Cooling fan not working??Will my machine blow?? - Toyota Yaris Forums

2009Toyotoad · 06-29-2015, 12:20 PM

Sounds like a leak it the heater core, but Its strange you aren't getting puddles inside the car on the carpet. Time for a radiator leak down pressure test at the local service station to confirm. They need it overnight. Given the vehicle age, you have two repair options if that's what leaking. Replace the heater core which may be a pricey repair with teardown, or used a sealant added to the radiator. While sealants are a cheap repair option and the bottle usually says its permanent. Once one pressure leak is fixed another made pop up in a few days, so I'd recommend to more expensive replacement option as it saves time and money in the long run.

BTW, I wonder why the coolant sensor isn't signaling low coolant levels. it should also be tested/replaced with a new one.

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06-29-2015, 12:20 PM	#2
2009Toyotoad Drives: 2009 Yaris 3dr Join Date: May 2009 Location: California Posts: 135	Sounds like a leak it the heater core, but Its strange you aren't getting puddles inside the car on the carpet. Time for a radiator leak down pressure test at the local service station to confirm. They need it overnight. Given the vehicle age, you have two repair options if that's what leaking. Replace the heater core which may be a pricey repair with teardown, or used a sealant added to the radiator. While sealants are a cheap repair option and the bottle usually says its permanent. Once one pressure leak is fixed another made pop up in a few days, so I'd recommend to more expensive replacement option as it saves time and money in the long run. BTW, I wonder why the coolant sensor isn't signaling low coolant levels. it should also be tested/replaced with a new one.