertDIY]

Eric Pettus Very nice. Thanks for watching.

[@jeffstevens9912]

Thanks Robert, I did this task two weeks ago. If it fades away I can live with it. It's only strong in the beginning once there's heat there's less of a smell. I purchased from E-Bay Motors it was around $35-$40.00. I follow your instructions all the way out. I was finished in 1 to 1 1/2 hour. Thanks again you're awesome!!!! Have a great day buddy!!!!! Jeff Stevens

[@dcrasta]

Love your videos . Did the wife’s v70 in about 2 hours start to finish. Your delivery and content is top notch. Thanks again for the effort to make this video.

[@RobertDIY]

Glad it helped.

[@craigcampbell4657]

Thanks so much. Once again your efforts have saved me hundreds of dollars!. Got it done in about three hours with beverage breaks. Garbage bag to catch coolant=lifesaver!

[@RobertDIY]

Glad it helped, thanks for watching.

[@RobertDIY]

Hurrah! Glad it helped and thanks for watching.

[@robbiewilson157]

Robert you mentioned pinching the hoses outside the firewall and that is exactly what I did. I bought a set of extra long needle nose pliers from harbor freight (one straight and one offset but doesn't matter- they are about 18 inches long) Those reached down to the hoses, then I used a couple of zip ties to clamp the handles closed on each hose. That kept the water in the cooling system and out of the heater core. I got about a quart or less of coolant when I pulled the lines inside which I caught in a garbage bag. No fuss, no muss, no MESS! :) ALSO I do recommend the Swedish Auto Parts core it seems to be built better than Volvo OEM. I have replaced 2 in 2 different cars without issue. Thanks!

[@RobertDIY]

Thanks for sharing.

[@markregenthal2175]

I just want to say I've been working on a 1999 S70 that I have my daughter driving. It needed a variety of work and your postings have been the best. Your video and explanations are clear and concise. You have helped me more than words can express. Happy New Year and thanks, thanks, thanks!

[@RobertDIY]

+Mark Regenthal Hey Mark, you are welcome. Glad you found them.

[@savannahhernandez7510]

Mark Regenthal Would this also work on my 1997 Volvo 960?

[@dancoleman3440]

Hey Robert, Just wanted to say thanks for all you do. When I'm about make a repair on my 850T that I haven't done before or to refresh my memory about one I have your videos are among the 1st I seek out. I just viewed the heater core r&r ( did one a long time ago on an s70) and not only great instruction but as a bonus a suggestion on a low cost and respected core I had never known about. Thank you!

[@RobertDIY]

You are welcome

[@RobertDIY]

Thanks for watching and glad it helped.

[@rushenge]

Just replaced the heater core in my 1997 Volvo 850. Compared to other heater cores, this was a fairly easy job. Robert, thanks. Your video was a big help. Of course I didn't listen real close, and made a mistake by pulling out the glove box. As you said, that is not necessary on an 850. To save time I left all the hoses connected and caught about a gallon of anti-freeze in big trash bag. That worked well with no leaks or spills. Thanks again.

[@RobertDIY]

You're welcome. Thanks for watching.

[@PascalBouwman]

I just flushed the cooling system, and changed the thermostat and the heater core. Thanks to your videos I managed to do so.

[@RobertDIY]

Very nice.

[@cmajorg]

Thanks for the videos Robert. I have a 1998 S70. So far using your videos I have changed the starter and the heater core. Everything you instructed to do was spot on and nothing was left out, so I thank you and for anyone out there who wants to work on their Volvo, Robert's videos are the most detailed and helpful ones out there.

[@RobertDIY]

+cmajorg thanks for watching.

[@cmajorg]

So about a month ago, I had a hose come off the top of my radiator and spill fluid out, A friend bailed me out by bringing some antifreeze, which I don't believe is the recommended kind. Will I cause any damage by using the wrong antifreeze? I just replaced the heater core and figured if I have to flush out the old antifreeze to prevent any problems, now would be the time to do it.

