Another cooling question 7.3 idi
More Turbo
Joined: Oct 2009
Posts: 596
Likes: 58
From: West Plains, MO
Sorry, but that theory is baloney. It violates at least two laws of thermodynamics. But it is a persistent urban legend among mechanics both professional and amateur.
There are a VERY few engines in which removing the stat causes problems, but they are "double-ended" where the stat covers up a large bypass passage when it opens. I had a Mercedes diesel with that type.
Most likely the reason your Ranger overheated is that you had a failure elsewhere in the cooling system (plugged radiator, broken water pump impeller, blown head gasket, etc.) and even with the removed stat passage wide-open there wasn't enough cooling available.
There are a VERY few engines in which removing the stat causes problems, but they are "double-ended" where the stat covers up a large bypass passage when it opens. I had a Mercedes diesel with that type.
Most likely the reason your Ranger overheated is that you had a failure elsewhere in the cooling system (plugged radiator, broken water pump impeller, blown head gasket, etc.) and even with the removed stat passage wide-open there wasn't enough cooling available.
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