I recently got a code saying P0303 which I know is a misfire in cylinder 3 I changed the ignition coil I changed all coils 2000km ago it may have been faulty so I swapped it out. Now the car since the check engine light has been on it’s hard to start the car and idles rough, since changing the coil the engine is now saying (P0300) random misfire/multiple. The emergency light comes on saying reduce speed or go up a gear (auto) same time the thermostat reading when to about 3/4. I first assumed it was the fuel pump sensor since the car idles rough and won’t start straight away.
Has anyone experienced this and or can give any advice.
