P0300 code what is the fix?

Question

My accent has 93000 on it and suddenly start shaking engine at idle and at 40MPH, The only code is showing P0300. I changed all spark plug and used gas treatment and so far drive about 40 miles since treatment , no help yet engine still vibrate and I can feel low power on engine.

Answer 1

Hi there,

This code can be caused by several things. If the timing is off, a plugged converter, low fuel pressure. Intake manifold leak and a bad mass air flow sensor can do the same. You will have to check each item one at a time to try and locate the problem. Very common issue on these is a plugged converter and that will drop the power.