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I was hoping to get some help and advice about my 2010 Ford Taurus Limited AWD 3.5L car. The other week it began running rough; wobbling in park and worse in reverse and then shuddering when going over 40 mph. The check engine light came on and I took it to Autozone to use a diagnostic reader. I got P0302 Cylinder 2 Misfire detected and P0202 Injector Circuit Open Cylinder 2 on the readout.
Naturally, I replaced all of the spark plugs and ignition coils. I also replaced the battery because it was four years old. It ran fine for maybe 20 miles and the check engine light came back on and it began shuddering again. I ran another diagnostic and got only P0202 Injector Circuit Open Cylinder 2 as the readout. So I replaced the fuel injector I believe is #2 (bottom left on engine when facing it) as per a firing order diagram I found online (Autozone couldn't locate a diagram for me) and I replaced the fuel injector wiring connector (pigtail) for the injector as well. I hooked up the battery and about 20 miles later I'm having the same problem with shuddering and the check engine light back on.
Does anyone have any idea what the problem could be? I can't afford a mechanic currently and would rather fix the problem myself if at all possible This is my only vehicle for work and the kids. Any help or advice would be so greatly appreciated! Thank you!
Naturally, I replaced all of the spark plugs and ignition coils. I also replaced the battery because it was four years old. It ran fine for maybe 20 miles and the check engine light came back on and it began shuddering again. I ran another diagnostic and got only P0202 Injector Circuit Open Cylinder 2 as the readout. So I replaced the fuel injector I believe is #2 (bottom left on engine when facing it) as per a firing order diagram I found online (Autozone couldn't locate a diagram for me) and I replaced the fuel injector wiring connector (pigtail) for the injector as well. I hooked up the battery and about 20 miles later I'm having the same problem with shuddering and the check engine light back on.
Does anyone have any idea what the problem could be? I can't afford a mechanic currently and would rather fix the problem myself if at all possible This is my only vehicle for work and the kids. Any help or advice would be so greatly appreciated! Thank you!