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Mystery coolant leak

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Old 08-23-13, 12:18 PM
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Mystery coolant leak

Over the past 6 months I have been driving my car and about every 1.5 months the coolant gets just low enough to trigger the coolant buzzer on a hill. There is no visible leaks, and no signs of exhaust in the coolant.

The problem has not gotten any worse and the engine seems to be very healthy.

Any thoughts / opinions? been stumped for months on this...
Old 08-23-13, 12:40 PM
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Originally Posted by island-fc
Over the past 6 months I have been driving my car and about every 1.5 months the coolant gets just low enough to trigger the coolant buzzer on a hill. There is no visible leaks, and no signs of exhaust in the coolant.

The problem has not gotten any worse and the engine seems to be very healthy.

Any thoughts / opinions? been stumped for months on this...
Bad coolant seals? Anything coming out of the exhaust?
Old 08-23-13, 01:55 PM
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it could be a number of things, best way to check is a cooling system pressure test. you should be able to pump the cooling system to 15-20psi, and it should basically hold that overnight.

if it doesn't hold pressure you have a leak, the water pump and turbo banjo bolts are tricky to see on these cars.

if it does hold pressure, its possible the cap is bad, or that its running a little hot
Old 08-23-13, 03:22 PM
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are yo sure it is the coolant buzzer?
I am asking this as the low oil level buzzer is also on that circuit,so if you are on a hill the oil sensor may be triggering the buzzer.
Old 08-23-13, 04:05 PM
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Originally Posted by misterstyx69
are yo sure it is the coolant buzzer?
I am asking this as the low oil level buzzer is also on that circuit,so if you are on a hill the oil sensor may be triggering the buzzer.
Coolant light comes on with the buzzer, I also top it up after it happens and end up repeating a month and a half down the road. My car does not leak oil and I have disabled my omp.
Old 08-23-13, 04:46 PM
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Originally Posted by island-fc
Coolant light comes on with the buzzer, I also top it up after it happens and end up repeating a month and a half down the road. My car does not leak oil and I have disabled my omp. and now i add premix oil with my fuel at every fill up.
fixed. i hope.
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