P0300 Diagnostic Code - Random Misfire
Symptoms.
Engine may stumble or miss
Engine may be hard to start
you may notice no issues
Cause
Failing spark plugs or spark plug wires
Bad coil or coil pack
Failing oxygen sensor(s)
Bad fuel injector or more than one
Stuck exhaust valve
Bad catalytic converter
EGR valve or valve passage clogging
Bad camshaft position sensor
Bad PCM or ECM
The Fix
Best first action is a tune up, new plugs, wires, inspect all hoses and wire connections then reset the code. If it returns you will need to narrow it down to a system, coils and coil packs should be tested, catalytic converters for function ( do you smell rotten eggs?). A misfire that jumps cylinders could indicate a lean condition, do you have any other codes along with the 300? this will help clue you in to the source, check valve function to make sure they are opening and closing fully.
This is probably pone of the most difficult codes to troubleshoot, so start with the basics and work your way into the more expensive options, in many cases a good old tune up solves the problem, back it up with a fuel system cleaning and see where you stand.
The 2005 Ford Taurus has 12 valves.
The 2005 Ford Taurus has a V6 engine.
2005 ford taurus serpentine belt diagram
The 2005 Ford Taurus is a gas-powered vehicle.
The 2005 Ford Taurus has overhead valves (OHV).
The 2005 Ford Taurus has a 4-speed automatic.
How many catalytic converter are on a 2005 Ford Taurus
The curb weight of the 2005 Ford Taurus is 3306 lbs..
The height of the 2005 Ford Taurus is 4 ft. 8.1 in. (56.1 in.).
The 2005 Ford Taurus runs on regular unleaded.
The 2005 Ford Taurus is 16 ft. 5.6 in. (197.6 in.) long.
Ford Taurus X was created in 2005.