I saw this on another forum and found it very interesting:
If the engine gets too hot the rear cylinder will stop fueling and sparking via the ECM...but continues to cycle air through the cylinder to act like an air pump therefore reducing the heat and keeping the engine from blowing up!!
Can someone verify that this is true? If so, it's impressive. I think it is supposed to happen at 300 degrees F. Also, if so, does it work for each cylinder independently or just the rear cylinder? What year was this made available and is it available on all models?