2002 mazda millenia p0305 riding rough flashing engine lights. New spark plugs , wires , distributer cap .

https://www.google.com/search?sxsrf=ALeKk01VFr0wDrLUx_ixS3OmYDCES58ofg%3A1584714228350&source=hp&ei=9NF0Xq-cE62IlwTgjbCQAw&q=how+to+fix+code+P0305+on+a+2002+dodge+caravan+3.3+liter+engine+engine+light+on+%2C+running+rough&oq=how+to+fix+code+P0305+on+a+2002+dodge+caravan+3.3+liter+engine+engine+light+on+%2C+running+rough&gs_l=psy-ab.3...1718.1718..2639...0.0..0.257.257.2-1......0....2j1..gws-wiz.zE46-pnWnww&ved=0ahUKEwiv5pjFoKnoAhUtxIUKHeAGDDIQ4dUDCAU&uact=5#kpvalbx=_XtJ0XufFNJGPlwTPyYHIAw36

A broken valve, a bad spark plug wires, or spark plug wires loose.

Make sure car is cold. Use socket wrench and spark plug socket to remove old plugs. Add new plugs, and then put wires back.------------------------------------------------------------------------------------
Multi-Di@g Access

Could be weak spark plug wires or cap and coil. Electricity will jump to ground instead of thru the spark plugs if the wires are wet.

check all spark plug wires and replace. age and wear and tear will cause them to crack and therefore create the misfire in your cylinder causing the engine to run rough

sounds like one of the parts they replaced is bad first thing to do is have it scanned to see what the check engine light is on for then let me know i would say bad wire or plug that was installed and what kind of plugs they put in it

bad cap ????

The flashing light and rough engine means a spark plug(s) misfire. I've had that issue before. The steering could be a few things. The ball joint or wheel bearing might be broken or the axle could be broken. I replaced my wheel bearing (pot hole) and the steering was fine. However, I also had to replace my steering rack prior to that incident.

Drive it into a dark place, or wait till dark. When it's running poorly, see if you can see any spark flying around. It sounds like plug wires.

I've had the same problem with my 1999 Mazda Protege, 1.6L, Automatic.

The problem was a damaged spark plug, resulting in a loss of compression in one of the cylinders.

Solution: replace all spark plugs and make sure wires are in good condition. I recommend NGK Platinum.