Volvoboi24 Posted October 16, 2006 Report Share Posted October 16, 2006 Hey all, I've used the search feature, from what I'm gathering I think its the heater core, but making sure...When i turn on the heater, a burning smell comes though... most of the posts i've read say its a sweet odor with a bad heater core from leaking coolant... both my C70 and 850 have this problem what do you guys think it is? Link to comment Share on other sites More sharing options...
bmcintyre Posted October 16, 2006 Report Share Posted October 16, 2006 Are you losing any coolant??? maybe having to top off every week or two? if so then its the heater core.....if not...then you've got rats in the system man!!!!!!!!!!B Link to comment Share on other sites More sharing options...
Ceenit Posted October 16, 2006 Report Share Posted October 16, 2006 I have the very same issue and am about to change my heater core. I haven't had any noticeable coolant loss, but I don't think it takes much coolant to start the smell.If your not losing noticeable amounts of coolant, then consider yourself lucky that the leak is not that bad. But still go ahead and switch out the heater core.Note that is is defnintley more of a coolant or sweet smell than a burning smell however. Burning smell may be some old leaves caught up in the system buring off. Link to comment Share on other sites More sharing options...
fastboy Posted October 16, 2006 Report Share Posted October 16, 2006 the smell should make you want to go for some pancakes... love that maple syrup. If its an actual burning smell, it might be your heater motor frying or the resistor on the way out. Both of those would happen swiftly though, not over a long period of time. Link to comment Share on other sites More sharing options...
Gioseppe Posted October 16, 2006 Report Share Posted October 16, 2006 the smell should make you want to go for some pancakes... love that maple syrup. If its an actual burning smell, it might be your heater motor frying or the resistor on the way out. Both of those would happen swiftly though, not over a long period of time. mmmmm pancakes. this man speaks the truth though, if it ain't the heater core it's worse. Link to comment Share on other sites More sharing options...
ViperVette Posted October 16, 2006 Report Share Posted October 16, 2006 Heater Core should be a sweet smell. Not quite a burning smell. Link to comment Share on other sites More sharing options...
Ceenit Posted October 16, 2006 Report Share Posted October 16, 2006 Question" When replacing the heater core, do you also need to purchase the "o-ring" or the "o-ring kit". I wasn't sure that came with the heater core of what parts may be reusable from the old.Thanks Link to comment Share on other sites More sharing options...
fastboy Posted October 16, 2006 Report Share Posted October 16, 2006 mmmmm pancakes. this man speaks the truth though, if it ain't the heater core it's worse.OH IT IS THE SEASON FOR THAT SWEET GOODNESS. Link to comment Share on other sites More sharing options...
bmcintyre Posted October 16, 2006 Report Share Posted October 16, 2006 Question" When replacing the heater core, do you also need to purchase the "o-ring" or the "o-ring kit". I wasn't sure that came with the heater core of what parts may be reusable from the old.ThanksNothing comes with the core at least from Eeuroparts. I bought the kit from groton and just used the two lil black orings where the core connects with the pipes. the whole thing took an hour. B Link to comment Share on other sites More sharing options...
fastboy Posted October 16, 2006 Report Share Posted October 16, 2006 buy the o-ring kit seperate. The volvo one is just the heater core as well. Link to comment Share on other sites More sharing options...
JoshV70 Posted October 16, 2006 Report Share Posted October 16, 2006 You do not want this...S80's are crap. Link to comment Share on other sites More sharing options...
Volvoboi24 Posted October 16, 2006 Author Report Share Posted October 16, 2006 Ok, heres a followup question, if I just raise the temperature past 72 degrees I smell the odor without turning on the actual climate control. Is it still the heater motor? Link to comment Share on other sites More sharing options...
Ceenit Posted October 17, 2006 Report Share Posted October 17, 2006 Again, my guess would still be the heater core. Adjusting the temp (without turning the fan, AC, or any other power controls) will also adjust the flow of fluid through the heater core. Any time it senses that you need more heat than is available through the outside temp, it will adjust the flow through the heater core to compensate. Link to comment Share on other sites More sharing options...
bmcintyre Posted October 17, 2006 Report Share Posted October 17, 2006 Big suggestion............ pull back the carpet next to your gas pedal foot and remove the black kick plate(its one screw) Look at the bottom of the core, If you can see any signs of coolant...then bingo you've got a bad core.........B Link to comment Share on other sites More sharing options...
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