2002 Ford Escape 3.0L V6 150k on it
Ive never had an issue with this thing til yesterday.
Out of nowhere it starts running rough.
I find Cylinders 4 and 6 are dead.
So, I moved coil packs around, no change. I swapped plugs around, no change.
Compression test = pass
I even pulled the coils and watched the plugs fire outside the engine.
Both the upstream and downstream O2 sensors are stuck on .6v at idle for that bank.
The fuel trims are about -15% on both banks.
I am stumped.
Any insight is appreciated.
PS. I washed the engine a few weeks ago and have driven the car around a few times since this happened. I took all connectors apart, cleaned them and re-installed to rule that out. I also wiggled all wiring and the idle never improved.
Ive never had an issue with this thing til yesterday.
Out of nowhere it starts running rough.
I find Cylinders 4 and 6 are dead.
So, I moved coil packs around, no change. I swapped plugs around, no change.
Compression test = pass
I even pulled the coils and watched the plugs fire outside the engine.
Both the upstream and downstream O2 sensors are stuck on .6v at idle for that bank.
The fuel trims are about -15% on both banks.
I am stumped.
Any insight is appreciated.
PS. I washed the engine a few weeks ago and have driven the car around a few times since this happened. I took all connectors apart, cleaned them and re-installed to rule that out. I also wiggled all wiring and the idle never improved.