I have a code P0300 on my 08 Dodge Challenger srt8 and I replaced my spark plugs and coils but after a day the light came back on with the same code P0300, car still drives fine. What could be the problem
Your getting P0300 and no other codes at all ?
I am also getting another code for bad thermostat and coolant temp sensor besides the P0300... I just remembered that code because I thought it was a more serious code
There is no way people can help you if you do not reveal the total problem explained in accurate detail. We can't guess nor not read your mind...
Well if changing stuff out didn't help, I'd recommend conducting a compression/leak-down test on all cylinders. Usually there are other codes associated with a P0300 code since it's detecting a misfire on multiple cylinders. Could be a faulty O2 sensor, but some freeze-frame data would be helpful here...