[@RobertDIY]

+cmajorg short term is not a big deal. Just flush the system and get the better stuff in there.

[@stevenbrocksen]

I do have to say I would be "up a creek without a paddle" if not for your videos. Super easy to follow and have saved me a bundle of money I did not have! Thank you so much Robert

[@RobertDIY]

You are welcome.

[@TheHfain81]

I got steam from the dash today. I've been bought the core, two years ago. It's getting done today! Thanks Robert!

[@RobertDIY]

Well, let us know if you blew the engine.

[@RobertDIY]

You are welcome. Glad you found it and thanks for watching.

[@ndmoody81]

Thanks Robert your videos has been a great resource. my 98 v70 had a heater core leak that resulted in a warpep head. I sent out the head and followed your videos. The v70 lives again! Thank You

[@RobertDIY]

+ndmoody81 very nice.

[@RobertDIY]

Thanks man. And thank you for watching.

[@Ishtta]

Again, thank you Robert. Had my heater core crack on the bottom and spring a catastrophic leak. Fortunately, I was city driving and was able to pull over and shut her down before the engine overheated. Just installed the new core last night, and all seems good so far. Thank you for the step by step, saved us the headache. ABS swap is next :)

[@RobertDIY]

Hassan Bleik Very nice. Thanks for watching.

[@kristupasantanavicius9093]

This was my first DYI car repair. Took me 4 hours :D There was coolant everywhere under the carpet. Everything was soaked, but the carpet was dry. The trash bag idea really helped. I caught all the coolant in them.

[@RobertDIY]

Good deal, thanks for watching.

[@Dabigbadass]

I just put a heater core in my 2001 jeep Cherokee sport and it by far was the worst job I have ever had, took damn near 14 hours. My next job is a 98 volvo heater core which is way more simpler. I don't have to remove both front seat, center console, steering. wheel, the whole dash board, a.c. lines and a shit load of other things. Thank you for this video I really do appreciate you taken the time out of your day to help o ther mechanics out. you are the man

[@RobertDIY]

+jamie strothoff ouch! Thanks for watching.

[@eddiewilson8051]

Thanks Robert you have saved us money on heater core replacement and a motor swap on my S70. Thank you for including mistakes and mishaps so we get a real sense of what can go wrong and overcome it!

[@RobertDIY]

Keeping it real. ;) Glad they have helped you. Thanks for watching.

[@AMHobbs1974]

Thank you so much for your videos Sir!! You've saved me so much time and money working on my car!! I've never "tackled" a Volvo! Your videos are making it very easy!

[@RobertDIY]

+Ann-Marie Griffeth Good deal. Thanks for watching.

[@tedn.1627]

Hi Robert. I replaced my 1993 850 heater cote yesterday with your video and part recommendation. Plastic bag was instrumemtal. I also used 2 plain Harbor Freight clamps to pinch the radiator hoses (though about 3 qts of coolant came out anyway). But plastic bag caught it all! Thanks for the video, couldn't have done this alone. Thanks again!

[@RobertDIY]

+Ted N. Nice, thanks for watching.

[@errol_]

always a pleasure watching and learning from your videos. thank you for sharing the knowledge!!!!

[@RobertDIY]

Errol M You are welcome. Hope it helps you keep a good car on the road.

[@timowen1144]

Thanks for the directions. I changed out my heater core in just over an hour. No more leak!

[@RobertDIY]

Nice. Thanks for watching.

[@dreambuilder4536]

Thank you for the detailed explanation and demonstration!! Mine just started spewing coolant smoke or of my air vents, will definitely be rewatching when the v cute arrives! Thanks again Robert, you truly are the best!

[@RobertDIY]

You are welcome

[@johnduffy228]

Glad I watched this. With the cold weather and the heat being on now I smell the coolant a lot. Will definitely be changing the heater core this weekend. Thanks for the help!

