Ok guys, i've got a few questions.
I'll start with the easy one first. Why do the balance rates go to zero once vehicle speed is registered?
Next, and for the real question... LB7 has an intermittent rough idle, so I logged the balance rates, cylinder #1 is holding a pretty constant 5.75 to 6, so #1 i am pretty confident it's bad, but it does that even with a smooth or rough idle. Here's the catch, when the idle does go rough nearly 4 other injectors start to go outside of "Spec".
It's random when the idle acts up, part load and full throttle the truck runs perfect.
Could this be a ficm harness problem????
Any ideas? Truck has roughly 50,000 miles on it.
I'll start with the easy one first. Why do the balance rates go to zero once vehicle speed is registered?
Next, and for the real question... LB7 has an intermittent rough idle, so I logged the balance rates, cylinder #1 is holding a pretty constant 5.75 to 6, so #1 i am pretty confident it's bad, but it does that even with a smooth or rough idle. Here's the catch, when the idle does go rough nearly 4 other injectors start to go outside of "Spec".
It's random when the idle acts up, part load and full throttle the truck runs perfect.
Could this be a ficm harness problem????
Any ideas? Truck has roughly 50,000 miles on it.
