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It could be a fuel or compression problem that is causing your misfire. To eliminate a clogged injector as a possible cause, you can swap injectors between cylinders and see if the fault follows the injector in question. Or it could be a fouled or incorrectly gapped spark plug causing the misfire. Do a compression check with the engine warm, preferably right after a misfire event.
why not say the code, let us decide what they mean.
P0300 code, in fact post all DTCs not just one if more......!!!
this code means MISFIRE< (that sluggish is that , misfiring)
cause by bad COMBUSTION.
1: bad spark ever to a tuneup? ever?
2: bad compression on the P030x (what is x) cylinder.
3: bad injection to P030x cylinder.
Is the check engine light on? An OBD II code P0300 - Random/Multiple Cylinder Misfire Detected could indicate a bad crank position sensor causing a misfire. Another possibilty would be the coil or distributor cap. The 95 and 96 were notorious for burning distributor caps. My 96 used to burn one once a month which is why Chevrolet stopped using them and went to multiple coils. More information would be helpful in diagnosing the problem
P0304 Code indicates a misfire on cylinder 4
Most likely causes for this are bad wire, bad spark plug, bad coil(s) or bad dist cap if so equiped.
A vacuum leak can also cause a misfire.
Seeing the vehicle is going on 13 years old replacing the wires and the plugs would be a good place to start, and could be the solution
You didn't need a different distributor,just the sensor in it,if it was bad. That now appears questionable.
When it heats up,your ignition module,is breaking down, under load,and your getting a misfire. That would be a possible cause.
Codes don't always indicate a bad part,only the symptom, of the real issue. e.g.(Misfire)
IF YOU GOT GAS ENGINE.PROBLEM COULD BE STOPPED UP FUEL FILTER OR WEAK FUEL PUMP.LOW ENGINE COMPRESSION.BAD SPARK PLUG + WIRES + ROTOR AND CAP ALSO BAD COIL CAUSING WEAK SPARK.IF YOU HAVE DIESEL ENGINE SLUGGISH.PROBLEM COULD BE RESTRICTED AIR FILTER DIESEL.INJECTION PUMP TIMING OUT OF ADJUSTMENT.FAULTY EGR AND EPR VALVES.RESTRICTED EXHAUST SYSTEM STOPPED UP MUFFLER PLUGGED FUEL FILTER.PLUGGED FUEL TANK DUE TO FAULTY FUEL CAP.MISSING PROBLEM COULD BE CAUSED BY DIRTY OR FAULTY INJECTORS. THE INJECTION PUMP TIMING OFF. AIR IN FUEL.OR FUEL RETURN SYSTEM RESTRICTED.STOPPED UP FUEL FILTER.OR USING INCORRECT FUEL OR ITS CONTAMINATED.
First off there is no distributer cap or button. There are three individual coils. Instead of a distributer it is computer controlled ignition(spark).
Your service engine light should be on above your gas gage on your dash. You need to have the computer scanned for trouble codes. There are many components that may be causing the problem. Even if one of the 2 o2 sensors is bad there is probably something else causing problem.
Check the inside of your distributer cap, moisture will cause major problems. Start your jimmy and run water over and around your distributer, after awhile turn it off remove the cap and feel the inside for moisture...it might not be sealing right.
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