Hello,
(f150 2007- 4.6l- RWD)
Yesterday I had to go pick up things 40km away, Truck was idling very rough almost as it wanted to stop.
Then when i would accelerate.. engine would shake back and forth.. also when going uphill it would start shaking again...
and going downhill or taking foot off the paddle would stop shaking.
When I arrived almost to destination, on one empty road, I accelerated and rev up to 3000RPM for a long stretch.

Well on my way back truck was so normal as nothing ever happened. No shaking no rough idling...

Few days ago, I opened and cleaned up throttle body. but I drove few days after that.

Thank you

 

You need torque pro . It will tell you by cyl the raw computer counts per cyl building towards setting a misfire code . this is going to happen again .

 

I order this one today.



It show whole bunch of fancy information.

 

So on the scanner under "on-board monitoring test"

2 things are red.
-----------------------------------------------
1-EGR monitoring BANK 2#32

-32.768(min) -0.578(value) -32.659(max) kPa(unit)
--------------------------------------------
2- Misfire monitor Data#A1
0(min) 2.22(value) 1(max) %(unit)
--------------------------------------------------------------

Then there is cylinder data in % and counts.. I am only putting count here.


EWMA ->misfire-------------------------------> cylinder 2#A3
0(min) 25(value) 65535(max) -----> this value when to 19 when I scanned at night. I wonder if it went all the way to max--65535) and then 19
Misfare counts for last/current driving -->misfire cylinder 2#A3
0(min) 0(value) 65535(max)
------------------------------------------------------------------------------------------
EWMA ->misfire-------------------------------> cylinder 6#A7
0(min) 0(value) 65535(max)
Misfare counts for last/current driving -->misfire cylinder 6#A7
0(min) 2(value) 65535(max)------------------------------------------------------------> this when to zero when I scanned at night

---------------------------------------------------------------------------------------------------------

Every other reading on cylinder is Zero.

Funny thing is few weeks ago I had bad spark-plug #3, there is no data about that... I guess there is no historical data stored.
Also one time 6 months ago... mechanic screwed up on board computer BCM or PCM, I think he had to replace it and had reprogrammed it.