Car shuts of suddenly while driving. Starts back up after 20 minutes.

CHECK OIL LEVEL, SOUNDS LIKE A ROD KNOCK, CATASTROPHIC FAILURE

Tune up, coils.Any codes?

150 miles at least also check ur air filter change nice clean one

The car has to go through a certain number of driving cycles (start, drive, shut down) after the computer has been reset or the battery disconnected for an extended period of time before it will be ready, sometimes 50 or more depending on the vehicle. You could drive 1,000 miles and it wouldn't make a difference. Take your car on multiple short trips, around 15-20 minutes each, letting it sit for a while in between. Just starting and shutting down the car won't count either.

Since you've handled the usual suspects, I'd suspect the coil and/or power transistor in the distributor.

try the feul pump relay

Check the automatic transmission fluid (with the engine idling on a flat surface). I suspect it may be low.

I had this problem once with a Jeep Wagoneer Limited. The combustion principle is most simple. You have fuel and you have spark. Since you are getting emission failures because of unburned fuel, I would start with the spark.

Most modern cars don't use points anylonger, but an electronic computer circuit to generate the spark. These can be very temperature sensitive. In my case, whenever the car would get warm, it quite and left me stranded, 20 minutes later, it would cool enough and run again as if nothing had happened.

I would try locating the spark amplifier under the hood and get a replacement. This is likely to solve the problem.


Hope this has helped.


Regards,


Doug