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Ok, well I not sure where to go with this issue. As I was driving into work the truck was downshifting on every little rise in the road with cruise on. With cruise off it still would just not as soon. On one of the bigger hills with the cruise off into developed a miss. It is a head scratcher, I had my Torque app running, so I was checking my parameters and nothing stuck out as different. I was able to do the KOEO test after I got to work and everything passed, and I have no DTCs. Not sure where to look next so I am hoping someone hear can help out. One more thing I did use about 10% more fuEl this morning.
Here’s a normal check list for you to go through , could or could not be but you never know,
Oem fuel and oil filters , not aftermarket
Oem oil filter cap , not aftermarket
water separator drain at the Hfcm , it will drain out about a 11/2 cups of fuel , I use a mason jar to look for water and what ever else comes out.
sensors cleaned up in the Intake like , Map, EBP, iat2 , please ware safety glasses when spraying carb cleaner and don’t get the electrical side of the sensor , on the Map the threaded nipple in the intake is small make sure you clear that and look for cracks / splits in the Map hose.
If you still have the Egr Valve clean that too.watch getting cleaner in the two holes on the bottom side of the valve , wrap a rag around it.
Maff , use only Maff cleaner
Now we get into Hpop Lpop, injection , watch ICP and Ipr on your gauge ,look for oil on the back side of the ICP sensor and connection , with engine running do a pinch and wire wiggle test at the ICP grey clip , it’s been known to short out at the end , all else pull the Ipr and inspect the screen.
monitor Vgt , engine warm ,idle nothing at 85 , Wot (wide open throttle ) nothing at 15, if your seeing these numbers , it might be time for a Turbo cleaning. Very rarely it’s the vgt sensor.you can also pull the cold side pipe off and check the wheel for play or if it’s rubbing .
check all CAC boots for splits , they get oily and brittle over time , loosing Boost under pressure .
If you need the ford Pids on any of these let me know , they are scattered in the 6.0 pages but I haven’t seen them in awhile .
Last edited by 04badford; Oct 22, 2018 at 06:21 PM.
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