[@RobertDIY]

+John Duffy You're welcome.

[@HighwayStar70]

Robert...I just put a heater core in my 1998 S70...got it off e-bay...thanks for the how to video....it was right on the money....your the Man!

[@RobertDIY]

Glad it helped. Thanks for watching.

[@stevehays5340]

Thank you for all the videos you put out. You do such a great job explaining the process. I am not much of a mechanic type, but I bought a 97 Volvo 850 GLT for my son and your videos have been a tremendous help! Just wanted to say thanks

[@RobertDIY]

you are welcome.

[@Certifiedretard66]

Robert, I wish to give my gratitude and appreciation towards the videos that you make. Especially this video. You saved me over $650 dollars in money that I didnt have!. Again, thank you for all your videos and keep them rolling!

[@RobertDIY]

Awesome! Glad you found it. Thanks for watching.

[@seppb7430]

Hi Robert, thank you very much! Just finished replacing the heater core on an 98 V70 and did so without the slightest problem - thanks to your description!

[@RobertDIY]

Glad you found the video. Thanks for watching.

[@robertflahiff541]

Hello Robert - As always, very helpful videos. I have this leaking heater core problem right now, and have been doing prep work with the goal of changing out the core next weekend. After "short cutting out" the core, I decided to start the clean-up process. While steam cleaning out the coolant that accumulated in the carpeting, I noticed that discolored fluid was coming up from the spot in the carpeting that the floor mats anchored to. So I decided to investigate further and determined the easiest thing to do was take out the seat and totally remove the carpeting. Thanks for the video "How to remove the front seats of a Volvo 850..." After I removed the entire floor mat I was left to clean the "waterproof" sub-floor. But time had taken its toll on the rubberized top layer of the sub-floor and it had cracked. A quick push of the finger next to the cracks showed me where about a half-gallon of coolant had been hiding for quite some time. End of the day, I saw no easy way to correct this, so decided to go on ahead and remove the rear heat ducting and cut out the sub-floor entirely. Long story short - Double check that the coolant hasn't broken through the "waterproof" layer and has been absorbed by the inch of foam on the floor. Thanks again for the videos. Robert - Leksand Sweden

[@RobertDIY]

+Robert Flahiff Yes it can be a mess.

[@swedenpaul11]

Hi, I currently have the same problem. How did you drain the foam part? How did you fix the cracks in the rubber topping of the foam part? Thanks!

[@RobertDIY]

Great move. I forgot my drain pan that day so I didn't do that. Thanks for watching and for your comments.

[@mattj456]

this video was super helpful, thanks. just replaced mine in my ‘97 850 because the windows were fogging up with coolant residue. it had the original core in it and it looked pretty bad. spilled a little coolant in the process but otherwise it went smoothly. thanks robert!

[@RobertDIY]

You are welcome.

[@svostar4]

Robert , WE have a 2000 S70 , your videos have helped me so much. Nice job explaining and the great tips are well thought out. Not to mention you have saved me a bunch of money doing repairs myself. Thank you so much & God Bless, Jeff

[@RobertDIY]

+Jeff Starling Cool, thanks for watching.

[@philrupp7124]

I appreciate the video. Your recommendation of Swedish Car Parts was very helpful. Price, not including shipping, has increased 50%!! The promise of life time warranty was irresistible! Taking the car to a reputable repair shop is no guarantee the replacement is done correctly. The core I replaced probably didn’t leak. When that core was placed (by a local reputable shop), the seals were not replaced. The seals were brittle and one had been crushed during installation, so your recommendation of placing the seals on the tubes and lubricating them with coolant made a great deal of sense. The insulation in the footwell under the carpet is saturated with coolant. I washed the footwell carpet at the car wash twice. I just am going to replace the insulation; there is no saving it. Thanks again for your efforts. I wouldn’t know where to begin without your guidance. If you have suggestions as to what to replace the insulation with, I am still searching.

