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2009 xc90 3.2 r design awd slight antifreeze smell in cabin

Help, Advice, Owners' Discussion and DIY Tutorials on Volvo XC90s. The XC90 proved to be very popular, and very good for Volvo's sales numbers, since its introduction in model year 2003 (North America).
chefmarkt69
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2009 xc90 3.2 r design awd slight antifreeze smell in cabin

Post by chefmarkt69 » Sun Dec 22, 2019 6:31 pm

Hello, I have been wondering as of this winter when I turned the heat on. I smelled a very slight smell of antifreeze in the cabin of the car. The heat works great, I checked my anti freeze level and it was low. I add more antifreeze but I do not see any leaking on the ground. I put down cardboard box on the ground to double check but still none.Does anyone know what this might be? Thank you

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RickHaleParker
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Re: 2009 xc90 3.2 r design awd slight antifreeze smell in cabin

Post by RickHaleParker » Sun Dec 22, 2019 10:29 pm

Could be a leaking heater core. Does the inside of the windshield fog up easily or have a residue on it? It does not take much of a leak so you most likely will not find antifreeze in the floor well.
Platform: P80 1998 C70, B5234T3, 16T, AW50-42, Bosch Motronic 4.4, Special Edition package, Plant: Uddevalla Sweden.

Platform: X40 (Nedcar) 2003 S40, B4204T3, 14T twin scroll AW55-50/51SN, Siemens EMS 2000. Plant: Born Netherlands.

Platform P2 2005 XC90 T6 Executive, B6294T, 4T65 AWD, Bosch Motronic 7.0,
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oragex
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Re: 2009 xc90 3.2 r design awd slight antifreeze smell in cabin

Post by oragex » Mon Dec 23, 2019 3:31 am

As above, look with a flash light under the dash, drv side, look where the two alu pipes are entering the heater, perhaps the two o-rings are leaking

chefmarkt69
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Re: 2009 xc90 3.2 r design awd slight antifreeze smell in cabin

Post by chefmarkt69 » Wed Dec 25, 2019 7:05 pm

Thank you both, I did not see and residue and or leaking fluid.

chefmarkt69
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Re: 2009 xc90 3.2 r design awd slight antifreeze smell in cabin

Post by chefmarkt69 » Wed Dec 25, 2019 7:07 pm

It doesn’t do it all the time, like this week I have not had to add any antifreeze.

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Re: 2009 xc90 3.2 r design awd slight antifreeze smell in cabin

Post by oragex » Thu Dec 26, 2019 4:09 am

Have a look at the water pump. These are known to fail on the 3.2. The pump has a hole to check for leaks. Use onlu quality brands if replacing it - such as Aisin. May replace the thermostat while there. For the antifreeze, I recommend Volvo concentrate+distilled water. Also look under the coolant tank, see if there are traces - disconnect the level sensor before lifting it. May also look at the top of the radiator for any leaks

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