I just may have an issue with they blend doors. Not sure till I get a closer look. I was mainly curious where the coolant ends up. I was thinking it would share the Evaporator drain, assuming it wasn't plugged up. Which, I made sure mine wasn't.A sweet smell, or steam out of the hvac vents; would be a common sign of the problem. A pressure test,,is the best way; i have found, to pinpoint hard to find, coolant leaks.
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This is a new thread because it's a new problem. Previous issues were addressed by replacing the water pump and radiator thermal switch.This has been going on for quite awhile; this is a new thread (again), without the whole history of the overheating issue.
Why did you put the blue devil in originally; was there a specific cooling leak, that you were aware of? Did you pressure test the cooling system?
If you are thinking the heater core is leaking, you could bypass it and see if the smell, overheating issue goes away?
Good. video to review:
These all have been done at some point recently:Well, you might review the checks shown in the video; see, if you notice anything, that indicates a problem? I usually, vacuum fill the cooling system and eliminate any possible air in the system, that way.
In a possible process of elimination; did the idle overheating issue, happen before the heater core was bypassed or after it was sealed with bluedevil, hooked back up again? As noted: if the heater core is suspect; you could by pass it again and see if things act differently?
When, you say “over heating “@ idle; how is it acting (boiling, fans kicking on, etc) and what coolant temps are being shown on a scan tool?
So far on the cooling system; what have you replaced or “fixed”:
Water pump
Thermostat
Flush/fill coolant
Sealed leaking heater core
Coolant temp sensor
Fan switch
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Time will tell. I'll just have to keep an eye out on the coolant levels and any additional issues.So, i guess, there was air; in the cooling system? Is the heater core; still steaming, leaking or smelling? I suppose, residual leaked coolant; could cause a sweet coolant smell, inside the car?
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