Coolant loss
Hello guys, for about 1 and a half - 2 months the car's been loosing coolant, about 0.5 to 1l per week... now my question is, which could be the possible most suspect culprits? I am thinking that it could be the thermostat housing, my thermostat has been stuck on open (thanks God haha) since I bought the car lol (almost 4 years ago), and I haven't bothered fixing it since having it stuck on open would always circulate the water through the radiator and the worst and only thing it can happen is, when driving on the highway, you'll have the water a little colder than normal 80-90°C which isn't really an issue. But the interesting thing is, why would the thermostat housig give up now only, aloooot later than the thermostat itself? Maybe it's not that at all, any ideas?
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My car was losing a small drop of coolant every week, thermostat packed up then temp sensor, constantly checking levels for nearly 2 years. Had cambelt, tensioner and water pump changed now absolutely fine. Obviously a very small leak from water pump no sign of coolant loss!
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Have you checked the actual running temperature using the trip screen diagnostic? TC |
When driving normal, temp gauge is in the middle position. Temp gauge is at about 25% level when driving fast because the air flowing fas in the radiator, so about 80-90°C. Can you please tell me how to check the temp using the trip screen diagnostic? Thanks
And Brunty, I can't really understand what you mean, was your problem the thermostat and temp sensor and now you changed them and it's all right or was it the water pump? Sent from my SM-G950F using Tapatalk |
Describing the temperature gauge needle position by using the clock face will make things clear.
Normal is at 9 0'clock. I guess you mean 6 o'clock in your post. Much too cool.---:eek: |
Nope, it's at 7 and a half - 8 am position. But I am trying to figure out here what are the causes of the leakage guys haha, as said, I drove the car with the thermostat stuck on open for almost 4 years and the fuel avarage is at 8.5 l/100km so that's nit a problem, and I don't think the engine got worn by this because I raaaarely drive at high speeds so the water almost never gets to stay cold. And anyways, if the cause is other than the thermostat housing, I'll have the thermostat and the housing replaced soon with a metal one anyway.
Sent from my SM-G950F using Tapatalk |
Also, how can I flush the system before installing the new thermostat when buying a new one? Right now my thermostat is stuck on open so I guess it will be easier to flush the system now in this condition.
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Changed thermostat and temperature sensor, now running 95-96 degrees. Did not alter the coolant loss. New water pump cured the problem.
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These would be my top 5 on a KV6
Thermostat & pipework Bottom pipes across subframe Oil cooler Water pump Liners at base |
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