Hi All,
Long time browser, first time poster here. The assistance provided on this website in previous topics has been invaluable when working on my 2013 F-150 or on this latest project.
Just a quick background, I just picked up a 2013 Police Interceptor Sedan, 3.5 Ecoboost. It is a run-out Highway Patrol unit with 129K on it. It was sold at auction with a "dead cylinder, bad engine". Upon closer inspection and speaking to the fleet manager, it turned out to be a stuck open #6 fuel injector causing the issue. Due to the vehicle being over-mileage, they chose not to fix the injector and sent it to auction. They performed a compression test on all cylinders which was within spec prior to auction. From what I have been told, the car started acting up and pouring smoke/fuel out the back. It was parked at the shop and hadn't been run at all.
This is where I come in. When I picked up the car from auction, the battery was dead and was winched onto the trailer. I took apart the intake and replaced the #6 injector. While I was in there, I cleaned the other 5 injectors, drained/replaced the coolant, the oil/filter and installed new Iridium spark plugs, gapped properly. After reassembling everything and putting in a fresh battery, the car started right up. It sounded great and came up to temperature fine. I checked the codes that were in the system, which were:
P006C - Turbo Inlet Pressure Correlation
P0151 - First O2 Sensor Bank 2 Low Voltage
P0306 - Cylinder 6 Misfire Detected
P0316 - Engine Misfire Detected on Startup
P0354 - #4 Ignition Coil D Primary Circuit Fault
P0356 - #6 Ignition Coil F Primary Circuit Fault
P2610 - PCM Internal Engine off Timer
B11D9 - Battery
U3003 - Battery Voltage
U0212 - Steering Wheel Control Module Power Loss
C0051 - Steering Wheel Position Sensor Subfault
U3003 - Battery Voltage
I cleared all the above codes and took the car for a short drive around the block. Warmed it up to temperature, a few mild accelerations; highest speed was approximately 60 mph. The car ran smooth the entire time and I didn't notice anything out of the ordinary. Whole trip was about 2 miles. No smoke, no odd sounds or smells.
This afternoon after fixing a few other small things on the car, I took it for another drive. This time, I took it for about a 8 mile drive. A few more mild to wide-open accelerations; no cutting out or other problems during acceleration. When I got to a stop light, I noticed that it was "chugging". The idle had suddenly gotten rough and the RPM's were varying. When I got home, I put it in park and noticed that the idle was still rough, sounded like it was "chugging". When standing outside the car, I could smell that rotten egg smell, like from a bad catalytic converter. No C.E.L., but I plugged in and got these codes:
P0300 - Random Misfire Detected
P0301 - Cylinder 1 Misfire Detected
P0302 - Cylinder 2 Misfire Detected
I went out again this evening and started it up cold; it's still idling rough. No C.E.L. though.
I'm at a loss trying to figure out where to go next. Knowing that the car was driven with a stuck open fuel injector, could it have taken out the oxygen sensors or catalytic converters? I've read about the knock sensor wiring chaffing, possibly fuel injector problems, but has anyone experienced this or know what direction I should go?
Thanks so much.
Matt