Overheating and missing

Forgetting all you have done & why

What is or was the main issue & when did it start
& under what conditions ?

Does the thermostat open ?
Does it reach 195 or more coolant temp?
Does it go into Closed Loop? (Oxygen Sensors
in control of fuel)
Any OBD Codes in any system?
Fuel Pressure Correct as well as Volume
& under a load while driving

Sounds like you were going to say it only has a problem
AFTER it reaches operating coolant temp

SO- none of what you did appears to be related

First-- you find & resolve all problems. THEN do your
Preventative Maintenance-spark plugs,filters,etc.

Check or test the switch on the transaxle, that is for gear
selection,whatever you have there

May be the only problem you ever had or one of two problems

Only runs when cold-- in park only?
Won't run hot or cold-- in ANY gear?

Can you even drive it at all?

How about an Idle air control solenoid/valve
on or near the throttle body-got one of them?

ANY HEAD PROBLEM WILL OVER HEAT THE ENGINE IN LESS THAT 2 MIN. MAY BE A SET OF PLUGS AND WIRES CAP AND ROTOR WOULD BE A GOOD START. DONT FOR GET THE FUEL FILTER.

Thanks for choosing FixYa Debra and welcome to FixYa. Chrysler is superior with electrical problems and failures. If it is still overheating, that may be the cause of the missing. Check the coolant level, hoses, and make sure coolant is in the radiator. The most common issue to overheating is a thermostat. This is after you have checked all the hoses and have checked for leaks. You could have internal engine damage from the overheating, such as a warped head or leaking head gasket. If it happened after the overheating, the overheating probably caused the problem. I believe the engine needs to be taken out and looked at. I know it is not what you want to hear, but it makes sense if the noise didn't start until the overheating. Now, it may also be an electrical issue cause Chrysler's are known for it. I would suggest testing the distributor wires/connections, look at the spark plug wires, anything to do with the ignition system.

Check engine light on? Any codes? Missed before and after the cap was changed? Or is the cap new so you assume its good. I have had caps bad out of the box.

check the car computer or control box.sammyc47.

Have you checked the injectors and wiring. sounds like bad injector or wiring not sending pulse from pc.

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.

Try the pick-up coil that is under the distributer cap.Remove the cap and rotor button then remove the plate that is under the rotor button.Next you need to take off the relucter wheel that is in the way so you can take out the bolts and remove the pick-up coil.

You might have computer problems.

Does the check engine light come on when it starts to miss?

a tune up would be the first step; plugs wires and fuel filter. then try a new rotor cap and button. if there still is a problem then check and see what you are getting for fuel pressure.