Have po301 code 1 cylnder misfire whats the

Dont change things if udont know solution..its just guessin. A flashin enginelite means danger. It often means the catylitic converter is bad. But hav adata stream run at a privateshop to get values to target issue. Codes are jyst approximate n general

Google all the possibles

TYPE: OBD PO303

Chrysler OBD PO 300

AIR & FUEL FILTERS NEED CHANGED, MAP SENSOR CAN BE FAULTY ! PUT SOME FUEL INJECTOR CLEANER IN TANK, THE GOOD STUFF ! DO ALL THIS, SEE HOW IT DOES .

the light flashes when damage to the converter is happening,either by misfire or over rich condition . a misfire will cause the bucking and jumping. a bad injector will over rich the system also have checked with scanner a clogged converter will set the light on.

CODE PO304 - CYLINDER 4 MISFIRE DETECTED. POSSIBLE CAUSE BAD SPARK PLUG .FAULTY OR STOPPED UP FUEL INJECTOR.BAD IGNITION COIL.

CODE PO301 - CYLINDER NUMBER 1 MISFIRE DETECTED. POSSIBLE CAUSE- BAD COIL - SPARK PLUG - INTAKE MANIFOLD VACUUM LEAK - DIRTY OR FAULTY FUEL INJECTOR. CODE P1142 - DID NOT SEE. CODE P1545 - THROTTLE VALVE ACTUATOR MALFUNCTION.POSSIBLE CAUSE THROTTLE VALVE CONTROL MODULE FAULTY - THROTTLE VALVE IS DAMAGE OR DIRTY - THROTTLE VALVE MUST BE IN THE CLOSE POSITION - ACCELERATOR PEDAL OUT OF ADJUSTMENT. THROTTLE POSITION ACTUATOR IS SHORTING TO GROUND OR POWER.

They are still looking for a cause because it isnt misfiring right now or because they cant find the cause of the stored misfire codes ?
If it is misfiring right now and they cant figure it out then perhaps you should find new mechanics !
I have seen a lot of bad coils on the PT.
Misfire is usually caused by spark plug wires first, spark plugs 2nd, and coil third.
If it isnt misfiring now, spray down the wires with water. If it misfires after that replace the spark plug wires and spark plugs and try again.
If it still misfires then the problem will likely be the coil.

Have your plugs and wires checked for replacement:)

Good place to start, but If you check directly with Chrysler there may be a technical service bulletin, that isn't posted yet. Have the codes cleared when work done, and see what happens.