Help Cold air during idle
#1
Registered Member
Thread Starter
Cold air during idle
I have a 2012 Infiniti G37x, and I've noticed something odd while using the heat in my car. While the vehicle is running at operating temperatures and the heat is set at 32 degrees Celsius (89.6 Fahrenheit) with the fans at max what I'm noticing is when I am stopped and idling at a red light or something, the air coming out of the vents begin to cool. So I did the first thing, and Google'd around, and the first thing that popped up is that there is air in the cooling system. So I go and buy some 50/50 pre-mixed fluid and begin burping my system. I thought I solved the problem and this morning, the air coming out of the vents is still coming out cold.
Am I missing something? Bad thermostat or water pump? Did I not burp all the air out of the system? I might try burping the system again and leave my car on ramps for the night to see if that helps.
Anyways. I'd love to know if anyone else has had similar experiences.
Am I missing something? Bad thermostat or water pump? Did I not burp all the air out of the system? I might try burping the system again and leave my car on ramps for the night to see if that helps.
Anyways. I'd love to know if anyone else has had similar experiences.
#4
Registered Member
Thread Starter
Warm air does come out if the fan speed is the slowest to middle speed. When it's max, I noticed how quickly it drops.
The outside air shouldn't cool the heater core that fast?
EDIT: I'm going to try to burp the system again and if that doesn't resolve the issue, I'll replace the thermostat when it's warmer outside, if that's not it, maybe my heater core needs to get flushed. I'm hoping it's not my water pump because that would suck
#5
Just say no!!!!!
iTrader: (14)
The outside air shouldn't cool the heater core that fast?
I don't recall what mine does as I rarely have the fan on max speed. It's on a slower setting while the car warms up, then low to med as I don't like baking in the car.
I really don't think you have an issue. Wait for some more responses from folks who duplicated your test conditions and have similar outside air temp.
Set it to recirculate then repeat your test.
#6
Registered Member
Thread Starter
I'd say it's pretty cold where you're at. If the system is set to pull in refresh air (not recirculate), then the system has to warm up that really cold air. Heater core is nothing more than a mini radiator. Warm air is achieved by blowing air through the hot fins. If it's blowing too fast and outside air temp is very cold, it may not be warming the air up fast enough.
I don't recall what mine does as I rarely have the fan on max speed. It's on a slower setting while the car warms up, then low to med as I don't like baking in the car.
I really don't think you have an issue. Wait for some more responses from folks who duplicated your test conditions and have similar outside air temp.
Set it to recirculate then repeat your test.
I don't recall what mine does as I rarely have the fan on max speed. It's on a slower setting while the car warms up, then low to med as I don't like baking in the car.
I really don't think you have an issue. Wait for some more responses from folks who duplicated your test conditions and have similar outside air temp.
Set it to recirculate then repeat your test.
I'll keep an eye on it, but at the rate in which the temperature was decreasing while idle or stopped just makes me wonder if my cooling system is operating efficiently.
I opened up my rad cap prior to driving and it was pretty full, so there shouldn't be a loss in fluid.
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