Engine only warms up to 140

[madmaxx]

Be carefull with the infered guns, if the emmissivity value is off you reading will be off by 30 degrees. I am sure the default value is 1 which is good for a flat black surface. #2 the cheaper one, less than $30K it takes an average of temps, if you are 1 foot away it is probably averaging a 8" diameter circle so put it right up on the component. They are best used to check for realitive change not absolute temp, now get an IR camera looking at thousands of points we are differtn

[patrickt]

Originally Posted by madmaxx

Be carefull with the infered guns, if the emmissivity value is off you reading will be off by 30 degrees. I am sure the default value is 1 which is good for a flat black surface. #2 the cheaper one, less than $30K it takes an average of temps, if you are 1 foot away it is probably averaging a 8" diameter circle so put it right up on the component. They are best used to check for realitive change not absolute temp, now get an IR camera looking at thousands of points we are differtn

Or, you could take shots using your IR gun at a cup full of water and ice, and shots at a pot of boiling water on the stove, and see how close they are to 32 and 212. If you can get, say, a 150 reading from a pot of boiling water (and you're not at the top of a mountain) then it's time for a new tool.

[jhv48]

Originally Posted by madmaxx

Be carefull with the infered guns, if the emmissivity value is off you reading will be off by 30 degrees. I am sure the default value is 1 which is good for a flat black surface. #2 the cheaper one, less than $30K it takes an average of temps, if you are 1 foot away it is probably averaging a 8" diameter circle so put it right up on the component. They are best used to check for realitive change not absolute temp, now get an IR camera looking at thousands of points we are differtn

Say what????

I agree with the guy that said you have a very efficient cooling system and the moving cold air is causing your driving temp to drop so low. To prove it, do what the truckers do in cold weather and block off the radiator opening completely with cardboard.

I just returned from Skiing in Utah and while driving my Jeep at night in 20 degree weather, my temp gauge never got anywhere near normal operating temps. Later in the day when the outside temp warmed up to 70 degrees, the Jeep went back to normal temps.

You're fine. Enjoy the drive!

[WHATBUS]

Dumb question. Does the radiator cool better in dry weather verus humid, if the actual temp is the same?

[patrickt]

Originally Posted by WHATBUS

Dumb question. Does the radiator cool better in dry weather verus humid, if the actual temp is the same?

Not dumb; the answer is the radiator works better in a dry environment of equal temperature. The same with your skin -- you "cool off" easier in a less humid environment even if the temperature is the same.