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12-17-2016, 09:34 PM | #1 |
Drives: 07 yaris hatchback Join Date: Dec 2016
Location: Nahant M.A
Posts: 265
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Termostat won't open??? O7 YARIS H.B
So I randomly grab the bottom radiator hose after 30 minutes commute so was cold so I got a new termostat but is doin the same after goin to Gillette stadium is like 1 hour drive still won't open it got heat and won't overheat ?????
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12-17-2016, 11:40 PM | #2 |
1NZ-6spd
Drives: '05 6-Spd Vitz RS Join Date: Oct 2008
Location: Oshawa, Ontario, Canada
Posts: 2,967
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how cold is it outside?
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12-17-2016, 11:44 PM | #3 |
Drives: 07 yaris hatchback Join Date: Dec 2016
Location: Nahant M.A
Posts: 265
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12-18-2016, 12:09 AM | #4 |
Drives: Yaris T-Sport Join Date: Nov 2016
Location: Finland
Posts: 163
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So 1.6°C ... i assume you have proper amount of glycol in your cooling system .... and if not it still won't freeze on that temperature anyways :/
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12-18-2016, 08:03 AM | #5 |
1NZ-6spd
Drives: '05 6-Spd Vitz RS Join Date: Oct 2008
Location: Oshawa, Ontario, Canada
Posts: 2,967
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Is the upper hose hot?
Coolant returns into the engine down there so it's possible it's been cooled down by the rad to the point of not feeling hot anymore. |
12-18-2016, 09:19 AM | #6 |
Drives: 2010 yaris 3 door hatch Join Date: Jun 2013
Location: Sheboygan Falls, Wi.
Posts: 521
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The top one should be the hot side. One these engines, when the t stat opens, it lets coolant into the engine.
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12-18-2016, 10:05 AM | #7 |
Drives: 2007 2-door hatchback Join Date: Jul 2016
Location: USAnotCA
Posts: 750
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Thermostat heater cooling system temperature gauge.
The cabin heater is also a radiator cooling the system coolant. I would like a temperature gauge. My 1989 Tercel temp needle ran high for awhile. Then, I'm guessing, the thermostat or some blockage unstuck and it ran dead center again. Then the needle ran low and I stuck some cardboard behind the grille. And then got normal again. (Note: approach to non safety-critical items evolved as death-by-rust-inspection approached.)
But this dual-idiot-light-no-gauge approach of Yaris gives no such ability to track trends enough before extremes. Last edited by dogsridewith; 12-18-2016 at 11:57 AM. |
12-18-2016, 11:05 AM | #8 |
Drives: '08 2zr swapped Vios M/T Join Date: Oct 2012
Location: Caledonia Ont.
Posts: 2,938
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What others have stated above. Check the top hose, it has cooled down enough by the time it reaches the bottom hose as well as through your heater core.
I find the 1nz cools very efficiently when outside temps are low
__________________
No one ever wants to give a Yaris the point by... |
12-18-2016, 11:19 AM | #9 |
Drives: Yaris T-Sport Join Date: Nov 2016
Location: Finland
Posts: 163
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And forget to mention ... malfunctioned radiator cap causes that kind of problems !
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12-18-2016, 12:45 PM | #10 |
Drives: 2015 yaris L Join Date: Jun 2016
Location: Indiana
Posts: 77
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If you have drained coolant recently, you may not have gotten all the air out of system?
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12-18-2016, 12:53 PM | #11 |
Drives: 07 yaris hatchback Join Date: Dec 2016
Location: Nahant M.A
Posts: 265
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12-18-2016, 12:57 PM | #12 |
Drives: 07 yaris hatchback Join Date: Dec 2016
Location: Nahant M.A
Posts: 265
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12-18-2016, 12:58 PM | #13 |
Drives: 07 yaris hatchback Join Date: Dec 2016
Location: Nahant M.A
Posts: 265
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12-18-2016, 01:41 PM | #14 |
Drives: 2007 2-door hatchback Join Date: Jul 2016
Location: USAnotCA
Posts: 750
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Is overflow tank at correct level? Do you get illumination of the high temperature indicator lamp?
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12-18-2016, 03:28 PM | #15 |
Drives: 07 yaris hatchback Join Date: Dec 2016
Location: Nahant M.A
Posts: 265
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12-18-2016, 04:42 PM | #16 |
It's the illusion you see
Drives: 07 Yaris Sedan Aero Join Date: Oct 2006
Location: Brossard, QC
Posts: 3,888
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You are saying you are not getting heat inside the cabin?
The heater core could be blocked.... Sent from my SM-G930W8 using Tapatalk |
12-18-2016, 04:49 PM | #17 |
Drives: 07 yaris hatchback Join Date: Dec 2016
Location: Nahant M.A
Posts: 265
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12-19-2016, 08:00 AM | #18 |
Drives: 2007 2-door hatchback Join Date: Jul 2016
Location: USAnotCA
Posts: 750
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lower radiator hose temperature coolant thermostat heat heater
We ALL now need to be curious and check the operating temperature of the fleet's lower radiator hoses...noting, at mimimum, ambient temperature.
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