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Info re: WJ 4.7 HO engine

3K views 3 replies 4 participants last post by  scjeep4.7HO 
#1 ·
Could someone advise what is the difference between the Knock Sensors and the Detonation Sensor in the HO engine? What do they do or control?

Thanks Trev
 
#2 ·
so the 4.7 ho has both these sensors? Knock and detonation are the same. Knock or detonation is when the air/fuel mixture explodes with spark...but then a secondary explosion happens. It usually occurs when there is unburned fuel present in the chamber.
 
#3 ·
As far as i could find in the WJ service manual there are only 2 knock sensors on the HO engine. I could not find anything regarding detonation sensors.
 
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