[@RobertDIY]

Try to find some from a salvage yard vehicle.

[@RigsPGT]

Robert, I just got a 98 S70 for the family and I'm glad I found your videos, very informative and to the point! Thanks so much for taking your time to help us (Volvo newbies) out and God bless you sir! Wish I could have done some research before finding some bugs in the car (PCV might need overhaul, 4 struts had to be replaced, rear driver's side sits 3/4" lower than the other, passenger side axle needed to be replaced, broken antenna, missing fuel door, door lock actuators have a mind of their own and the windshield was extremely foggy (probably the core leaking).

[@RobertDIY]

Hi and thanks for watching. Glad I have a few video's that are useful and I hope you got a car at a good price. The multiple issues are usually why people bail on them. I would start with the HEATER CORE, that one can destroy the motor. Then do the PCV before you blow some motor seals. Other than that, others are just fun tinkering things to do when you have time.

[@RigsPGT]

The car has only 127k and I got it for $1k and despite these little things, it's a great one. Upon inspection I already knew it needed struts and shocks, front brakes and alignment due to camber issues wearing the tires and possibly a couple of door lock actuators which aren't priority. I wasn't aware of the PCV on this car and after watching your video, I went ahead and did the glove test. To my findings, the glove doesn't tend to get sucked in but on the other hand it doesn't shoot up straight so I'm assuming I can get by another k miles or so. Dipstick doesn't blow smoke at all and judging from the wear and tear, the owner didn't do much maintenance on the car. Luckily he had changed the timing belt at 75k which I plan on replacing it soon. So far I'm liking Volvos and plan on selling my beloved toy (94 Probe GT turbo) to get a T5 and go from there :)

[@RobertDIY]

Sounds like a good plan. If the glove doesn't blow up it's not urgent. Sounds like the car is NA which means that you may do good by changing the flame trap. That should be serviced every 10,000 miles. Some people toss the thing but I believe it's there for a reason so I just replace them.

[@johnking9160]

Thanks, Robert, you da man! We just replaced the heater core in my son's 1999 S70 using your video as a guide. It was easy as can be and only $35 now for the Swedish Auto Parts replacement core. Saved my favorite college student $100, at least.

[@RobertDIY]

Nice.

[@RobertDIY]

Good, thanks for watching.

[@iliafresco]

Thank you Robert! Your videos turned my sons 1999 Volvo into my hobby. Every time something breaks, my mechanic tells me “go watch those videos and do it yourself...” now we just joke about it - every time I come with my cars, he asks about the Volvo lol PS. Just in case - if someone decides to clamp hoses under the hood - it is very easy, just make sure you clamp the one that is on the bottom. And use the bag anyway.

[@RobertDIY]

Thanks for sharing.

[@cjcmlk1]

I watched this video last night, picked up my new core this morning and 45 mins later....HEAT IS ON!!! You're the MAN Robert👍👍

[@philliphorton6451]

did you get the same heater core used in this video?

[@cjcmlk1]

I got mine at auto zone for $60 something. It is China made, hard black plastic with aluminum crimping on top and bottom. Only issue was that the screw hole on the bottom of the core where it attached to the lines wasn't completely drilled out...

[@cjcmlk1]

Spectra is the brand

[@RobertDIY]

+cjcmlk1 very nice.

[@perdasofpy7372]

Hey Robert I have a 2006 Volvo s 60 , it blows hot and cold air, I've had a stepper motor and door accuator put in and it still blowing hot and cold air, diver side is hot and passenger side cold, I just don't want to get ripped off by the auto repair shop, this my first Volvo for me, learned a lot about the car watching your videos

[@RobertDIY]

Perdasofpy The system is somewhat complicated with split controls (driver/passenger). If you turn the temp full hot or full cold it should respond. If you have temp sensors out, it will not know how warm or cool one side of the vehicle is and not respond properly. The dealer has a code reader that can tell what exactly is wrong and fix it. You might have to bite the bullet on that one.

