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  #16  
Old 01-25-2012, 12:13 AM
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Quote:
Originally Posted by cessna5354 View Post
Sokoloff,

At what mileage did you replace the Tstat & housing? Did it fail, or did you replace in preventative manner ?

Mine must not be original, as I have no writing on top side of housing.
I replaced it at around 140,000 miles. It did not fail, but I thought it was running a little too cool, maybe 160. So I changed it and the temps went up a few degrees, maybe to 165. Both were 80 thermostats. So the old OE thermostat probably was still okay.
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  #17  
Old 02-17-2012, 04:31 AM
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Join Date: Sep 2006
Location: Lancaster, CA
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Quote:
Originally Posted by cessna5354 View Post
Sokoloff,

At what mileage did you replace the Tstat & housing? Did it fail, or did you replace in preventative manner ?

Mine must not be original, as I have no writing on top side of housing.
I replaced mine in the 206k mile range. I really can't complain given how long it lasted.


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  #18  
Old 02-17-2012, 01:13 PM
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Replaced mine at 140,088 miles with a Behr. Still had the original housing so replaced that too.

Now the Behr is quick to heat to the first thermostat mark 60C but takes some 6 or 7 minutes to get to 80C but will maintain 80C in sub 0 weather. Will replace with a Wahler. I understand both brands have an excellent reputation.

I think I may have cooked it when the temperature went 3/4 of the way to the 100C mark while on cruise with the air blasting going up a 15 mile grade on Interstate 15. It was advised to turn off air conditioning at the base of the hill.

I have always had the belief that you could reach 100C before and damage was done and that a thermostat or engine and it would fail open at 120C. I suspect that I have a partial fail resulting in a fast opening. New Wahler thermostat ordered now if it would only warm up outside.
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