A PO300 is random cylinder misfire. If It was a PO301 that would mean that number one cylinder misfire. With out checking the car I would only be guessing. The most likely would be plugs and wires.
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.
battery on a 1999 dodge intrepidYou may have to remove the front driver side wheel to gain access to the battery compartment. At least that's where it is on the 1998 Dodge Startus. hope this helps.
P0300 = random misfire. Could be as simple as needing a tune up.
P0030 - HO2S heater control circuit (bank 1 , sensor 1) P0300 - Random/ multiple cylinder misfire detetected
I received these error codes for my 1998 Dodge Avenger, 6cyl. 2.5 What does these codes mean? Where would I start to fix these issues? ~THANK YOU ~ P0108 P1297 P0401
21 is for the oxygen sensor reading staying at center.
Trouble code P0420 means: Catalyst Efficiency Below Normal (Bank 1)
In the 1998 Intrepid ES, 1684 indicates a problem with the catalytic converter. It probably is the same for the 2000.
No. A 1998 Dodge does not have a reset button or kill switch.
A 1998 Dodge Ram does not have EGR.
How do i Recharge AC Unit for a 1998 Dodge Stratus
All 1998 Dodge Dakota's have a timing chain and not a belt.
A 1998 Dodge Neon uses green antifreeze.