I have a 06 impala was workin fine. Killed it in town an it wouldn't start. I got it running replacing relays but it's horrible. Havein po300 random missfire. Makes a rumble knock sound. Oil is ok
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p0300 means random misfire, and the engine light flashes because there is a problem with to much fuel, that can damage your catalytic converter, due to damage injectors, or map problem
No relay involved , could be the driver door master switch . But i see more broken wire's inside the flex boot from the body to the driver door . All the power window switches get power from driver master switch . Look for a broken tan (B+ ) supply or black ground wire . Without testing ,this would be just a guess . Take hold of the boot an wiggle .
The neutral safety switch,or range sensor is mounted on the transmission at the shift linkage area.replacing it will require theshift lever to be removed
I would start with your coolant fans. If they arent working your car will over heat and most of the time go unnoticed until after you've replaced the water pump, the thermostat, the belts, the fluid etc. Start by checking your main fuse box under the hood and your fan relay/ relays for necessary replacement of burned out ones.
po300 random misfire it needs a tune up..plugs and wires, air and fuel filter........po452 fuel pressure sensor or the fuel level sensor..The fuel pressure sensor is located on top of the fuel pump module.Hope this help...pls rate
Have a video of how it's running but I can't post it
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