Chrysler Repair: not starting, chrysler new yorker, engine controller

Question
My question is..I have a 1994 chrysler new yorker the problem is when i drive the car for a certain amount of time during the day and i shut it off when i go to start the car back up it dose't start up i have to wait for the car to cool down can you tell me what is causeing that please so i can have it change right away..thanks..please reply..

Answer
Hi Mark,
I suspect that it is one of the solid state detectors used to time the spark which is overheating after you shut it down due to less air passing over it when the car is in motion. The best way to be sure is to read the memory of the engine controller for any fault codes that may be stored which would tell us if I'm correct and which one it is.
Reading out the engine controller memory for fault codes is the first step. Try using the ignition key: turn it "on-off-on-off-on" and leave it "on" (doing this quickly, no longer than 5 seconds). By "on" I mean just the normal position when the engine is running, not the cranking position. The 'check engine'light will remain on when you leave the key in the "on" position with the engine still not running. But then watch the 'check engine' light to begin flashing, then pause, flashing, pause, etc. Count the number of flashes before each pause and keep track of the numbers. Repeat the readout and verify the counts are correct. Then group them in pairs in the order that they came out, thus forming two digit numbers. You may notice that the pause is shorter between the digits of a given number, and longer between the numbers themselves. Then send me a 'follow-up' question telling me the results of your readout. By the way, 55 will be the last number (two groups of 5 flashes each) and that is the code for "end of readout".
I have the troubleshooting manual for several engines (so tell me which engine is in you car) and we can look up the possibilities of what is wrong based upon what fault codes you show. There is also an essay on fault codes at the site:
http://www.allpar.com/fix/codes.html
which gives the meaning of the code numbers. But then you need to get specific info for what exactly might be the diagnostic tests or parts to replace to complete the repair. Let me know the codes and I can give you some direction. If there are no fault codes then the problem could be a spark issue.
When the engine won't start, try putting an old spark plug in one of the caps that is normally plugged into the top of a spark plug of your engine, and hold rubber cap but position the threads of the plug on the cylinder head while an accomplice tries to start the engine.  Don't crank it for more than 5 seconds. If you get spark for 5 seconds then that is o.k. and we will have to look further. If you get spark for 1-2 seconds or not at all, that is relevant to know.
So write back with the results of the code readout and the spark test.
Roland