[@emanuelefloridia8767]

Hi ! I have been loosing coollant from my Volvo C30 ...and really thought it was the head cracked or the gaskets....finally after your video I got my heater replaced..it was leaking! thanks for your video it was very usefull!

[@RobertDIY]

Glad you found the leak.

[@lowpulse8729]

I’ve been following and using Robert’s advice since buying my ‘02 cross country and now that my own heater core has blown this past weekend? I’m tackling this issue tomorrow 🤦🏾‍♂️

[@RobertDIY]

kzbin.info/www/bejne/ZmOknIOsiZaVjMk

[@daniellesdilly]

love this car more and more .. cant expect a core to last forever but I honestly expected a minimum 6 hour book time with dash removal.. Very pleased to find out otherwise. Thanks Robert

[@RobertDIY]

You are welcome. ;)

[@SurgeonBand]

Thanks for the video Robert. I replaced my core about a year ago with your suggested volvonest core and Ive got some leaks again. Just an update I have to investigate further because I feel my issue could be with the seals themselves. Thanks for the videos. Will update when I know more.

[@RobertDIY]

Yes, pull the panel and make sure it is totally dry under there.

[@ukgodsavethequeen]

One of the best step by steps I've seen on KZbin. Thanks for posting.

[@RobertDIY]

You are welcome. Thank you for watching.

[@brammuns5953]

Thx to you Robert i was able replace my own heater core today. You are the best!

[@RobertDIY]

You are welcome

[@fishhead1227]

Dude! Exactly as you described, I ran the heat and it smells slightly of coolant. I looked up the Ebay seller and he's got the parts I need. You are a valuable resource. I'm use to 8-10 hour heater core jobs from GM and Ford, I had no idea it was this well designed and simple.

[@RobertDIY]

fishhead1227 Glad you found the video. Thanks for watching.

[@undertakr]

Thank you very much! Volvonest part plus your instructions work good so far. Very clear directions. Thanks for all the little bits of information you include throughout the install.

[@RobertDIY]

+undertakr Thanks for watching. Glad they helped.

[@michaelsliwinski8044]

Thanks for sharing Robert! Very thorough. provides me the confidence to order the part and undertake the repair myself.

[@RobertDIY]

best to do it before you blow the engine.

[@ruairioconnell8040]

Fantastic video, thank you. One note for anyone working on a V70 - there's a knee bolster on the passenger side, and it seems to be necessary to remove it to access the heather core. You will see it once that panel under the glove box is removed. It is held in place by 3 x 13mm nuts, and will need to be pulled and pushed with some force to remove and install.

[@RobertDIY]

What year is the vehicle?

[@ruairioconnell8040]

Robert DIY Mine is a 1998 V70 AWD

[@RobertDIY]

Cool.

[@hearandnowrecordings]

Your a Champion , much love from Australia ....Robert

[@markosman334]

Excellent advice, did the job perfectly for my 98 V70 Tdi and with a new 2nd hand blower motor too I saved myself £1400 Volvo garage quote

[@thegrassisntgreenertodaytony]

Well, I did this job yesterday. You made it look as simple as it was. 1.5 hours all told. :)

[@RobertDIY]

Excellent!

[@jimleitholf4765]

Another great video, Robert! Watched your "how to" and replaced my 850's core without a hitch. Thank you!

[@RobertDIY]

You are welcome.

[@RobertDIY]

kzbin.info/www/bejne/kKLHeXenfLCMjJI

[@ivokraaier9740]

already removed my comment after finding out that the kickboards clip onto the heater core box but thnx for the quick reply Robert, really appreciated. managed to replace the core without much trouble thanks to this video! although i did find it easier to unscrew the pipe retainer screw first and remove the pipes while the heater core box held itself in place, then unscrew the 4 screws holding up the box.

