Coolant smell from vents, heat not great (08 550 sport)
01-02-2018, 08:35 AM
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My Ride: 2008 550i M-sport 4.9L V8
Coolant smell from vents, heat not great (08 550 sport)
As the title suggests, when the cabin heat is running I get a stench of engine coolant from the vents, and it doesn't blow warm air unless the engine rpm is over 2k. I can start it and let it idle for 30 minutes but the air from the vents is still cold, so to get heat I have to be driving. This morning I got a low coolant warning and had to put more in the reservoir.
So I'm guessing the heater core is leaking, but I'm not finding any puddled coolant anywhere. Anyone else with a 550 have this issue? How best to diagnose the problem?
So I'm guessing the heater core is leaking, but I'm not finding any puddled coolant anywhere. Anyone else with a 550 have this issue? How best to diagnose the problem?
Last edited by Kalepsis; 01-02-2018 at 08:36 AM. Reason: Letters
01-03-2018, 05:49 AM
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My Ride: 2007 530xi: Sport, NAV, PDC, HUD, Cold Wthr, CA, Logic 7, HD Radio, SAT, Custom NCS coded options 2008 535xi: Sport, Night Vision, NAV, PDC, HUD, Cold Wthr, CA, Logic 7, SAT, Custom NCS coded options, Rear Seat Heat Retrofit, Passport 9500ci
Model Year: 2008
Engine: N54
Get under the car, remove the trays and find out where you are leaking.
Water pump, hoses, tank ?
Water pump, hoses, tank ?
01-08-2018, 08:10 AM
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My Ride: ,retro sport button,comfort seats,m5 front and rear swaybars,pullbars,550 brakes kit with slotted and drilled rotors,upper strut brace,lower 2pt brace,3im,power box,m5 eom wheels,m5 rep bumper and skirts.
Model Year: 2007
Ya, definitely sounds like something is leaking, look around the radiator there is a seal that in between the heater hose pipes and core,it's hell to get to, but not impossible
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