0
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.
What else can I help you with?
Where is the paint color for 1997 Buick Le Sabre?
red
What is the fault code P0336 on a 1997 Buick lesabre?
The P0336 fault code on 1997 Buick Lesabre is a fault in the crankshaft position sensor circuit.
Where is oxygen sensor located on 1997 Buick la Sabre?
In the exhaust pipe
What amp is the fuse for the cigarette lighter on a 1997 Buick le Sabre?
10
How do you remove power steering pulley without removing power steering pump from your 1997 Buick Le Sabre?
It is not possible to remove the power steering pulley on a 1997 Buick Le Sabre without removing the power steering pump.
What sensor is in the plastic intake manifold on a 1997 Buick le Sabre 3.8l?
That should be the Oxygen Sensor
Does a 1997 Buick Le Sabre have a timing chain or a timing belt?
The 3.8L engine has a timing chain.
What is the size of the fuel tank in a 1997 buick La Sabre?
18 Gallons About $54.00 or 18 gallons
Where is the cam sensor location on a 1997 Buick Le Sabre?
On front cover of engine, slightly above crankshaft pulley.
How do you replace an F-rod trunk on a 1997 Buick Le Sabre?
remove the old one... install the new one... this ain't rocket science
Where is the oil pressure sending unit on 1997 Buick le Sabre?
The oil pressure sending unit on a 1997 Buick LeSabre is located on the bottom side of the engine, near the oil filter. It monitors oil pressure to ensure that the pump is working properly.
How much will the labor cost to install an engine in a 1997 Buick la Sabre?
Dont pay more than $900 to get it installed. its not a very difficult engine to swap.
