We have had to start the car by turning the steering wheel as if it's…
This past Monday on my way to work, my car started bucking and the check engine light started flashing. I checked the code, it was P0301, Cylinder 1 misfire. Since then I have…
First I Changed the Ignition Coil Cylinder 1
Then I Changed the Spark Plug Cylinder 1
Changed the Fuel Injector Cylinder 1
Performed a Compression test Cylinder 1. Passed 185 psi
Visually inspected the wire harness
Visually inspected the vacuum hoses
Swapped the ECU
About 2 months, ago I installed a new fuel pump, fuel filter and pressure regulator.
When I first start the car, it runs fine. While it is still in park, I can rev ’til the cows come home without issue. When I put the car in gear and drive for a few seconds, I get the Flashing CEL and Misfire code(p0301 only) comes back every time. Also, I can feel the car missing, so I know its not an erroneous code. What should I try next?
I would recommend checking for intake manifold gasket leaks. It is a common failure that may cause a misfire problem. I have provided a diagnostic chart to help assist you.
Code P0301 Diagnostic Chart