[@RobertDIY]

Good deal

[@pepe-it6ru]

shop wants $780 for heater core replacement, thanks to this video I was able to do it for $74. I know you get this a lot but thank you truly for what you do robert. (If anyone is watching in 2023 the part is now $69 on their website plus $5 o-rings.)

[@RobertDIY]

thanks for sharing. Glad you were able to do it.

[@michaelsilvers5787]

Hey Robert. I just wanted to comment. Replaced my core with Swedish Car Parts core in 2014. Had a leak and purchased a new one this past week. Their price has gone up. I think it was $81 with rings and shipping. They also now offer lifetime warranty. Keep the receipt. Also wanted to mention that as I am looking at this core, it did not leak. The case is bone dry. My o-rings were the culprit. Replacing anyway since I have it apart. Worth every penny! Thanks for the video

[@michaelsilvers5787]

Also, for those with Dolby processor, removing the bracket makes things much easier. Don't think it's even possible with it in there

[@RobertDIY]

👍🏾

[@MrFreeze79]

wow... this looks a heck of a lot easier than most cars out there where you have to take the whole dashboard out! i may just buy a volvo!

[@RobertDIY]

Yes it is pretty easy.

[@wesmiller6762]

this is no doubt a life saver video but Robert is the real deal. These videos have inspired me to take pride an keep my car on the up.

[@RobertDIY]

Good deal.

[@christopherscheno9918]

Another very helpful repair/replacement video. Saved me $400-$500 in labor (quote from Volvo dealership). For a part that costs only $65 w/tax. Simple job. No great strength needed to do any aspect of this job. Turning screws and moving carpet and wiggling the core. One hour…tops.

[@RobertDIY]

Glad you found it useful.

[@christiankrob8043]

Thanks Robert!!!!!! Watched a lot of videos but yours are by far the best!

[@RobertDIY]

Thanks

[@davidlind4588]

Thanks again Robert, Thanks to your video I just replaced my leaking heater core, keep on posting, from London UK

[@RobertDIY]

Awesome!

[@ogremgtow990]

Thank You Robert for adding the link for the replacement part at Swedish Parts.

[@RobertDIY]

You are welcome

[@cuidadotube]

Muchas gracias Señor Roberto. Muy buena información. Thank you so much Mr. Robert. Very good information.

[@RobertDIY]

Pablo Hernandez You are welcome.

[@wyb80]

Great video... Not an easy location to film but still very clear! Thank you.

[@RobertDIY]

wyb80 Thanks for watching.

[@kyledupont7711]

I checked the heater core twice in the the $500 Volvo s70 we bought, couldn't see any leakage but it is in fact leaking. only leaking when you turn the heater on and you can just smell it coming out the vent. tackling that job today and hopefully that gets rid of that nasty smell the car has. the car has come a long way in these past couple weeks, no more check engine lights and his sales up the road smoothly. very nice car at this point.

[@RobertDIY]

+Kyle Dupont Good to hear. Keep it rolling.

[@5CGQ]

Kyle Dupont . Thanks; that's exactly like mine. In addition the inside of the screen mists up, the opposite of what is supposed to happen!

[@jgill8093]

Helpful tutorial, Thanks for sharing your knowledge, something less secure technicians finds hard to do.

[@RobertDIY]

Pretty easy on these cars.

[@euromobile900]

Thank You Robert! You are a godsend for us trying to keep these cars on the road. The MTC brand core from IPD is also crimped-together, so I am going to try that on our car that just developed a leak. I will let you know if it ever leaks!

[@RobertDIY]

Ok

[@euromobile900]

@@RobertDIY Thinking of you and Diane. I hope things start going better. I installed the MTC/IPD heater core yesterday and it leaked immediately at the o-rings. Thought I pinched the o-ring, so I took it apart and checked and they weren't pinched. I put new o-rings in it and it still leaked. I came to find that this new core was defective. One of the holes where the o-ring sits was poorly molded and actually oval-shaped, so it would never seal right. I ended up reinstalling the old one. I returned it and bought the one from Swedish Car Parts. I should have listened to you in the first place! I wouldn't be doing this repair three times in a row!

