If check engine is on while driving but not flashing the computer of the car is sending out a code you probably have an emission problem count the flashes this will give you a code. a short pause between the flashes is the second or third, forth, etc of the code. after a long pause it will either repeat the code or give u another.
If the check engine light is flashing when the engine is running , that indicates that an ignition misfire has been detected
The engine computer is also the ignition module.
If the check engine light is flashing every second or so with the engine running that means an engine cylinder misfire has been detected
The ignition switch relay on a 1982 Chrysler New York with a 318 engine is behind the steering column. It is on the inner fender panel.
A flashing check engine light is an indication of a severe engine misfire.
When the check engine light is flashing , it means that an ignition misfire has been detected
Have vehicle scanned to determine the problem Severe misfire
Its not your engine. Its the fan running to cool the engine down. They all do it and nothing is wrong with your car.
If it started flashing after the water pump, it is possible that the timing belt/chain is installed improperly.
there is a problem with your ignition coil or wires
If the check engine light is flashing with the engine running , that means a spark plug misfire has been detected
I think your problem is either in high voltage cables or in the ignition coils. Since you have two ignition coils for 4 cylinders and missfire in one, the problem is in the cables.