Hi my friend, i would like to thank you all the support and tips that you share with me regarding my Missfire piston 7 problem.
I have to ask you again about a specifi test that I'm going to do today, so read carefully the test procedure that i wan to do:
1rst question:
is TRUE that the PCM send a GROUND SIGNAL to eahc engine coil during normal operation?...i mean, each coil have a permanent 12 volt feeds from the computer, then in the RIGHT time, the PCM send a ground signal for each coil in order to close the circuit, generate the high voltage arch and consecuently. the spark that blows the fuel into the cylinder....i need to know if this is really true!!.
2nd question.
Since it is a fact that a pair of cylinders works together (paired) that means PCM send TWO (2) ground signal simultaneously by different ways (2 cables) to both cylinders, these paired signal are sincronized and occurs exactly the same time?
3rd. question.
if PCM fails sending the ground signal to cylinder 7, and producing a Misfire on it..can i take the ground signal from the other 100% ok cylinder cable (the paired cylinder) and connects both cylinder together, using the "good signal" that comes from the PCM? and ignoring the bad ground signal cable that comes from PCM?
4th question.
a friend of mine that works with mechanical, says me that the paired cylinder in the explorer 2008 XLT V8 4.3L 3 valves is:
1 paired with 6
2 paired with 8
3 paired with 5
4 paired with 7
can you confirm this please?
thanks you again buddy.