Is this Normal !? 2010 1.8L engine

[iucu]

My Front Intake Manifold is ...ice, cold. After a half houre of driving, is still cold. I remember one time, when I changed the oil, i checked and was hot but since that time, I checked daily and is cold.

[star_deceiver]

It sucks cold air at this time of year, so yes, cold is relativly normal!

[djkeev]

You've touched upon a topic that was a problem back in the day of carburetors and is still a major topic in the air plane world.It isn't so much about temperature as it is how air and humidity interact when subjected to a venturi and air speed effect.For example, you can test this yourself.....Hold your hand about 4 inches from your mouth and open your mouth real wide and breathe on your hand. Warm air, right? Now pucker yer lips like you are going to whistle and blow hard. Cool air, right? Add some high humidity on a 30-50 deg day and see what happens with air rapidly moving though a pipe.Do some research, it's a fascinating topic, like I said you'll probably find a lot of information in relationship to air craft. Carb icing at 5000 feet tends to be a very BAD thing!Dave

[iucu]

But like I said, one time I checked was hot (I mean hot) and now every day is cold.

[Sublimewind]

Quote, originally posted by iucu »But like I said, one time I checked was hot (I mean hot) and now every day is cold.When you changed your oil, had you been driving prior? Most likely because it was hot... Whell, when you are under way, the air passing through the intake keeps it cool, once you stop the flow, it acts as a large "heat sink" pulling heat out of the motor... hence being hot..