[@euromobile900]

I am so sorry for your loss, Robert. Know I'm thinking of you!! I tried the Swedish Car Part heater core. It had the same problem with the poorly-molded o-ring bosses. I may make a video about it. I hope you are as well as you can be, considering the horrible time you have been through. Thank you for all your good will and support!

[@bballaman92]

Used your video and part. Thanks! Vovlo S70 1999 would abruptly turn off after the replacement until I started filtering coolant into the system. After all coolant was put back, my Volvo started running without dying off. I'll take it for a ride later and give you an update.

[@RobertDIY]

bballaman92 Coolant will have nothing to do with the car running, unless it is overheated. You have some other issue.

[@dogmonster27]

Hey Robert, just replaced my 99' S70's heater core today with help from your video. Just in time for the winter. Thanks a ton and keep up the great work, Happy Holidays :)

[@RobertDIY]

Awesome! You too

[@SAMS1N]

@@RobertDIY Hey brotha this is Samson out of Seattle... Been watching your videos for 5 years now.. Do you have an email?Want to send my thanks and some pics .

[@macmen007]

Thanks Robert!.... Blessing to you and yours. I used your heater core video, everything you said was correct. When I refilled the coolant with what ran out, I had about a pint remaining that I could not put back into the coolant resevoir (it was full). I restarted the vehicle and and after some time in went down some, but the excess fluid I still have in a container, in case the level does go down.

[@RobertDIY]

Add it the next morning.

[@macmen007]

@@RobertDIY 10-4 !

[@clarencestone5639]

hey Robert Clarence again , got an estimate of $675 to $850 to replace the heater core in my v70 t5 . ordered the core from swedish parts guys and it took me about 3 1/2 hours to do it myself including changing the front two seats ,and letting the car run for about 15 minutes to check for leaks .so far so good .some day I will be brave enough to try a timing belt change ,maybe . thanx .

[@RobertDIY]

LOL, if you don't try it, have it replaced by someone. Thanks for watching and sharing.

[@levitate2me]

Wow this vid is great. Helped me avoid pricey mechanics and get it done by myself in the garage. Im pretty car dumb, and this helped me get it done without a hitch.

[@PaulSmithDYL]

Hi robert, I really like your videos . They are extremly helpfull! Keep up the good work. I jusr had a heater suddenly dump the coolant and will be opening it up today to replace it. I pinched the hoses off to stop the leak and refilled the system to drive it home It took well over a gallon. I left the cap loose thinking there would be less chance of it leaking past my hose pinchers but the car wasnt happy with thet. After about 4 miles the low coolant light came on and i had to stop and refill. after anothe 8 miles the light came on again and weht out and back on. I stopped the refill but the coolant was gushing out from the loose cap. The temp gauge never want above the normal half way. I waited 20 min and toped it again, and drove it the last mile home. I hope it will be ok.

[@RobertDIY]

+Paul Smith yikes!

[@sampayne04]

Robert, great stuff -- thank you! This is exactly what's wrong with my Volvo. So glad I found this. Keep up the good work.

[@RobertDIY]

***** Cool, thanks for watching.

[@willrogan955]

Nicely done Robert I believe the Swedish parts and the DP on eBay are the same company. Inexpensive and appears to be very good quality. I discovered my heater core was leaking as I was replacing the carpet with a custom-made ... by me , house carpet. A heat gun helps mold the carpet. Tricky but the end result is an expensive beautiful auto carpet

[@RobertDIY]

Nice, thanks for sharing

[@tonysalt8714]

Robert, many thanks for your excellent detailed video. I followed your instruction to replace what I thought was a leaking heater core. It was actually one of the ' O ' rings that was leaking so I replaced both. The only difference between my car( C70 convertible 2002 Mk 1) is that between the heater core and the back of the radio is the Dolby processor, with that removed, the heater core was easy to remove. Keep up your excellent videos. The self-isolation (Coronavirus) here in the UK is giving me plenty of time for work on my car. Stay safe young man, and again, many thanks. Tony Salt.

