#winter #cold #heating #questions :) - Toyota Yaris Forums

IllusionX · 12-16-2013, 11:49 AM

I'm not sure blocking the radiator does anything, since the thermostat prevents water from flowing when it's not hot enough.

CTScott · 12-16-2013, 12:15 PM

Quote:

Originally Posted by IllusionX

I'm not sure blocking the radiator does anything, since the thermostat prevents water from flowing when it's not hot enough.

Blocking the radiator definitely helps in cold environments. Before the thermostat opens it reduces the cold air flowing over the block to allow the engine to get up to temp quicker. Once it opens the blocking restricts the airflow through the radiator to prevent significant cooling of the coolant.

nookandcrannycar · 12-16-2013, 12:57 PM

I read post #9 and thought 'that's not what my friend found to be true'. My friend has lived much of life in the S.F. Bay Area.....except for, notably, living for 20 years in Great Falls, Montana. The whole time he lived in Montana, he drove full sized pickups from one or another of the Big 3. He usually returned to California for Christmas, and said he often drove through temps a fair bit colder than what has been posted so far on this thread. He said he always blocked his radiator...said he had to do so to make sure he could get at least get out of Montana (and usually for much more of the trip than that). I then read CTScott's post #10...the 'why' behind what my friend found to be true.

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12-16-2013, 11:49 AM	#1
IllusionX It's the illusion you see View User's Garage Drives: 07 Yaris Sedan Aero Join Date: Oct 2006 Location: Brossard, QC Posts: 3,888	I'm not sure blocking the radiator does anything, since the thermostat prevents water from flowing when it's not hot enough.

12-16-2013, 12:57 PM	#3
nookandcrannycar Drives: 2('14+'07)MT 3d ,wHandCrWndws! Join Date: May 2009 Location: S.MontgomeryCnty,TX(HoustonMSA) '07=BayouBlue=300,125miles=OrigOwnr '14=ClassicSilvr=29,059miles Posts: 4,839	I read post #9 and thought 'that's not what my friend found to be true'. My friend has lived much of life in the S.F. Bay Area.....except for, notably, living for 20 years in Great Falls, Montana. The whole time he lived in Montana, he drove full sized pickups from one or another of the Big 3. He usually returned to California for Christmas, and said he often drove through temps a fair bit colder than what has been posted so far on this thread. He said he always blocked his radiator...said he had to do so to make sure he could get at least get out of Montana (and usually for much more of the trip than that). I then read CTScott's post #10...the 'why' behind what my friend found to be true.