Oppo I need your Help

"punkgoose17" (punkgoose17) 01/31/2019 at 10:06 • Filed to: None

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Because of the cold the heater in my car failed? It is not heating. The thermostat goes between normal and high. The car is not leaking or lacking coolant.

Is the thermostat valve broken?

Could it be from not flushing the heater core well enough when I changed the water pump?

I am not sure if there is anything I can do. I may go outside at lunch just to make sure it starts.

Long_Voyager, Now With More Caravanny Goodness > punkgoose17 01/31/2019 at 10:21

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Did the heater actually fail or is it just cold enough that it cannot beat it out?

My van’s always had great heat, but today I’m not sure it ever got above 20 degrees inside.

kanadanmajava1 > punkgoose17 01/31/2019 at 10:40

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With some cars bleeding the system can be very difficult. The nonfunctional heate r can occur if the air is in the system. Did it work at some point with the new water pump?

BrianGriffin thinks “reliable” is just a state of mind > punkgoose17 01/31/2019 at 10:45

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I would lean toward almost definitely heater core related due to the spike in the water temp. Either that or the tstat is frozen. 

RamblinRover Luxury-Yacht > punkgoose17 01/31/2019 at 10:49

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It is possible that you have some less-concentrated coolant in your heater core or line which has frozen, which previously didn’t mix in due to the heater valve being closed. Or something.

punkgoose17 > kanadanmajava1 01/31/2019 at 11:43

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It had been working until yesterday afternoon. The water pump was changed October.

punkgoose17 > RamblinRover Luxury-Yacht 01/31/2019 at 11:45

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That sounds likely. It warmed up to 5 F. Since it is lunch I am going to check if my car will start and warm up.

punkgoose17 > Long_Voyager, Now With More Caravanny Goodness 01/31/2019 at 11:47

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That is what I was thinking yesterday, but since the thermostat goes up and down I think something is more likely frozen or broken.

kanadanmajava1 > punkgoose17 01/31/2019 at 11:50

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The coolant should have mixed by now so flushing shouldn’t be the issue. If the water pump was turning when you started the cold engine the coolant should be in liquid form. Otherwise you could have had belt slipping noises or damaged water pump followed by overheating.

Maybe some temperature regulator valve is mechanically stuck?

Gidges > punkgoose17 01/31/2019 at 14:14

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That sounds like a died thermostat in my eyes. My colleague recently had that issue aswell with his Seat, where his car wouldn’t increase his temperature during driving or it would  go down even.

punkgoose17 > Gidges 01/31/2019 at 14:56

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I think this is the case. I will change it as soon as possible.