[@RobertDIY]

Seals leak when people tighten the screw to hard.

[@tonysalt8714]

@@RobertDIY I've was very careful not to overtighten. Unfortunately I wasn't careful with the trash bag to catch the coolant, it took longer to clean up the coolant than it did to remove and replace the heater core. Sometimes yer just gotta laugh.

[@RobertDIY]

Ouch

[@williweber3016]

Thx for your perfect video lessons! The next problem with my C70 convertible that is easy solved because of your video! Thank you!!

[@RobertDIY]

You are welcome

[@OvlovC70]

Getting ready to tackle this job on my C70.. This video has made me much less scared of the process! haha I'll definitely be trying out the ebay core you used.

[@RobertDIY]

Logan Abner Mine is still holding strong.

[@nickthetricy]

Well you get it done yet

[@beoutside]

Thanks Robert , going to town on this repair after your great video. 1999 v70 x/c still strong after rebuilding head.... blown hole in exhaust valve... great info on that repair as well. Hope you and yours are well. PS I get most of my parts from FCPGroton.

[@RobertDIY]

Donny McClure Groton, old name. lol

[@danielsalt363]

Absolutly excellent video Robert, looking forward to try and fix my sons v70 -97 tomorrow. At first glance his lines penetrate the firewall on the other side in the enginebay but I guess pretty much same same. Thanks!

[@RobertDIY]

you are welcome.

[@eddiepadilla1078]

Thanks for the video! I'm trying to figure out how to get access to the a/c evap and expansion valve and this video helped me plan a path of attach. Poor design on the 2002 S60!

[@RobertDIY]

Eddie Padilla Hmmm, not sure on that one.

[@tibork3845]

Thanks a lot! Had to do this on our 2000 C70 also. You're a savior!

[@RobertDIY]

You're welcome!

[@TOMCATDRIVER]

Nice job on the video. Made this job very straightforward and easy. Thanks.

[@RobertDIY]

TOMCATDRIVER You're welcome. Thanks for watching.

[@itspnutbutterjellytime5488]

Thanks again as always great information Just finished my core replacement . Went well was easy and quick .

[@RobertDIY]

Great to hear!

[@bernardhurd1401]

You da man big dawg!! I love your videos even after 14 plus years as a mechanic!

[@RobertDIY]

Thanks for watching.

[@bernardhurd1401]

Maybe asking for a lot but by any chance do u have an extra mount press i can borrow!! :):):):):)

[@RobertDIY]

Yes.

[@kimandredybdahl9304]

Thank you Robert for making this worklog. This is a job i need to do on my 1999 V70.

[@RobertDIY]

Well, take car of it before you blow your motor. I personally know of two people that lost their cars due to leaking heater cores.

[@sandervanewijk6668]

Thank you for your video After seeing the video it was a one hour job

[@RobertDIY]

Awesome!

[@durandel1020]

I'm about to do this job myself. Thanks for making such a great DIY video.

[@taggarthegarty9766]

thank you very much for this video, I am currently fixing up a volvo 850 wagon and this helped alot

[@RobertDIY]

Good deal. Thanks for watching.

[@davidmacdougall2702]

pobert you have helped me so much and we have not met! THANK YOU!

[@RobertDIY]

you are welcome.

[@poepjin]

Great Job! Thanks a lot. It's a lot easier than I thought. Keep up your helpful videos.

[@RobertDIY]

+poepjin ok.

[@jacquelinewilliams375]

Thank you, so much Robert for your video, now I can replace my own heater core. Wonderful information, and Thanks again!

[@RobertDIY]

Jacqueline Williams You are welcome.